A simultaneous enhancement of both strength and ductility by a novel differential-thermal ECAP process in Mg-Sn-Zn-Zr alloy

doi:10.1016/j.jallcom.2021.161653

	A simultaneous enhancement of both strength and ductility by a novel differential-thermal ECAP process in Mg-Sn-Zn-Zr alloy
	Zhou, Tianshui 1,2; Zhang, Quanfa 1,2; Li, Qianqian 1,2; Wang, Lidong 1,2; Li, Qinglin 1,2; Liu, Dexue 1,2
刊名	Journal of Alloys and Compounds
	2022-01-05
卷号	889
关键词	Ductility Formability Grain boundaries Grain refinement Grain size and shape Magnesium alloys Textures Tin alloys Zinc alloys Zircaloy Channel angular pressing Differential thermals Differential-thermal equal-channel angular pressing ECAP processing Equal channel angular Mechanical Prismatic slip Property Strength and ductilities Zr alloys
ISSN号	09258388
DOI	10.1016/j.jallcom.2021.161653
英文摘要	Equal-channel angular pressing (ECAP) technique has emerged as a desirable strategy to fairly improve the properties of magnesium (Mg) alloys. However, poor workability of Mg alloys results in the failure of ECAP processing. Herein, a novel differential-thermal ECAP (DTECAP) process, simultaneously endowing Mg-Sn-Zn-Zr (TZK) alloys with good deformability and superior mechanical properties, was developed. Analysis of deformation microstructures of TZK alloys revealed that the excellent comprehensive properties were mainly associated with the activation of non-basal slip, grain refinement, and texture weakening. The results indicated that prismaticslip was predominant deformation mode of DTECAP TZK alloys, which contributed significantly to the improvement of strength and ductility (tensile yield strength of ~311 MPa and elongation of ~20.5%). Moreover, the presence of astonishingly submicron scale grains (down to ~1.35 µm) was responsible for the high strength in DTECAP TZK alloys. In particular, high angular grain boundaries contributed to the highest strengthening effects. Besides, after DTECAP processing, a strong basal// ND-preferred texture was weakened from 13.48 to 9.38 (m.r.d.), and exhibited ED-split components. The current study can provide beneficial insights into the development of high-performance Mg alloys via DTECAP processing. © 2021 Elsevier B.V.
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000706790400002
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150855]
专题	材料科学与工程学院
作者单位	1.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China 2.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	Zhou, Tianshui,Zhang, Quanfa,Li, Qianqian,et al. A simultaneous enhancement of both strength and ductility by a novel differential-thermal ECAP process in Mg-Sn-Zn-Zr alloy[J]. Journal of Alloys and Compounds,2022,889.
APA	Zhou, Tianshui,Zhang, Quanfa,Li, Qianqian,Wang, Lidong,Li, Qinglin,&Liu, Dexue.(2022).A simultaneous enhancement of both strength and ductility by a novel differential-thermal ECAP process in Mg-Sn-Zn-Zr alloy.Journal of Alloys and Compounds,889.
MLA	Zhou, Tianshui,et al."A simultaneous enhancement of both strength and ductility by a novel differential-thermal ECAP process in Mg-Sn-Zn-Zr alloy".Journal of Alloys and Compounds 889(2022).