Cryorolling effect on microstructure and mechanical properties of Fe-25Cr-20Ni austenitic stainless steel

IMR OpenIR

	Cryorolling effect on microstructure and mechanical properties of Fe-25Cr-20Ni austenitic stainless steel
	Xiong, Yi; He, Tiantian; Wang, Junbei; Lu, Yan; Chen, Lufei; Ren, Fengzhang; Liu, Yuliang; Volinsky, Alex A.; xy_hbdy@163.com
	2015
发表期刊	MATERIALS & DESIGN
ISSN	0261-3069
卷号	88 页码:398-405
摘要	Microstructure and mechanical properties of the Fe-25Cr-20Ni austenitic stainless steel after cryorolling with different reductions were investigated by means of optical, scanning and transmission electron microscopy, X-ray diffraction and mini-tensile testing. High density tangled dislocations and a small amount of deformation twins formed after 30% deformation. After 50% strain, a large amount of deformation twins was generated. Meanwhile, interactions between the twins and dislocations started to happen. As the strain increased to 70%, many deformation twins were produced and the interactions between the twins and dislocations were significantly enhanced. When the cryorolling was 90%, the grain size was refined to the nanometer scale. XRD analysis indicated that the diffraction peaks of the samples became broader with the strain increase. The yield strength and the ultimate strength increased from 305 MPa and 645 MPa (before deformation) to 1502 MPa and 1560 MPa (after 90% deformation), respectively. However, the corresponding elongation decreased from 40.8% to 6.4%. The tensile fracture morphology changed from typical dimple rupture to a mixture of quasi-cleavage and ductile fracture. After 90% deformation, the microhardness was 520 HV, which increased by 100% compared with the original un-deformed sample. (C) 2015 Elsevier Ltd. All rights reserved.
部门归属	[xiong, yi ; wang, junbei ; lu, yan ; chen, lufei ; ren, fengzhang ; liu, yuliang] henan univ sci & technol, sch mat sci & engn, luoyang 471023, peoples r china ; [xiong, yi ; ren, fengzhang] collaborat innovat ctr nonferrous met, luoyang 471023, peoples r china ; [he, tiantian] 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	Austenitic Stainless Steel Cryorolling Microstructure Mechanical Properties
资助者	National Natural Science Foundation of China [50801021, 51201061]; Program for the Young Key Teachers in the Henan Province [2011GGJS-070]; Henan Province Program for Science and Technology Innovation Excellent Talents [144200510009]; Science and technology project of Henan Province [152102210077]; Science and Technology Innovation Team of Henan University of Science and Technology [2015XTD006]
收录类别	sci
语种	英语
WOS记录号	WOS:000364257300049
引用统计	被引频次：45[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/321006/74702
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, Tiantian,Wang, Junbei,et al. Cryorolling effect on microstructure and mechanical properties of Fe-25Cr-20Ni austenitic stainless steel[J]. MATERIALS & DESIGN,2015,88:398-405.
APA	Xiong, Yi.,He, Tiantian.,Wang, Junbei.,Lu, Yan.,Chen, Lufei.,...&xy_hbdy@163.com.(2015).Cryorolling effect on microstructure and mechanical properties of Fe-25Cr-20Ni austenitic stainless steel.MATERIALS & DESIGN,88,398-405.
MLA	Xiong, Yi,et al."Cryorolling effect on microstructure and mechanical properties of Fe-25Cr-20Ni austenitic stainless steel".MATERIALS & DESIGN 88(2015):398-405.