Effects of laser pulse energy on surface microstructure and mechanical properties of high carbon steel

IMR OpenIR

	Effects of laser pulse energy on surface microstructure and mechanical properties of high carbon steel
	Xiong Yi; He Tian-tian; Li Peng-yan; Chen Lu-fei; Ren Feng-zhang; Volinsky, Alex A.; xy_hbdy@163.com
	2015
发表期刊	JOURNAL OF CENTRAL SOUTH UNIVERSITY
ISSN	2095-2899
卷号	22 期号:12 页码:4515-4520
摘要	Surface microstructure and mechanical properties of pearlitic Fe-0.8%C (mass fraction) steel after laser shock processing (LSP) with different laser pulse energies were investigated by scanning electron microscopy(SEM), transmission electron microscopy(TEM), X-ray diffraction(XRD) and microhardness measurements. After LSP, the cementite lamellae were bent, kinked and broken into particles. Fragmentation and dissolution of the cementite lamellae were enhanced by increasing the laser pulse energy. Due to the dissolution of carbon atoms in the ferritic matrix, the lattice parameter of alpha-Fe increased. The grain size of the surface ferrite was refined, and the microstructure changed from lamellae to ultrafine micro-duplex structure (ferrite (alpha)+cementite (theta)) with higher laser pulse energy, accompanied by the residual stress and microhardness increase.
部门归属	[xiong yi ; li peng-yan ; chen lu-fei ; ren feng-zhang] henan univ sci & technol, sch mat sci & engn, luoyang 471023, peoples r china ; [xiong yi ; ren feng-zhang] collaborat innovat ctr nonferrous met, luoyang 471023, peoples r china ; [he tian-tian] chinese acad sci, inst met res, shenyang 110016, peoples r china ; [volinsky, alex a.] univ s florida, dept mech engn, tampa, fl 33620 usa
关键词	Pearlitic Steel Laser Shock Processing Microstructure Microhardness Residual Stress
资助者	National Natural Science Foundation of China [50801021, 51201061]; Henan Province Program for Science and Technology Innovation Excellent Talents, China [144200510009]; Science and Technology Project of Henan Province, China [152102210077]; Science and Technology Innovation Team of Henan University of Science and Technology, China [2015XTD006]
收录类别	sci
语种	英语
WOS记录号	WOS:000366635500002
引用统计	被引频次：7[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/321006/74786
专题	中国科学院金属研究所
通讯作者	xy_hbdy@163.com
推荐引用方式 GB/T 7714	Xiong Yi,He Tian-tian,Li Peng-yan,et al. Effects of laser pulse energy on surface microstructure and mechanical properties of high carbon steel[J]. JOURNAL OF CENTRAL SOUTH UNIVERSITY,2015,22(12):4515-4520.
APA	Xiong Yi.,He Tian-tian.,Li Peng-yan.,Chen Lu-fei.,Ren Feng-zhang.,...&xy_hbdy@163.com.(2015).Effects of laser pulse energy on surface microstructure and mechanical properties of high carbon steel.JOURNAL OF CENTRAL SOUTH UNIVERSITY,22(12),4515-4520.
MLA	Xiong Yi,et al."Effects of laser pulse energy on surface microstructure and mechanical properties of high carbon steel".JOURNAL OF CENTRAL SOUTH UNIVERSITY 22.12(2015):4515-4520.