Co-existence of homogeneous flow and localized plastic deformation in tension of amorphous Ni-P films on ductile substrate

IMR OpenIR

	Co-existence of homogeneous flow and localized plastic deformation in tension of amorphous Ni-P films on ductile substrate
	Lu, X. L.; Li, Y.; Lu, L.; liyi@imr.ac.cn; llu@imr.ac.cn
	2016
发表期刊	ACTA MATERIALIA
ISSN	1359-6454
卷号	106 页码:182-192
摘要	The room temperature mechanical behavior of amorphous Ni-P thin films deposited on Ni substrate under tension was systematically investigated. Due to the effect of substrate confinement, unexpected homogeneous plastic flow occurred in the film simultaneously with cracking or shear banding, which co-contributed to the plastic deformation. The film thickness gradually reduced with increasing tensile strain and the maximum reduction increased up to 69% in 2.6 mu m-thick film. Such a severe plastic deformation leads to significant structure change in the film where free volume annihilation dominates, evidently by almost 100% reduction in the total relaxation enthalpy in the deformed film, accompanied by the densification and hardening. The stress required for shear band and crack propagation in Ni-P film was analyzed on the basis of Griffith's criterion. A deformation map is proposed to account for coexistence of homogeneous flow and localized plastic deformation (shear banding or cracking), as well as the transition of deformation modes. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
部门归属	[lu, x. l. ; li, y. ; lu, l.] chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china
关键词	Amorphous Film Mechanical Property Homogeneous Flow Deformation Mode
资助者	National Basic Research Program of China (973 Program) [2012CB932202]; National Science Foundation of China [51420105001, 51471165, 51371171, 51471172]; Chinese Academy of Sciences
收录类别	sci
语种	英语
WOS记录号	WOS:000371650300019
引用统计	被引频次：33[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/321006/74668
专题	中国科学院金属研究所
通讯作者	liyi@imr.ac.cn; llu@imr.ac.cn
推荐引用方式 GB/T 7714	Lu, X. L.,Li, Y.,Lu, L.,et al. Co-existence of homogeneous flow and localized plastic deformation in tension of amorphous Ni-P films on ductile substrate[J]. ACTA MATERIALIA,2016,106:182-192.
APA	Lu, X. L.,Li, Y.,Lu, L.,liyi@imr.ac.cn,&llu@imr.ac.cn.(2016).Co-existence of homogeneous flow and localized plastic deformation in tension of amorphous Ni-P films on ductile substrate.ACTA MATERIALIA,106,182-192.
MLA	Lu, X. L.,et al."Co-existence of homogeneous flow and localized plastic deformation in tension of amorphous Ni-P films on ductile substrate".ACTA MATERIALIA 106(2016):182-192.