Effects of solid solution treatment on microstructure and mechanical properties of SiCp/2024 Al composite: A comparison with 2024 Al alloy

doi:10.1016/j.msea.2021.141413

CORC > 兰州理工大学 > 兰州理工大学

	Effects of solid solution treatment on microstructure and mechanical properties of SiCp/2024 Al composite: A comparison with 2024 Al alloy
	Liu, G. F.; Chen, T. J.; Wang, Z. J.
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2021-06-10
卷号	817
关键词	SiCp 2024 Al matrix composite Powder thixoforming Solution treatment Microstructure Mechanical properties Strengthening mechanism
ISSN号	0921-5093
DOI	10.1016/j.msea.2021.141413
英文摘要	The effects of solid solution treatment on microstructure and mechanical properties of SiCp/2024 Al matrix composite fabricated via powder thixoforming were investigated, as well as those of 2024 matrix alloy for comparison. The results indicate that the solution progress of the composite is more hysteretic than that of the alloy due to the obstacle role of SiCp to eutectic dissolution and grain coarsening. Interestingly, interface reactions of SiCp/2024Al, similar to those during fabrication, continuously occur during the solution treatment. Simultaneously, two constituents of the interface reaction layer, Al2Cu and MgAl2O4 phases, change from the original agglomerated distribution to uniform distribution and finally to segregated form again accompanied by coarsening and phase transformation of Al2Cu into Al2CuMg. Such changes of the reaction layer significantly affect the interface debonding of SiCp/matrix or SiCp cracking during tensile test, and thus, the fracture regime and mechanical properties of the composite. The achieved modified shear-lag strengthening model by considering the strengthening effect of eutectic compounds can well interpret the strengthening mechanisms of these two materials, especially the variations of each strengthening mechanism contribution with solution time and the corresponding differences between these two materials.
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000657821500001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148599]
专题	兰州理工大学
作者单位	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	Liu, G. F.,Chen, T. J.,Wang, Z. J.. Effects of solid solution treatment on microstructure and mechanical properties of SiCp/2024 Al composite: A comparison with 2024 Al alloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2021,817.
APA	Liu, G. F.,Chen, T. J.,&Wang, Z. J..(2021).Effects of solid solution treatment on microstructure and mechanical properties of SiCp/2024 Al composite: A comparison with 2024 Al alloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,817.
MLA	Liu, G. F.,et al."Effects of solid solution treatment on microstructure and mechanical properties of SiCp/2024 Al composite: A comparison with 2024 Al alloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 817(2021).