Kumamoto University
Department of Materials Science and Engineering

Solid Mechanics Laboratory

since 2013


What's new

What's new

13/Sep/2017 Minor update (Member etc.)


Mechanics is one of the oldest research fields in natural science. Recent significant progress of numerical ability of computers makes it possible to explore non-linear mechanics of solid materials. We investigate deformation behavior of solid materials with the aim of further development of mechanics.

a. Development of constitutive models for metallic materials based on experimental observation.
b. Prediction and evaluation of macroscopic deformation behavior and/or microstructure development by finite element methods with the developed constitutive models.

Research topics
1. Experimental observation of deformation behavior and microstructural change of polycrystalline metals
2. Numerical analysis of deformation behavior of metallic materials
3. Modelling of deformation behavior of metallic materials

2016-2017 Member

 Associate professor: Tsuyoshi MAYAMA

B4: Syota EGUCHI
B4: Takuya MAEDA
B4: Ryosuke KOKETSU

Past member


B1 Engineering Mechanics
B2 Metal Forming
M1 Continuum Mechanics
D1 Non-linear Continuum Mechanics

Laboratory experiments
B1 Measurement of Young's modulus
B3 Aging of Al-Cu alloy
B3 Quantitative evaluation of intra-granular non-uniform deformation in Magnesium alloys


Link to external website (Research Gate)

Selected papers:
D. Kishi, T. Mayama, Y. Mine, K. Takashima, Crystallographic study of plasticity and grain boundary separation in FeCo alloy using small single- and bi-crystalline specimens, Scripta Materialia Vol.142 (2018), pp.1-5.
Y. Mine, R. Maezono, T. Mayama, J. Wu, Y. L. Chiu, P. Bowen, K. Takashima, Plasticity and crack extension in single-crystalline long-period stacking ordered structures of Mg85Zn6Y9 alloy under micro-bending, Journal of Alloys and Compounds Vol.718 (2017), pp.433-442.
S. Ogata, T. Mayama, Y. Mine, K. Takashima, Effect of microstructural evolution on deformation behaviour of pre-strained dual-phase steel, Materials Science and Engineering A Vol.689 (2017), pp.353-365.
K. Kwak, T. Mayama, Y. Mine, K. Takashima, Anisotropy of strength and plasticity in lath martensite steel, Materials Science and Engineering A Vol.674 (2016), pp.104-116.
K. Shiraishi, T. Mayama, M. Yamasaki, Y. Kawamura, Strain-hardening behavior and microstructure development in polycrystalline as-cast Mg-Zn-Y alloys with LPSO phase subjected to cyclic loading, Materials Science and Engineering A Vol.672 (2016), pp.49-58.
K. Hagihara, T. Mayama, M. Honnami, M. Yamasaki, H. Izuno, T. Okamoto, T. Ohashi, T. Nakano, Y. Kawamura, Orientation dependence of the deformation kink band formation behavior in Zn single crystal, International Journal of Plasticity Vol.77 (2016), pp.174-191.
T.Mayama, T.Ohashi, Y.Tadano, K.Hagihara, Crystal plasticity analysis of development of intragranular misorientations due to kinking in HCP single crystals subjected to uniaxial compressive loading, Materials Transactions Vol.56 (2015), pp.963-972.
M.Tane, T.Mayama, A.Oda, H.Nakajima, Effect of crystallographic texture on mechanical properties in porous magnesium with oriented cylindrical pores, Acta Materialia Vol.84 (2015), pp.80-94.
H.Kitahara, T.Mayama, K.Okumura, Y.Tadano, M.Tsushida, S.Ando, Anisotropic deformation induced by spherical indentation of pure Mg single crystals, Acta Materialia Vol.78 (2014), pp.290-300.
T.Mayama, M.Noda, R.Chiba, M. Kuroda, Crystal plasticity analysis of texture development in magnesium alloy during extrusion, International Journal of Plasticity Vol.27 (2011) pp.1916-1935.
T.Mayama, T.Ohashi, R.Kondou, Geometrically necessary dislocation structure organization in FCC bicrystal subjected to cyclic plasticity, International Journal of Plasticity Vol.25 (2009) pp.2122-2140.
T.Mayama, K.Aizawa, Y.Tadano, M.Kuroda, Influence of twinning deformation and lattice rotation on strength differential effect in polycrystalline pure magnesium with rolling texture, Computational Materials Science Vol.47 (2009) pp.448-455.
T.Mayama, K.Sasaki, M.Kuroda, Quantitative evaluations for strain amplitude dependent organization of dislocation structures due to cyclic plasticity in austenitic stainless steel 316L, Acta Materialia Vol.56 (2008) pp.2735-2743.
T.Mayama, K.Sasaki, H.Ishikawa, A Constitutive Model for Cyclic Viscoplasticity Considering Changes in Subsequent Viscoplastic Deformation due to the Evolution of Dislocation Structures, International Journal of Plasticity Vol.23 (2007) pp.915-930.
T.Mayama; K.Sasaki, Investigation of subsequent viscoplastic deformation of austenitic stainless steel subjected to cyclic preloading, International Journal of Plasticity Vol.22 (2006) pp.374-390.


Mayama's office:
 Researcher Room 2, 4th floor, IRCAST

 Open Laboratory 1, 4th floor, IRCAST

* IRCAST: The building S12 of Kurokami South Campus in the map at the following web page
  Campus Map (Link to external website)

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