Molecular dynamics study of the shear deformation in TiAl/Ti(3)Al system

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	Molecular dynamics study of the shear deformation in TiAl/Ti(3)Al system
	Y. L. Liu; X. Zhao; Z. N. Zhang; L. Zhang; S. Q. Wang; H. Q. Ye
	2009
发表期刊	Acta Physica Sinica
ISSN	1000-3290
卷号	58 期号:6 页码:S246-S253
摘要	The dynamical shear deformation induced hexagonal close-packed (HCP) <-> face-centred cubic (FCC) processes in TiAl/Ti(3)Al system are investigated by the molecular dynamics method. The details of the dislocation initiation, the microstructure evolution and the force field effect are presented and discussed. The analyses of the potential variation and the structural snapshots show that the shear deformation is related to the "stick-slip" behaviour. The interface can transit the energy and counterpoise the deformation between the hetero-phases. The HCP-Ti(3)Al (FCC-TiAl) shows obvious (little) covariant deformation stage before the initiation of the fault transition. For HCP-Ti(3)Al, the final structure is the continued FCC stacking in a region with the large force field, and the FCC and HCP plates alternatively occur near the interface. For FCC-TiAl, twin and SISF are the main remnants, and the meta-stable HCP phase may occur with the increment of the force field.
部门归属	[liu yong-li; zhao xing; zhang zong-ning; zhang lin] northeastern univ, coll sci, shenyang 110004, peoples r china. [wang shao-qing; ye heng-qiang] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [zhao xing] liaoning univ technol, dept math & phys, jinzhou 121001, peoples r china.;liu, yl (reprint author), northeastern univ, coll sci, shenyang 110004, peoples r china;ylliu@imp.neu.edu.cn
关键词	TiAl/t(3)Al Molecular Dynamics Simulation Shear Deformation Fault Structure Gamma-titanium Aluminides Phase-transformation Interfacial Energies Electron-microscopy Alloys Microstructure 1st-principles Simulations Behavior Fracture
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32135
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. L. Liu,X. Zhao,Z. N. Zhang,et al. Molecular dynamics study of the shear deformation in TiAl/Ti(3)Al system[J]. Acta Physica Sinica,2009,58(6):S246-S253.
APA	Y. L. Liu,X. Zhao,Z. N. Zhang,L. Zhang,S. Q. Wang,&H. Q. Ye.(2009).Molecular dynamics study of the shear deformation in TiAl/Ti(3)Al system.Acta Physica Sinica,58(6),S246-S253.
MLA	Y. L. Liu,et al."Molecular dynamics study of the shear deformation in TiAl/Ti(3)Al system".Acta Physica Sinica 58.6(2009):S246-S253.