Atomistic simulation of fracture in Ni3Al

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	Atomistic simulation of fracture in Ni3Al
	H. X. Xie ; C. Y. Wang ; T. Yu
刊名	Journal of Materials Research
	2008
卷号	23 期号:6 页码:1597-1603
关键词	dislocation nucleation single-crystals fault energies gamma'-phase alpha-iron crack dynamics behavior alloys superdislocations
ISSN号	0884-2914
中文摘要	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.
原文出处	://WOS:000256392600013
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/33236]
专题	金属研究所_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.