Atomistic simulation of fracture in Ni3Al

IMR OpenIR

	Atomistic simulation of fracture in Ni3Al
	H. X. Xie; C. Y. Wang; T. Yu
	2008
发表期刊	Journal of Materials Research
ISSN	0884-2914
卷号	23 期号:6 页码:1597-1603
摘要	The molecular dynamics method has been used to simulate mode I cracking in Ni3Al. Close attention has been paid to the process of atomic configuration evolution of the cracks. The simulation results show that at low temperature, the Shockley partial dislocations are emitted before the initiation of the crack propagation, subsequently forming the pseudo-twins on (11 (1) over bar) planes in crack-tip zone, and then the crack cleavage occurs. The emitting of the Shockley partial dislocations accompanies the crack cleavage during the simulation process. At the higher temperature, the blunting at the crack tip is caused by the [110] superdislocations emitted on (100) plane. The present work also shows that the dipole dislocations on (11 (1) over bar) planes in the 1/2[110] dislocation core can be formed.
部门归属	[xie, hong-xian; wang, chong-yu; yu, tao] cent iron & steel res inst, beijing 100081, peoples r china. [wang, chong-yu] acad sinica, int ctr mat phys, shenyang 110016, peoples r china. [wang, chong-yu] tsinghua univ, dept phys, beijing 100084, peoples r china.;xie, hx (reprint author), cent iron & steel res inst, beijing 100081, peoples r china;hongxianxie@163.com
关键词	Dislocation Nucleation Single-crystals Fault Energies Gamma'-phase Alpha-iron Crack Dynamics Behavior Alloys Superdislocations
URL	查看原文
WOS记录号	WOS:000256392600013
引用统计	被引频次：15[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/33236
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. X. Xie,C. Y. Wang,T. Yu. Atomistic simulation of fracture in Ni3Al[J]. Journal of Materials Research,2008,23(6):1597-1603.
APA	H. X. Xie,C. Y. Wang,&T. Yu.(2008).Atomistic simulation of fracture in Ni3Al.Journal of Materials Research,23(6),1597-1603.
MLA	H. X. Xie,et al."Atomistic simulation of fracture in Ni3Al".Journal of Materials Research 23.6(2008):1597-1603.