Achieving a heterogeneous lamella-structured aluminum alloy with excellent synergy of strength and ductility by powder thixoforming

doi:10.1016/j.msea.2022.142781

	Achieving a heterogeneous lamella-structured aluminum alloy with excellent synergy of strength and ductility by powder thixoforming
	Zhang, Xuezheng 1,2,3; Wang, Yanming 1,2; Chen, Tijun 1,2; Xu, Haozhi 1,2; Ma, Jiqiang 1
刊名	Materials Science and Engineering A
	2022-03-24
卷号	838
关键词	Ductility Scanning electron microscopy Tensile strength Casting method Grain composition Grainsize Hard components Lamellae structures Powder thixoforming Soft components Strength and ductilities Strength-ductility synergies Thixo-forming
ISSN号	0921-5093
DOI	10.1016/j.msea.2022.142781
英文摘要	A lamella structured aluminum alloy with multiple heterogeneities of grain size and composition was prepared by a previously unidentified casting method, powder thixoforming, through mixing harder and softer component alloy powders together. The lamella structure with multiple heterogeneities enabled the resultant alloy to possess an ultimate tensile strength of 346 MPa and a uniform elongation of 16.2%, which represented an increase of 9.5% in comparison with the strength of harder component alloy and an enhancement of 20% compared to the ductility of softer component alloy, exhibiting an excellent strength-ductility synergy. A strong effect of strain partitioning was clearly evidenced in such a structure by in-situ scanning electron microscope observation, through which the underlying mechanisms for strengthening and toughening were clarified. The results obtained in this work would provide a simple promising approach to fabricate lamella structured metallic materials with high tensile performance. © 2022 Elsevier B.V.
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000761819000001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/157929]
专题	材料科学与工程学院省部共建有色金属先进加工与再利用国家重点实验室
作者单位	1.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 2.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 3.Dongguan Eontec Co. Ltd., Dongguan; 523662, China
推荐引用方式 GB/T 7714	Zhang, Xuezheng,Wang, Yanming,Chen, Tijun,et al. Achieving a heterogeneous lamella-structured aluminum alloy with excellent synergy of strength and ductility by powder thixoforming[J]. Materials Science and Engineering A,2022,838.
APA	Zhang, Xuezheng,Wang, Yanming,Chen, Tijun,Xu, Haozhi,&Ma, Jiqiang.(2022).Achieving a heterogeneous lamella-structured aluminum alloy with excellent synergy of strength and ductility by powder thixoforming.Materials Science and Engineering A,838.
MLA	Zhang, Xuezheng,et al."Achieving a heterogeneous lamella-structured aluminum alloy with excellent synergy of strength and ductility by powder thixoforming".Materials Science and Engineering A 838(2022).