One-step annealing optimizes strength-ductility tradeoff in pearlitic steel wires

doi:10.1016/j.msea.2019.04.086

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	One-step annealing optimizes strength-ductility tradeoff in pearlitic steel wires
	Xiang L(向亮); Liang LW(梁伦伟); Wang YJ(王云江); Chen Y(陈艳); Wang HY(汪海英); Dai LH(戴兰宏)
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2019-05-29
卷号	757 页码:1-13
关键词	Pearlitic steel wire Carbon state Annealing Strength and ductility Atomistic simulations
ISSN号	0921-5093
DOI	10.1016/j.msea.2019.04.086
通讯作者	Dai, L. H.(lhdai@lnm.imech.ac.cn)
英文摘要	In this paper, the mechanical properties of a cold-drawn wire (epsilon = 2.43) are modulated by simple annealing and the variation of its microstructure is characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD) and molecular dynamics (MD) simulation. The tensile ductility of the wire can be improved for about three times without compromising its strength when being annealed at 325 degrees C for 10-30 min. It is convinced that solid solution of carbon atoms from decomposed cementite lamellae improve the wire strength at low temperature annealing (up to 250 degrees C) and make the wire strength basically equal the as-drawn state even though cementite lamellae are weakened by cementite recrystallization at 325 degrees C. And reversely the weakening cementite layers lead to the great improvement of wire ductility at this time since it relaxes the restriction to the moving of dislocations. At higher annealing temperature, the wire strength decreases with the growth of cementite and ferrite grains. The appearance of nano-recrystallized cementite grains at a medium annealing temperature may be a critical factor governing the enhanced wire mechanical properties.
分类号	一类
资助项目	National Key Research and Development Program of China[2017YFB0702003] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040302] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040303] ; Natural Science Foundation of China[11572324] ; Natural Science Foundation of China[11790292] ; Key Research Program of Frontier Sciences[QYZDJSSW-JSC011]
WOS关键词	COLD-DRAWN ; CEMENTITE DISSOLUTION ; ATOM-PROBE ; CARBON ; DEFORMATION ; DISLOCATIONS ; DYNAMICS ; FERRITE ; MECHANISMS ; PHASE
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
WOS记录号	WOS:000470944600001
资助机构	National Key Research and Development Program of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Natural Science Foundation of China ; Key Research Program of Frontier Sciences
其他责任者	Dai, L. H.
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/79394]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Xiang L,Liang LW,Wang YJ,et al. One-step annealing optimizes strength-ductility tradeoff in pearlitic steel wires[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2019,757:1-13.
APA	向亮,梁伦伟,王云江,陈艳,汪海英,&戴兰宏.(2019).One-step annealing optimizes strength-ductility tradeoff in pearlitic steel wires.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,757,1-13.
MLA	向亮,et al."One-step annealing optimizes strength-ductility tradeoff in pearlitic steel wires".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 757(2019):1-13.