Nonuniformity of morphology and mechanical properties on the surface of single crystal superalloy subjected to laser shock peening

IMR OpenIR

	Nonuniformity of morphology and mechanical properties on the surface of single crystal superalloy subjected to laser shock peening
	Lu, G. X.; Liu, J. D.; Qiao, H. C.; Zhou, Y. Z.; Jin, T.; Sun, X. F.; Hu, Z. Q.; jdliu@imr.ac.cn
	2016
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	658 页码:721-725
摘要	Surface topography and microhardness of a Ni-based single crystal superalloy subjected to laser shock peening (LSP) were investigated. So many morphological surface reliefs were found on the shocked surface, and a microscopic formation mechanism of those surface reliefs was proposed. The formation of surface reliefs can be attributed to the plastic deformation of gamma' precipitates and gamma matrix channels in the lateral or longitudinal directions. The nonuniformity of structures of the deformed surface layer was ascribed to the formation of surface reliefs. The microhardness of surface reliefs was higher than that of adjacent matrixes, so a nonuniformity of micromechanical properties coexisted on the surface of sample subjected to LSP. With the increase of LSP impact times, micromechanical properties difference between surface reliefs and adjacent matrixes widened due to a very high proportion of the longitudinal deformation of gamma' phases contained in the surface relief structures. (C) 2015 Elsevier B.V. All rights reserved.
部门归属	[lu, g. x. ; liu, j. d. ; zhou, y. z. ; jin, t. ; sun, x. f. ; hu, z. q.] chinese acad sci, inst met res, shenyang 110016, peoples r china ; [qiao, h. c.] chinese acad sci, shenyang inst automat, shenyang 110016, peoples r china
关键词	Single Crystal Superalloy Laser Shock Peening Surface Relief Microhardness
资助者	High Technology Research and Development Program of China [2014AA041701]; National Natural Science Foundation of China (NSFC) [51171179, 51271174, 51331005, 11332010]
收录类别	sci
语种	英语
WOS记录号	WOS:000366940100100
引用统计	被引频次：25[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/321006/75026
专题	中国科学院金属研究所
通讯作者	jdliu@imr.ac.cn
推荐引用方式 GB/T 7714	Lu, G. X.,Liu, J. D.,Qiao, H. C.,et al. Nonuniformity of morphology and mechanical properties on the surface of single crystal superalloy subjected to laser shock peening[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2016,658:721-725.
APA	Lu, G. X..,Liu, J. D..,Qiao, H. C..,Zhou, Y. Z..,Jin, T..,...&jdliu@imr.ac.cn.(2016).Nonuniformity of morphology and mechanical properties on the surface of single crystal superalloy subjected to laser shock peening.JOURNAL OF ALLOYS AND COMPOUNDS,658,721-725.
MLA	Lu, G. X.,et al."Nonuniformity of morphology and mechanical properties on the surface of single crystal superalloy subjected to laser shock peening".JOURNAL OF ALLOYS AND COMPOUNDS 658(2016):721-725.