News｜Chiba Laboratory｜Deformation Processing, Institute for Materials Research, Tohoku University

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News2021.11.11.
Our paper "Spreading behavior of Ti‒48Al‒2Cr‒2Nb powders in powder bed fusion additive manufacturing process: experimental and discrete element method study" has been accepted in Additive Manufacturing.
News2021.11.10.
Our paper "Synergetic strengthening in HfMoNbTaTi refractory high-entropy alloy via disordered nanoscale phase and semicoherent refractory particle" has been accepted in Materials & Design.
News2021.11.9.
Seven presentaions at JSPM Autumn meeting.
News2021.11.9.
Our paper "Adhesion mechanism of cold-sprayed Sn coatings on the carbon fiber reinforced plastics" has been accepted in Applied Surface Science.
News2021.11.5.
Prof. Chiba gave an invited talk at ICMaSS2021.
News2021.11.4.
Our paper "Significant lattice-distortion effect on compressive deformation in Mo-added CoCrFeNi-based high-entropy alloys" has been accepted in Materials Science and Engineering A.
News2021.11.4.
Dr. Yamanaka gave an oral presentation at the Japan Titanium Society.
News2021.11.1.
The contents have been updated.
News2021.10.29.
Our paper "Superior hardness–corrosion-resistance combination in a Co-, Cu-modified Ni–Cr–Mo alloy via multiple nanoscale segregation mechanisms" has been accepted in Scripta Materialia.
News2021.10.28.
Prof. Chiba gave an invited presentation at 2021 JAPAN-TAIWAN Advanced Materials and Semiconductor Technology Workshop.
News2021.4.25.
Our paper "Calculation-driven design of off-equiatomic high-entropy alloys with enhanced solid-solution strengthening" has been accepted in Materials Science and Engineering A.
News2021.4.13.
Our paper "Thermal effects in Sn coating on a carbon fiber-reinforced plastic by cold spraying" has been accepted in Journal of Thermal Spray Technology.
News2021.3.17−19.
18 presentations at the JIM Annual Meeting. Prof. Chiba gave a keynote presentation at the Additive Manufacturing symposium.
News2021.3.15−17.
Assoc. Prof. Yamanaka gave 2 oral presentations at TMS2021.
News2021.3.1.
Publication list has been updated.
News2021.3.1.
Assoc. Prof. Yamanaka and Mr. Oda gave oral presentations at ICOTOM19.
News2020.3.1.
Assoc. Prof. Kenta Yamanaka and Shogo Oda gave oral presentations at ICOTOM19.
News2020.11.30.
Haruko Numata gave a poster presentaiton at the LIM project Workshop.
News2020.11.30.
Our paper "Thermal properties of powder beds in energy absorption and heat transfer during additive manufacturing with electron beam" has been accepted in Powder Technology.
News2020.11.26.
Assist. Prof. Huakang Bian, Jiayu Sun, and Haruko Numata gave poster presentaitons at the IMR annual workshop.
News2020.11.14.
Prof. Chiba and Assoc. Prof. Yamanaka gave a keynote lecture and an oral presentation at the JSPT annual meeting.
News2020.11.4.
Assoc. Prof. Yamanaka gave an oral presentation at MS&T 2020.
News2020.10.20.
Our paper "Quantifying the dislocation structures of additively manufactured Ti−6Al−4V alloys using X-ray diffraction line profile analysis" has been accepted in Additive Manufacturing.
News2020.10.15.
Our paper "Centrifugal granulation behavior in metallic powder fabrication by plasma rotating electrode process" has been accepted in Scientific Reports.
News2020.10.5−7.
Prof. Chiba, Dr. Aoyagi, Dr. Bian, and Dr. Zhao attended the EBAM2020 virtual conference.
News2020.10.2.
Our paper "Spinodal Decomposition in Plastically Deformed Fe-Cr-Co Magnet Alloy" has been accepted in Tetsu-to-Hagané.
News2020.9.30.
Prof. Chiba gave an invited lecture at the JSTP seminar.
News2020.9.27.
Our paper "Elucidating the Effect of Preheating Temperature on Melt Pool Morphology Variation in Inconel 718 Laser Powder Bed Fusion via Simulation and Experiment" has been accepted in Additive Manufacturing.
News2020.9.15−17.
We gave 11 oral presentations at the JIM Fall meeting.
News2020.9.14.
Prof. Chiba gave an invited presentation at the JSME meeting.
News2020.8.14.
Our paper "Role of operating and environmental conditions in determining molten pool dynamics during electron beam melting and selective laser melting" has been accepted in Additive Manufacturing.
News2020.8.11.
Our paper "Corrosion mechanism of an equimolar AlCoCrFeNi high-entropy alloy additively manufactured by electron beam melting" has been published in npj Materials Degradation.
News2020.8.9.
Our paper "Effects of plasma rotating electrode process parameters on the particle size distribution and microstructure of Ti-6Al-4V alloy powder" has been accepted in Powder Technology.
News2020.7.20.
Our paper "Manufacturing of a nanosized TiB strengthened Ti-based alloy via electron beam powder bed fusion" has been accepted in Additive Manufacturing.
News2020.7.3.
Associate Professor Kenta Yamanaka was awarded the Harada Young Research Award from The Honda Memorial Foundation.
News2020.6.16.
Our paper "A study on wettability and formation of intermetallic phase between Co–Cr–Mo alloy and Sn-Solder used as a potential under bump metallization for flip-chip packages" has been accepted in Intermetallics. This is a collaborative work with Ms. Tin Tin Kyaw (now staying at IMR as a COLABS program) and Dr. Phacharaphon Tunthawiroon from King Mongkut's Institute of Technology Ladkrabang, Thailand.
News2020.5.22.
Our paper "Hot deformation characteristics and dynamic recrystallization mechanisms of a Co–Ni-based superalloy" has been accepted in Materialia.
News2020.5.14.
Our paper "Preparation of high-strength Co–Cr–Mo alloy rods via hot-caliber rolling" has been accepted in Materialia. This is a collabolative work with INSA Lyon.
News2020.5.10.
Our paper "Influence of interatomic interactions on the mechanical properties of face-centered cubic multicomponent Co–Ni–Cr–Mo alloys" has been accepted in Materialia.
News2020.5.7.
Our paper "Low Young’s Modulus and High Strength Obtained in Ti-Nb-Zr-Cr Alloys by Optimizing Zr Content" has been published in Journal of Materials Engineering and Performance. This is a collaborative paper with Professor Niinomi.
News2020.4.30.
The website has been updated.
News2020.4.27.
Our paper "Process optimization and mechanical property investigation of non-weldable superalloy Alloy713ELC manufactured with selective electron beam melting" has been accepted in Materials Science and Engineering A.
News2020.4.19.
Our paper "Significance of powder feedstock characteristics in defect suppression of additively manufactured Inconel 718" has been accepted in Additive Manufacturing.
News2019.4.11.
A paper "The influence of temperature during water-quench rapid heat treatment on the microstructure, mechanical properties and biocompatibility of Ti-6Al-4V ELI alloy" has been accepted in Journal of the Mechanical Behavior of Biomedical Materials.
News2020.4.7.
Professer Chiba was awarded the Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology. Congratulations!
News2019.3.2.
A paper "Abnormal grain growth in commercially pure titanium during additive manufacturing with electron beam melting" has been accepted in Materialia.
News2018.12.3.
A paper "Effect of multipass thermomechanical processing on the corrosion behaviour of biomedical Co−Cr−Mo alloys" has been published in Corrosion Science.
News2018.12.3.
A paper "Molten pool behavior and effect of fluid flow on solidification conditions in of a biomedical Co−Cr−Mo alloy" has been published in Additive Manufacturing.
News2018.11.19.
A review paper "Current Status of Metal Additive Manufacturing and Microstructure Control of Metal Parts in Powder Bed Fusion (PBF)" has been published in Journal of Smart Processing.
News2018.10.30.
A paper "Tuning strain-induced γ-to-ε martensitic transformation of biomedical Co–Cr–Mo alloys by introducing parent phase lattice defects" has been accepted in Journal of the Mechanical Behavior of Biomedical Materials.
News2018.10.29.
A paper "Electron beam melting of boron-modified Ti-2Al-2Sn-4Zr-2Mo-0.1Si alloy with superior tensile strength and oxidation resistance at elevated temperatures" has been accepted in Materialia.
News2018.9.19.
A paper "A constitutive model and processing maps describing the high-temperature deformation behavior of Ti-17 alloy in the β-phase field" has been accepted in Advanced Engineering Materials.
News2018.9.13.
A paper "Nitinol powders generate from Plasma Rotation Electrode Process provide clean powder for biomedical devices used with suitable size, spheroid surface and pure composition" has been pubblished in Scientific Reports.
News2018.8.14.
A paper "Electron beam additive manufacturing of Inconel 718 alloy rods: Impact of build direction on microstructure and high-temperature tensile properties" has been accepted in Additive Manufacturing.
News2018.6.16.
A paper "Impact of minor alloying with C and Si on the precipitation behavior and mechanical properties of N-doped Co–Cr alloy dental castings" has been accepted in Materials Science and Engineering C.
News2018.6.10.
A paper "Mechanical and Corrosion Properties of AlCoCrFeNi High-Entropy Alloy Fabricated with Selective Electron Beam Melting" has been accepted in Additive Manufacturing.
News2018.6.4.
Our webpage has been updated.
News2017.11.3.
A paper "Fatigue improvement of electron beam melting-fabricated biomedical Co–Cr–Mo alloy by accessible heat treatment" has been publishhed in Materials Research Letters.
News2017.10.10.
A paper "Effect of nitrogen on the microstructure and mechanical properties of Co–33Cr–9W alloys prepared by dental casting" has been accepted for publication in Journal of the Mechanical Behavior of Biomedical Materials.
News2017.10.1.
A paper "High-stiffness and strength porous maraging steel via topology optimization and selective laser melting" has been accepted for publication in Additive Manufacturing.
News2017.9.27.
A paper "Forging property, processing map, and mesoscale microstructural evolution modeling of a Ti-17 alloy with a lamellar (α+β) starting microstructure" has been accepted for publication in Science and Technology of Advanced Materials (STAM).
News2017.9.20.
A paper "Damping capacity of pre-compressed magnesium alloys after annealing" has been accepted for publication in Materials Science and Engineering A.
News2017.9.7.
A paper "Stacking-fault strengthening of biomedical Co–Cr–Mo alloy via multipass thermomechanical processing" has been published in Scientific Reports.
News2017.8.11.
A paper "Regulating twin boundary mobility by annealing in magnesium and its alloys" has been accepted for publication in International Journal of Plasticity.
News2016.11.5.
A paper "CoCrFeNiTi-based high-entropy alloy with superior tensile strength and corrosion resistance achieved by a combination of additive manufacturing using selective electron beam melting and solution treatment" has been accepted for publication in Materials Letters.
News2016.10.18.
A paper "Effects of post-processing on cyclic fatigue response of a titanium alloy additively manufactured by electron beam melting" has been accepted for publication in Materials Science and Engineering A.
News2016.10.9.
A paper "Discontinuous yielding and microstructural evolution of Ti-40 at.% Al alloy compressed in single α-hcp phase region" has been accepted for publication in Journal of Alloys and Compounds.
News2016.10.3.
A paper "Porous metal produced by selective laser melting with effective isotropic thermal conductivity close to the Hashin–Shtrikman bound" has been accepted for publication in International Journal of Heat and Mass Transfer.
News2016.9..
A paper "Impact of solute elements on detwinning in magnesium and its alloys" has been accepted for publication in International Journal of Plasticity.
News2016.9.1.
A paper "Precipitation behavior of a novel cobalt-based superalloy subjected to prior plastic deformations" has been accepted for publication in Materials & Design.
News2016.7.8.
A paper "Development of microstructure and mechanical properties during annealing of a cold-swaged Co-Cr-Mo alloy rod" has been accepted for publication in Journal of the Mechanical Behavior of Biomedical Materials.
News2016.6.24.
A paper "Effect of Building Position on Phase Distribution in Co-Cr-Mo Alloy Additive Manufactured by Electron-Beam Melting" has been accepted for publication in Materials Transactions.
News2016.6.2.
A paper "Cellular Lattices of Biomedical Co-Cr-Mo-Alloy Fabricated by Electron Beam Melting with the Aid of Shape Optimization" has been accepted for publication in Additive Manufacturing.
News2016.3.
A paper "Characterisation of nanoscale carbide precipitation in as-cast Co−Cr−W-based dental alloys" has been featured as a 2016 Journal of Materials Chemistry B Hot Paper.
News2016.2.18.
A paper "Submicron lamellar porous structure formed by selective dissolution of Ti-Al alloy" has been accepted for publication in Materials & Design.
News2016.2.1.
A paper "Characterisation of nanoscale carbide precipitation in as-cast Co−Cr−W-based dental alloys" has been accepted for publication in Journal of Materials Chemistry B.
News2016.1.6.
A paper "Relationship between the microstructure and mechanical properties of an equiatomic AlCoCrFeNi high-entropy alloy fabricated by selective electron beam melting" has been accepted for publication in Materials Science and Engineering A.
News2016.1.4.
A paper "Quantitative in vivo biocompatibility of new ultralow-nickel cobalt–chromium–molybdenum alloys" has been accepted for publication in Journal of Orthopeadic Research.
News2016.1.4.
A paper "Uneven damage on head and liner contact surfaces of a retrieved Co-Cr-based metal-on-metal hip joint bearing: an important reason for the high failure rate" has been accepted for publication in Materials Science and Engineering C.
News2015.12.23.
A paper "Manufacturing of high-strength Ni-free Co−Cr−Mo alloy rods via cold swaging" has been accepted for publication in Journal of the Mechanical Behavior of Biomedical Materials.
News2015.12.8.
A paper "Developing high strength and ductility in biomedical Co–Cr cast alloys by simultaneous doping with nitrogen and carbon" has been accepted for publication in Acta Biomaterialia.
News2015.12.1.
A paper "Preventing high-temperature oxidation of Co–Cr-based dental alloys by boron doping" has been accepted for publication in Journal of Materials Chemistry B.
News2015.12.1.
A paper "Modeling dynamic recrystallization of L-605 cobalt superalloy" has been accepted for publication in Materials Science and Engineering A.
News2015.10.29.
Invited talk: "Microstructure and Mechanical Properties Evolution of Biomedical Co-Cr-Mo Alloys Produced by Electron Beam Additive Manufacturing" by Prof. Chiba.
News2015.10.24.
A paper "Cold-rolling behavior of biomedical Ni-free Co−Cr−Mo alloys: Role of strain-induced martensite and its intersecting phenomena" has been accepted for publication in Journal of the Mechamical Behavior of Biomedical Materials.
News2015.10.21.
A paper "Effect of building position on phase distribution in Co-Cr-Mo alloy additive manufactured by EBM" has been accepted for publication in Journal of the Japan Society of Powder and Powder Metallurgy (in Japanese).
News2015.10.19.
A paper "Superthermostability of Nanoscale TiC-reinforced Copper Alloys Manufactured by a Two-step Ball-milling Processg" has been accepted for publication in Philosophical Magazine.
News2015.10.6.
A paper "In-situ Fabrication and Characterization of Ultrafine Structured Cu-TiC Composites with High Strength and High Conductivity by Mechanical Milling" has been accepted for publication in Journal of Alloys and Compounds.
News2015.9.29.
A paper "Preparation of weak-textured commercially pure titanium by electron beam melting" has been accepted for publication in Additive Manufacturing.
News2015.9.15.
A paper "Strengthening of biomedical Ni-free Co–Cr–Mo alloy by multipass "low-strain-per-pass" thermomechanical processing" has been accepted for publication in Acta Biomaterialia.
News2015.8.28.
A paper "Regulating the coarsening of the γ' phase in superalloys" has been published in NPG Asia Materials.
News2015.8.5.
A paper "Influences of alloyed Si on the corrosion resistance of Co-Cr-Mo alloy to molten Al by iso-thermal oxidation in air" has been accepted for publication in Corrosion Science.
News2015.7.1.
A paper "Influence of Mo Concentration on Corrosion Resistance to HF acid solution of Ni-Co-Cr-Mo Alloys with and without Cu" has been accepted for publication in Corrosion Science.
News2015.6.28
A paper "Texture evolution and mechanical anisotropy of biomedical hot-rolled Co–Cr–Mo alloy" has been accepted for publication in Journal of the Mechanical Behavior of Biomedical Materials.
News2015.6.19
A paper "Assessment of precipitation behavior in dental castings of a Co–Cr–Mo alloy" has been accepted for publication in Journal of the Mechanical Behavior of Biomedical Materials.
News2015.6.11
A paper "First demonstration of promising selective electron beam melting method for utilizing high-entropy alloys as engineering materials" has been accepted for publication in Materials Letters.
News2015.5.19
Professor Chiba gave a presentation entitiled "Mechanical and biological response of biomedical Co-Cr-Mo alloy produced by additive manufacturing using electron beam melting (EBM)" at University of Gothenburg, Sweden.
News2015.5.18
A paper "Effects of carbon on microstructure, mechanical properties and metal ion release of Ni-free Co–Cr–Mo alloys containing nitrogen" has been accepted for publication in Materials Science and Engineering C.
News2015.5.14
A paper "Control of γ lamella precipitation in Ti-39 at.% Al single crystals by nanogroove-induced dislocation bands" has been accepted for publication in Acta Materialia.
News2015.5.12
A paper "Regulating the Passive Film of NiCoCrMo Alloy in Hydrofluoric Acid Solution by Small Addition of Cu" has been accepted for publication in Corrosion Science.
News2015.5.8
A paper "Analysis of Run-in-Stage Wear Behavior and Contact Mechanics of Metal-on-Metal Hip Joint Bearings with Different Radial Clearances" has been accepted for publication in Materials Transactions.
News2015.4.16
A paper "Mechanisms of lamellar structure formation and Cr interfacial segregation in C11b-MoSi2/C40-NbSi2 dual phase silicide verified by a phase-field simulation incorporating elastic inhomogeneity" has been accepted for publication in Computational Materials Science.
News2015.3.10
A paper "Analysis of the fracture mechanism of Ti-6Al-4V alloy rods that failed clinically after spinal instrumentation surgery" has been accepted for publication in Spine.
News2015.2.20
A paper "Effects of alloyed Si on the oxidation behaviour of Co-29Cr-6Mo alloy for solid-state fuel cell interconnects" has been accepted for publication in Corrosion Science.
News2015.2.17
A paper "Surface characterisation of Ni-free Co-Cr-W-based dental alloys exposed to high temperatures and effects of adding silicon" has been accepted for publication in Corrosion Science.
News2015.2.7
A paper "Low amount of Zr in electron beam melted CCM implants improves osseointegration" has been accepted for publication in Additive Manufacturing.
News2015.1.7
A paper "Enhanced damping capacity of magnesium alloys by tensile twin boundaries" has been accepted for publication in Scripta Materialia.
News2014.12.14
The review article "Effects of Carbon Addition on Mechanical Properties and Microstructures of Ni-Free Co–Cr–W-Based Dental Alloys" has been published in Interface Oral Health Science 2014 (book), edited by Tohoku University Graduate School of Dentistry.
News2014.11.17
A paper "Nano-lamellar/nano-tubular hierarchical porous structure produced by selective dissolution and anodization of lamellar Ti-40 at.% Al alloy" has been accepted for publication in Materials Letters.
News2014.11.5
A paper "Phase and grain size inhomogeneity and their influences on creep behavior of Co-Cr-Mo alloy additive manufactured by electron-beam melting (EBM)" has been accepted for publication in Acta Materialia.
News2014.10.5
A paper "Ex-situ Observation on the Dissolution Behavior of Ni-16Cr-15Mo and Ni-30Co-16Cr-15Mo Alloys in Aqueous Hydrofluoric Acid Solution" has been accepted for publication in Corrosion Science.
News2014.9.3
A paper "Effects of Cold Working on Corrosion Resistance of Co-Modified Ni-16Cr-15Mo Alloy in Hydrofluoric Acid Solution" has been accepted for publication in Corrosion Science.
News2014.8.20
A paper "Role of strain-induced martensitic transformation in the formation of extrusion and intrusion during fatigue deformation of biomedical Co-Cr-Mo-N alloys" has been accepted for publication in Acta Materialia.
News2014.8.8
A paper "Influence of two-step ball-milling condition on electrical and mechanical properties of TiC-dispersion-strengthened Cu alloys" has been accepted for publication in Materials & Design.
News2014.8.7
A paper "Corrosion Resistance of Cu- and Fe-modified Ni-30Co-16Cr-15Mo Alloy in Aqueous Hydrofluoric Acid" has been accepted for publication in Corrosion Science.
News2014.7.28
A paper "Thermo-mechanical fatigue test of a wrought Co-based alloy as potential tooling material for die casting" has been accepted for publication in Materials Science and Engineering A.
News2014.7.25
A paper "Effects of microstructures on the sliding behavior of hot-pressed CoCrMo alloys" has been accepted for publication in Wear.
News2014.5.28
A paper "Influence of carbon addition on mechanical properties and microstructures of Ni-free Co-28Cr-9W-1Si-C alloys subjected to thermomechanical processing" has been accepted for publication in Journal of the Mechanical Behavior of Biomedical Materials.
News2014.5.27
A paper "Mechanisms of Cr segregation to C11b/C40 lamellar interface in (Mo,Nb)Si2 duplex silicide: a phase-field study to bridge experimental and first-principles investigations" has been accepted for publication in Intermetallics.
News2014.5.26
A paper "Collective behavior of strain-induced martensitic transformation (SIMT) in biomedical Co-Cr-Mo-N alloy polycrystal: an ex-situ electron backscattering diffraction study" has been accepted for publication in Materials Science and Engineering A.
News2014.5.23
A paper "Effect of cold rolling on phase decomposition in biomedical Co-29Cr-6Mo-0.2N alloy during isothermal heat treatment at 1073 K" has been accepted for publication in Journal of Alloys and Compounds.
News2014.5.19
A paper "Nanoplastic deformation on Ti-39 at.% Al single crystals for manipulation of every single gamma lamella" has been accepted for publication in Acta Materialia.
News2014.4.30
A paper "Detwining in Mg alloy with a high density of twin boundaries" has been accepted for publication in Science and Technology of Advanced Materials.
News2014.4.13
A paper "Cu-Ti-C Alloy with High Strength and High Electrical Conductivity prepared by Two-step Ball-milling Processes" has been accepted for publication in Materials and Design.
News2014.3.22
A paper "Effects of carbon concentration on microstructure and mechanical properties of as-cast nickel-free Co-28Cr-9W-based dental alloys" has been accepted for publication in Materials Science and Engineering C.
News2014.3.21
Professor Chiba won the Materials Distinguished Contribution Award from the Japan institute of Metals.
News2014.3.21
Professor Koizumi won the Materials Meritorious Award from the Japan institute of Metals.
News2014.3.19
A paper "Effects of Al, Ti, and Zr doping on oxide film formation in Co–29Cr–6Mo alloy used as mould material for Al die-castingy" has been accepted for publication in Corrosion Science.
News2014.3.4
A paper "Hot Forging Behaviour and its Effects on Oxidation Behavior of W-Cr alloy" has been accepted for publication in Corrosion Science.
News2014.2.16-20
Yamazaki, Wei and Yamanaka attended the TMS 2014 held in San Diego, USA.
News2014.2.11
A paper "Surface nitriding of a Co–Cr–Mo alloy in nitrogen" has been accepted for publication in Materials Chemistry and Physics.
News2014.1.27
A paper "Corrosion behabior of CoCrMo alloys in 2 wt% sulfuric acid solution" has been accepted for publication in Electrochimica Acta.
News2014.1.12
Juan, doctorial student in INSA-Lyon, France, has started his stay in Chiba Lab.
News2013.12.29
A paper "Effects of nitrogen on microstructural evolution of biomedical Co-Cr-W alloys during hot deformation and subsequent cooling" has been accepted for publication in Materials and Design.
News2013.12.16
A paper "Local strain evolution due to athermal γ → ε martensitic transformation in biomedical Co-Cr-Mo alloys" has been accepted for publication in Journal of the Mechanical Behavior of Biomedical Materials.
News2013.12.13
A paper "Phase decomposition in biomedical Co-29Cr-6Mo-0.2N alloy during isothermal heat treatment at 1073 K" has been accepted for publication in Journal of Alloys and Compounds.
News2013.12.12
A paper "Effects of Sigma Phase and Carbide on the Wear Behavior of Biomedical CoCrMo Alloys in Hanks' Solution" has been accepted for publication in Wear.
News2013.12.1
Mr. Kii joined our group.
News2013.10.1
Our website has been revamped!
News2013.10.1
Assistant Professor Hiroaki Matsumoto moved to Kagawa University as an Associate Professor.
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