Effect of ball-milling time on microstructures and mechanical properties of heterogeneity-improved heterostructured 2024Al alloys fabricated through powder thixoforming

doi:10.1016/j.matchemphys.2022.126684

	Effect of ball-milling time on microstructures and mechanical properties of heterogeneity-improved heterostructured 2024Al alloys fabricated through powder thixoforming
	Liu, G. F.; Chen, T. J.
	2022-11-15
发表期刊	Materials Chemistry and Physics
ISSN	0254-0584
卷号	291
摘要	In this study, several heterogeneity-improved heterostructured 2024Al alloys were fabricated by forming in situ Al3Ti particles through powder thixoforming. The results indicated that the inter-soft-domain distance (the size of primary grains) decreased and reached its minimum at the ball-milling time of 8 h, and then, slightly increased. The boundary density of primary-grain/secondarily solidified structure (SSSs) domains reached the maximum at this time. The resulting alloy exhibited the ultimate tensile strength, yield strength, and elongation to failure of 430 MPa, 275 MPa, and 8.03%, showing an enhancement of 41.9%, 36.1%, and 10%, respectively, compared with those of the 2024Al matrix alloy without Al3Ti particles. This alloy exhibited an excellent synergy of strength and ductility. Heterogeneity between the primary-grain and SSS domains of the alloy was considerably higher than that of the matrix alloy but slightly lower than that of the alloys prepared with the milling times of 2 and 10 h. This finding indicated that the alloy prepared at the milling time of 8 h exhibited a reasonably increased heterogeneity. Strength enhancement was attributed to the hetero-deformation-induced (HDI) strengthening, solution strengthening, grain refinement strengthening, and load transfer strengthening. The excellent ductility was mainly ascribed to the large strain partitioning due to the high boundary density of primary-grain/SSS domains, which led to an increase in the uniform elongation plateau with a high work hardening rate. © 2022 Elsevier B.V.
关键词	Aluminum alloys Ball milling Binary alloys Ductility Fabrication Grain refinement Milling (machining) Strain hardening Tensile strength Al-alloy Ball milling time Matrix alloy Milling time Powder thixoforming Solidified structures Strengthening mechanisms Structure domains Thixo-forming Toughening mechanisms
DOI	10.1016/j.matchemphys.2022.126684
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000855303800003
出版者	Elsevier Ltd
EI入藏号	20223612701933
EI主题词	Titanium alloys
EI分类号	537.1 Heat Treatment Processes ; 541.2 Aluminum Alloys ; 542.3 Titanium and Alloys ; 604.2 Machining Operations ; 802.3 Chemical Operations ; 951 Materials Science
来源库	WOS
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/159718
专题	兰州理工大学
通讯作者	Chen, T. J.
作者单位	Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China
第一作者单位	省部共建有色金属先进加工与再利用国家重点实验室
通讯作者单位	省部共建有色金属先进加工与再利用国家重点实验室
第一作者的第一单位	省部共建有色金属先进加工与再利用国家重点实验室
推荐引用方式 GB/T 7714	Liu, G. F.,Chen, T. J.. Effect of ball-milling time on microstructures and mechanical properties of heterogeneity-improved heterostructured 2024Al alloys fabricated through powder thixoforming[J]. Materials Chemistry and Physics,2022,291.
APA	Liu, G. F.,&Chen, T. J..(2022).Effect of ball-milling time on microstructures and mechanical properties of heterogeneity-improved heterostructured 2024Al alloys fabricated through powder thixoforming.Materials Chemistry and Physics,291.
MLA	Liu, G. F.,et al."Effect of ball-milling time on microstructures and mechanical properties of heterogeneity-improved heterostructured 2024Al alloys fabricated through powder thixoforming".Materials Chemistry and Physics 291(2022).