MAYAMA Tsuyoshi

J-GLOBAL         Last updated: Apr 16, 2019 at 19:07
 
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Name
MAYAMA Tsuyoshi
Affiliation
Kumamoto University
Section
Unregistered
Job title
Associate Professor

Research Interests

 
 

Research Areas

 
 

Academic & Professional Experience

 
Apr 2017
 - 
Today
Associate Professor, Kumamoto University
 
Apr 2012
 - 
Mar 2017
Associate Professor, Kumamoto University
 
Feb 2008
 - 
Mar 2012
Research Associate, Kumamoto University
 
2008
 - 
2012
 Others,
 
2012
   
 
 Associate Professor,Priority Organization for Innovation and Excellence ,Kumamoto University
 

Education

 
 
 - 
2001
Graduate School, Division of Engineering, Hokkaido University
 
 
 - 
1999
Mechanical Engineering, Faculty of Engineering, Hokkaido University
 

Published Papers

 
Mayama Tsuyoshi, Tane Masakazu, Tadano Yuichi
ACTA MATERIALIA   165 62-72   Feb 2019   [Refereed]
Kawano Yoshiki, Ohashi Tetsuya, Mayama Tsuyoshi, Kondou Ryoji
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES   146 475-485   Oct 2018   [Refereed]
Kishi Daichi, Mayama Tsuyoshi, Mine Yoji, Takashima Kazuki
SCRIPTA MATERIALIA   142 1-5   Jan 2018   [Refereed]
Yoshiki KAWANO, Tetsuya OHASHI, Tsuyoshi MAYAMA, Masaki TANAKA, Morihiro SAKAMOTO, Yelm OKUYAMA, Michihiro SATO
Transactions of the JSME   84(860) ROMBUNNO.17‐00559(J‐STAGE)   Jan 2018   [Refereed]
Mine Yoji, Maezono Ryo, Mayama Tsuyoshi, Wu Jing, Chiu Yu Lung, Bowen Paul, Takashima Kazuki
JOURNAL OF ALLOYS AND COMPOUNDS   718 433-442   Sep 2017   [Refereed]
Shinya Ogata, Tsuyoshi Mayama, Yoji Mine, Kazuki Takashima
Materials Science and Engineering A   689 353-365   Mar 2017   [Refereed]
© 2017 Elsevier B.V.The influence of microstructural evolution on the strain hardening and non-uniform deformation behaviour of pre-strained ferrite-martensite DP steel was studied using a crystal plasticity finite element method (CPFEM). The mate...
Yoshiki Kawano, Tsuyoshi Mayama, Ryoji Kondou, Tetsuya Ohashi
Key Engineering Materials   725 KEM 183-188   Jan 2017   [Refereed]
© 2017 Trans Tech Publications, Switzerland.In this paper, we investigated changes in active slip systems of α-phase of Ti-6Al-4V alloy under a cyclic plastic loading using a crystal plasticity finite element method. In the analyses, a bicrystal m...
Masakazu Tane, Keisuke Yamori, Tohru Sekino, Tsuyoshi Mayama
Acta Materialia   122 236-251   Jan 2017   [Refereed]
© 2016 Acta Materialia Inc.A micromechanics-based method (“inverse self-consistent approximation”) that can extract all the independent elastic constants of single crystals from those of polycrystals with crystallographic texture was newly develop...
Nishida Masahiro, Ishida Kaito, Kodama Fumiya, Hayashi Koichi, Akahoshi Yasuhiro, Hokamoto Kazuyuki, Mayama Tsuyoshi, Yamasaki Michiaki, Kawamura Yoshihito
PLASTICITY AND IMPACT MECHANICS   173 65-72   2017   [Refereed]
Fukuda Kazutaka, Koyanagi Yuta, Tsushida Masayuki, Kitahara Hiromoto, Mayama Tsuyoshi, Ando Shinji
MATERIALS TRANSACTIONS   58(4) 587-591   2017   [Refereed]
Kwangsik Kwak, Tsuyoshi Mayama, Yoji Mine, Kazuki Takashima
Materials Science and Engineering A   674 116   Sep 2016   [Refereed]
© 2016 Elsevier B.V.Microtensile testing with a crystal plasticity analysis was employed using single block structured specimens to elucidate the anisotropic plasticity of lath martensite steel. Habit-plane-orientation-dependent yielding occurred ...
Kazuma Shiraishi, Tsuyoshi Mayama, Tsuyoshi Mayama, Michiaki Yamasaki, Michiaki Yamasaki, Yoshihito Kawamura
Materials Science and Engineering A   672 58   Aug 2016   [Refereed]
© 2016 Elsevier B.V.The strain-hardening behavior and microstructural development of polycrystalline as-cast Mg-Zn-Y alloys with various volume fractions of the long-period stacking ordered (LPSO) phase subjected to cyclic loading were experimenta...
Koji Hagihara, Tsuyoshi Mayama, Masahito Honnami, Michiaki Yamasaki, Hitoshi Izuno, Takuya Okamoto, Tetsuya Ohashi, Takayoshi Nakano, Yoshihito Kawamura
International Journal of Plasticity   77 191   Feb 2016   [Refereed]
© 2015 Elsevier Ltd. All rights reserved.Variations in deformation kink band formation behavior with loading orientation were examined by the combination of experiment and computer simulation, using the Zn single crystal as a model material. Based...
Kwangsik Kwak, Tsuyoshi Mayama, Yoji Mine, Kazuki Takashima
ISIJ International   56(12) 2319   Jan 2016   [Refereed]
© 2016 ISIJ.Micro-tensile testing and numerical analysis using a crystal plasticity finite element method (CPFEM) were employed to elucidate the deformation behaviour of bainite/martensite structures of a low-alloy steel. The bainite single-phase ...
Kazutaka Fukuda, Yuta Koyoanagi, Masayuki Tsushida, Hiromoto Kitahara, Tsuyoshi Mayama, Shinji Ando
Journal of Japan Institute of Metals and Materials   80(5) 334-339   Jan 2016   [Refereed]
© 2016 The Japan Institute of Metals and Materials.With a hexagonal close packed structure, magnesium has many slip systems. Pure shear tests were carried out to evaluate their critical resolved shear stresses (CRSS). As a result, the CRSS for the...
S. Morita, S. Fujiwara, T. Hori, N. Hattori, H. Somekawa, T. Mayama
Frattura ed Integrita Strutturale   10(35) 82-87   Jan 2016   [Refereed]
© 2016, Gruppo Italiano Frattura. All rights reserved.This paper deals with the fatigue crack propagation behavior of rolled AZ31B magnesium alloy (grain size: approximately 40 µm). Fatigue crack propagation tests were performed on single edge not...
Kwangsik Kwak, Tsuyoshi Mayama, Yoji Mine, Kazuki Takashima
Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan   102(6) 304-310   Jan 2016   [Refereed]
Micro-tensile testing combined with analysis using a crystal plasticity finite element method (CPFEM) was employed to elucidate the deformation behaviour of bainite/martensite structures of a low alloy steel. The bainite single phase specimens exh...
M. Tane, H. Kimizuka, K. Hagihara, S. Suzuki, T. Mayama, T. Sekino, Y. Nagai
Acta Materialia   96 170-188   Jun 2015   [Refereed]
© 2015 Acta Materialia Inc.The effects of stacking sequence and short-range ordering of solute atoms on the elastic properties of Mg-Zn-Y alloy single crystals with an 18R- or 10H-type long-period stacking ordered (LPSO) structure were studied. In...
M. Tane, T. Mayama, A. Oda, H. Nakajima, H. Nakajima
Acta Materialia   84 80-94   Feb 2015   [Refereed]
© 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.The tensile and compressive deformation in porous Mg with unidirectionally oriented cylindrical pores and a unique fiber texture in which the normal direction of the {1 0 1...
Tsuyoshi Mayama, Tetsuya Ohashi, Yuichi Tadano, Koji Hagihara
Materials Transactions   56 963-972   Jan 2015
© 2015 The Japan Institute of Metals and Materials.The mechanism and the effective factors for the development of intragranular misorientations due to kinking is studied by a crystal plasticity finite element method. A single crystal with hexagona...
Kazuma Shiraishi, Tsuyoshi Mayama, Michiaki Yamasaki, Yoshihito Kawamurad
Materials Science Forum   816 481-485   Jan 2015   [Refereed]
© (2015) Trans Tech Publications, Switzerland.Influence of long period stacking ordered (LPSO) phase on non-uniform deformation in polycrystalline as-cast Mg-Zn-Y alloys was investigated by using a crystal plasticity finite element method. Materia...
Hiromoto Kitahara, Tsuyoshi Mayama, Keita Okumura, Yuichi Tadano, Masayuki Tsushida, Shinji Ando
Acta Materialia   78 290-300   Oct 2014   [Refereed]
A spherical indenter was impressed on low index planes in pure Mg single crystals and the resulting deformation structures such as slip bands and twins around and beneath each indentation were investigated. Indentations on (11̄00) and (112̄0) show...
Takayuki Hama, Tsuyoshi Mayama, Hirohiko Takuda
Key Engineering Materials   611/612 Pt.1 27-32   Jan 2014   [Refereed]
In the present study, the deformation behavior of a cast Mg alloy sheet that had random crystallographic orientations was studied both experimentally and numerically. Although the crystallographic orientations were random, the stress-strain curve ...
Ryo Matsumoto, Masaaki Otsu, Michiaki Yamasaki, Tsuyoshi Mayama, Hiroshi Utsunomiya, Yoshihito Kawamura
Materials Science and Engineering A   548 75-82   Jun 2012   [Refereed]
To establish forging process for high strength Mg-Zn-Y alloys with a long period stacking ordered (LPSO) structure, the flow stresses of Mg-Zn-Y alloys with different volume fractions of LPSO phase were measured by the upsettability test. Since mi...
Hidekazu Minami, Hiroshi Ikeda, Tatsuya Morikawa, Kenji Higashida, Tsuyoshi Mayama, Yuki Toji, Kohei Hasegawa
Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan   98 303-310   Jun 2012   [Refereed]
The aspect of inhomogeneous deformation in a dual-phase steel has been quantitatively visualized by a new method using high-precision grid-marker which was lithographed on the specimen surface by electron beam. This method enables imaging of plast...
Tsuyoshi Mayama, Masafumi Noda, Ryoichi Chiba, Mitsutoshi Kuroda
International Journal of Plasticity   27(12) 1916-1935   Dec 2011   [Refereed]
The texture development mechanism during the extrusion of magnesium alloy is investigated by experimental observation and numerical analysis. First, we perform a finite element analysis of a full extrusion process using a phenomenological constitu...
Tsuyoshi Mayama, Tetsuya Ohashi, Kenji Higashida, Yoshihito Kawamura
Magnesium Technology   273-277   Jan 2011   [Refereed]
The compressive loading behavior of single crystals and bicrystals of magnesium without consideration of deformation twinning has been investigated by crystal plasticity finite element analysis with the aim of fundamental understanding of kink ban...
Tsuyoshi Mayama, Tetsuya Ohashi, Kenji Higashida
Materials Science Forum   654/656(Pt.1) 695-698   Aug 2010   [Refereed]
Crystal plasticity finite element analysis method considering the accumulation of geometrically necessary (GN) dislocations was applied to monotonic loading of pure magnesium bi-crystal. The deformation mechanisms considering in the present analys...
Masafumi Noda, Tsuyoshi Mayama, Yoshihito Kawamura
Magnesium Technology   501-504   May 2010   [Refereed]
Mg-Zn-Y alloys are composed of a-Mg and LPSO phases. Extruded Mg-Zn-Y alloys are known to have dramatically enhanced strength because of kink deformation occurring in the LPSO phase during plastic deformation. In the present study, the effects of ...
Tetsuya Ohashi, Ryota Fukao, Yosuke Ito, Tsuyoshi Mayama
Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A   76 367-369   Apr 2010   [Refereed]
Plastic slip deformation of a HCP bicrystal is analyzed by a crystal plasticity FE code and distribution of plastic shear strain on the primary and secondary slip systems, as well as some stress components are examined. The constituent crystal are...
Tsuyoshi Mayama, Kazuya Aizawa, Yuichi Tadano, Mitsutoshi Kuroda
Computational Materials Science   47(2) 448-455   Dec 2009   [Refereed]
The microstructural mechanism of the strength differential (SD) effect in polycrystalline pure magnesium with rolling texture is numerically investigated by rate-dependent crystal plasticity finite element analysis. The present analysis method con...
T. Mayama, T. Ohashi, R. Kondou
International Journal of Plasticity   25(11) 2122-2140   Nov 2009   [Refereed]
Crystal plasticity finite element analysis of cyclic deformation of compatible type FCC bicrystals are performed. The model specimen used in the analysis is a virtual FCC bicrystal with an isotropic elastic property; therefore, the effect of const...
Masafumi Noda, Tsuyoshi Mayama, Yoshihito Kawamura
Materials Transactions   50 2526-2531   Nov 2009   [Refereed]
Mg96Zn2Y2 alloy with a long period stacking ordered (LPSO) phase was produced by extrusion, and the effects of annealing on its microstructure and mechanical properties were investigated. Annealing at temperatures up to 623 K improved the elongati...
Tsuyoshi Mayama, Katsuhiko Sasaki, Mitsutoshi Kuroda
Acta Materialia   56(12) 2735-2743   Jul 2008   [Refereed]
This study is a quantitative evaluation of dislocation structures due to cyclic plasticity with small strain amplitudes in austenitic stainless steel 316L. First, dislocation structures in specimens after 100 cycles of cyclic loading with strain a...
Tsuyoshi Mayama, Katsuhiko Sasaki, Yoshihiro Narita
Key Engineering Materials   353-358 607-610   Nov 2007   [Refereed]
The present paper investigates relationships between the macroscopic viscoplasticity and the surface morphological changes at room temperature for commercially pure titanium (CP-Ti) and austenitic stainless steel (SUS316L). Pure tensile test and t...
Tsuyoshi Mayama, Katsuhiko Sasaki, Yoshihiro Narita
Key Engineering Materials   345-346 I 49-52   May 2007   [Refereed]
In the present study, a new approach is conducted to evaluate dislocation structure induced by cyclic plasticity. First, cyclic plastic loading tests are carried out up to 100 cycles with three different small strain amplitudes on SUS316L stainles...
T. Mayama, K. Sasaki, H. Ishikawa
International Journal of Plasticity   23(5) 915-930   May 2007   [Refereed]
This paper presents a unified constitutive model for cyclic viscoplasticity and changes occurring in subsequent viscoplastic deformation due to the evolution of dislocation structures. The model considers the viscoplastic potential and a modified ...
Tsuyoshi Mayama, Katsuhiko Sasaki, Yoshihiro Narita
Key Engineering Materials   340-341 II 871-876   Apr 2007   [Refereed]
The relationship between a phenomenological constitutive model and dislocation structures is investigated for type 316L stainless steel in cyclic plasticity. First, the cyclic plastic loading tests are conducted to observe the macroscopic deformat...
T. Mayama, K. Sasaki
International Journal of Plasticity   22(2) 374-390   Feb 2006   [Refereed]
This paper investigates the effects of cyclic preloading on the subsequent viscoplastic deformation. A series of experiments such as the subsequent creep, subsequent stress relaxation, and cyclic loading with strain rate changes after cyclic prelo...
Tsuyoshi Mayama, Katsuhiko Sasaki, Hiromasa Ishikawa
Key Engineering Materials   274-276 229-234   Dec 2004   [Refereed]
In this study, subsequent time-dependent deformation after cyclic preloading and a constitutive model is discussed. Stress-strain curves of 10thand 30th cycle of cyclic loading under the strain rate of 0.01%/sec with the strain amplitude of 0.5% u...
T. Mayama, K. Sasaki, H. Ishikawa
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science   218(C9) 901-908   Sep 2004   [Refereed]
This paper treats both experiments and simulations of biaxial ratcheting. The experiments are conducted using a tubular specimen of type 304 stainless steel at room temperature. The specimen was subjected to cyclic shear straining under the axial ...
Tsuyoshi Mayama, Katsuhiko Sasaki, Hiromasa Ishikawa
Nippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A   68(676) 1737-1743   Dec 2002   [Refereed]
In this paper, to verify the applicability of the viscoplastic constitutive model, which was previously proposed by the authors, to the viscoplastic deformation at the high temperatures, a series of tests such as cyclic tension-compression loading...
Tsuyoshi Mayama, Katsuhiko Sasaki, Hiromasa Ishikawa
Key Engineering Materials   233-236 83-88   Dec 2002   [Refereed]
This paper treats a unified constitutive model for the viscoplastic and creep deformations. First, experimental observations on the correlation between back stress due to plasticity and creep are carried out using Type 304 stainless steel at room ...
Tsuyoshi Mayama, Katsuhiko Sasaki, Hiromasa Ishikawa
Nippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A   68(675) 1582-1587   Nov 2002   [Refereed]
In this work, a series of biaxial ratchetting tests and numerical simulations are carried out. Experimental results obtained using the tubular specimen of SUS 304 stainless steel subjected to cyclic shear staining under the superposed axial stress...
Tsuyoshi Mayama, Katsuhiko Sasaki, Hiromasa Ishikawa
Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A   67(663) 1768-1775   Dec 2001   [Refereed]
In this paper, a series of experiments, which showed the interaction between plasticity and creep, were carried out and the unified constitutive model was proposed. First, experiments such as pure tension, pure creep, cyclic loading, intermittent ...
Katsuhiko Sasaki, Tsuyoshi Mayama, Hiromasa Ishikawa
Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A   66(649) 1666-1673   Dec 2000   [Refereed]
Interaction between plastic and creep deformation is an important matter to construct a constitutive model for viscoplasticity. Particularly, equivalence of back stress affecting plastic deformation and affecting creep deformation takes an importa...
Crystal Plasticity Analysis of Change in Incompatibility and Activities of Slip Systems in α-phase of Ti alloy under Cyclic Loading
Y. Kawano, T. Ohashi, T. Mayama, R. Kondou
International Journal of Mechanical Sciences      Sep 2017   [Refereed]

Misc

 
黒田充紀, 眞山剛, 浜孝之
ぷらすとす   1(9) 639‐643   Sep 2018
眞山剛
まてりあ   56(8) 484-487   Aug 2017   [Refereed][Invited]

Conference Activities & Talks

 
眞山剛, 峯洋二, 高木康介, 高島和希
軽金属学会大会講演概要   10 Oct 2018   
高木康介, 眞山剛, 峯洋二, 高島和希
日本金属学会講演概要(CD-ROM)   5 Sep 2018   
河野義樹, 大橋鉄也, 光原昌寿, 眞山剛, 奥山彫夢, 佐藤満弘
日本金属学会講演概要(CD-ROM)   5 Sep 2018   
眞山剛, 萩原幸司, 只野裕一, 大橋鉄也
日本金属学会講演概要(CD-ROM)   5 Sep 2018   
眞山剛, 萩原幸二, 只野裕一, 大橋鉄也
軽金属学会大会講演概要   26 Apr 2018   

Research Grants & Projects

 
Underlying mechanism of lattice strain development owing to heterogeneous deformation
Japan society for the promotion of science: Graint-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
Project Year: Apr 2019 - Mar 2011    Investigator(s): MAYAMA Tsuyoshi