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	MOLECULAR DYNAMICS SIMULATION OF PLASTIC BEHAVIOR OF THE Ni NANOFILM DURING SCRATCH PROCESS
	Liu Xiaoming ; You Xiaochuan ; Liu Zhanli ; Nie Junfeng ; Zhuang Zhuo
	2010-10-12 ; 2010-10-12
关键词	friction molecular dynamics simulation nanofilm grain boundary dislocation DISLOCATION NUCLEATION ATOMISTIC SIMULATIONS INCIPIENT PLASTICITY GRAIN-BOUNDARY STICK-SLIP NANOINDENTATION COPPER SCALE CU DEFORMATION Metallurgy & Metallurgical Engineering
中文摘要	The nanoscrath process of nickel nanofilm and plastic. deformation mechanisms in the nanofilm are investigated by using molecular dynamics simulation. The results reveal that the stacking faults end at the grain boundaries as well as prismatic dislocation loops, leading to that plastic deformation on the grain boundary keeps in the film rather than transmiting downward the substrate. For thinner films, stacking faults are preferred in the scratch process, which increase storage capacity of plastic deformation in the film, and further inhibit the stick slip amplitude in the friction oscillation process. For thicker films, dislocation loops, which glide along slip plane. downward to the grain boundary, dominate over the stacking faults, and finally dissipate on the grain boundaries. Since the intergrain stacking faults are inactive in thicker films, the stick slip phenomenon is similar to that in single crystal. The evolutions of subsurface microstructures in the nanoscratch process result from the dislocation structures emitted in nanofilms with. different thickness.
语种	中文 ; 中文
出版者	SCIENCE PRESS ; BEIJING ; 16 DONGHUANGCHENGGEN NORTH ST, BEIJING 100717, PEOPLES R CHINA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/78937]
专题	清华大学
推荐引用方式 GB/T 7714	Liu Xiaoming,You Xiaochuan,Liu Zhanli,et al. MOLECULAR DYNAMICS SIMULATION OF PLASTIC BEHAVIOR OF THE Ni NANOFILM DURING SCRATCH PROCESS[J],2010, 2010.
APA	Liu Xiaoming,You Xiaochuan,Liu Zhanli,Nie Junfeng,&Zhuang Zhuo.(2010).MOLECULAR DYNAMICS SIMULATION OF PLASTIC BEHAVIOR OF THE Ni NANOFILM DURING SCRATCH PROCESS..
MLA	Liu Xiaoming,et al."MOLECULAR DYNAMICS SIMULATION OF PLASTIC BEHAVIOR OF THE Ni NANOFILM DURING SCRATCH PROCESS".(2010).

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