Intrinsically higher fatigue cracking resistance of the penetrable and movable incoherent twin boundary

IMR OpenIR

	Intrinsically higher fatigue cracking resistance of the penetrable and movable incoherent twin boundary
	L. L. Li; P. Zhang; Z. J. Zhang; Z. F. Zhang
	2014
发表期刊	Scientific Reports
ISSN	2045-2322
卷号	4
摘要	Incoherent twin boundaries (ITBs) are widespread and play a crucial role in unidirectional deformation behavior of materials, however, the intrinsic role of individual ITB under cyclic loading remains elusive. Here we show the fatigue cracking behavior of Cu bicrystal with an ITB as its sole interface for the first time. The slip bands (SBs) could transfer through the ITB; meanwhile, the ITB could migrate with the motion of partial dislocations. Both the penetrability and mobility contribute to the higher fatigue cracking resistance of the ITB and hence the fatigue crack nucleates along the SBs preferentially. These new findings not only shed light on the fatigue cracking mechanisms of a penetrable boundary with direct evidence but also could provide important implications for future interfacial optimization of metallic materials.
部门归属	[li, l. l. ; zhang, p. ; zhang, z. j. ; zhang, z. f.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. ; zhang, zf (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china. ; zhfzhang@imr.ac.cn
关键词	Grain-boundary Crystallographic Orientation Nanotwinned Metals Maximum Strength Copper Deformation Dislocation Coherent Nucleation Mechanisms
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/72382
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. L. Li,P. Zhang,Z. J. Zhang,et al. Intrinsically higher fatigue cracking resistance of the penetrable and movable incoherent twin boundary[J]. Scientific Reports,2014,4.
APA	L. L. Li,P. Zhang,Z. J. Zhang,&Z. F. Zhang.(2014).Intrinsically higher fatigue cracking resistance of the penetrable and movable incoherent twin boundary.Scientific Reports,4.
MLA	L. L. Li,et al."Intrinsically higher fatigue cracking resistance of the penetrable and movable incoherent twin boundary".Scientific Reports 4(2014).