Offsetting strength-ductility tradeoff in Mg-Sn-Zn-Zr alloy by a novel differential-thermal ECAP process

doi:10.1016/j.matlet.2021.130764

	Offsetting strength-ductility tradeoff in Mg-Sn-Zn-Zr alloy by a novel differential-thermal ECAP process
	Zhou, Tianshui 1,2; Guo, Feifei 1,2; Zhang, Quanfa 1,2; Liu, Dexue 1,2
刊名	MATERIALS LETTERS
	2021-12-15
卷号	305
关键词	T6-DTECAP processing Mechanical properties Twins Non-basal slip Microstructure Metal forming and shaping
ISSN号	0167-577X
DOI	10.1016/j.matlet.2021.130764
英文摘要	Equal-channel angular pressing (ECAP) technique is a promising method to enhance the properties of Mg alloys. Herein, a novel differential-thermal ECAP process (DTECAP) with pre-aging treatment (T6) was developed to simultaneously improve strength and ductility of Mg-Sn-Zn-Zr (TZK) alloys. After T6-DTECAP, the TZK alloy exhibited high ultimate tensile strength (UTS) of-323 MPa and excellent elongation (El.) of-28.7%, showing superior balance of strength and ductility. Examination microstructures of TZK alloys revealed that the excellent comprehensive properties were mainly associated with the activation of {10-12} tension twin variants and non basal slips. Moreover, the grain refinement, fine second phases, and transition of strong ED texture to fiber (10-10) 11-20 texture along TD were also beneficial for the enhanced properties. This work aims to provide a novel insight for the development of high-performance Mg alloys using T6-DTECAP processing.
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000702861400009
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148637]
专题	材料科学与工程学院
作者单位	1.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Tianshui,Guo, Feifei,Zhang, Quanfa,et al. Offsetting strength-ductility tradeoff in Mg-Sn-Zn-Zr alloy by a novel differential-thermal ECAP process[J]. MATERIALS LETTERS,2021,305.
APA	Zhou, Tianshui,Guo, Feifei,Zhang, Quanfa,&Liu, Dexue.(2021).Offsetting strength-ductility tradeoff in Mg-Sn-Zn-Zr alloy by a novel differential-thermal ECAP process.MATERIALS LETTERS,305.
MLA	Zhou, Tianshui,et al."Offsetting strength-ductility tradeoff in Mg-Sn-Zn-Zr alloy by a novel differential-thermal ECAP process".MATERIALS LETTERS 305(2021).