Effects of solution temperatures on microstructures and mechanical properties of B4C/7A04Al composites: A comparison study with 7A04Al alloys

doi:10.1016/j.msea.2023.145899

IMR OpenIR

	Effects of solution temperatures on microstructures and mechanical properties of B4C/7A04Al composites: A comparison study with 7A04Al alloys
	Chen, Y. T.1,2; Zhu, S. Z.1; Luo, H. J.3; Wang, D.1; Xiao, B. L.1; Ma, Z. Y.1
通讯作者	Zhu, S. Z.(szzhu16s@imr.ac.cn) ; Wang, D.(Dongwang@imr.ac.cn)
	2024
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	890 页码:12
摘要	To prepare particle-reinforced aluminum matrix composites with ultra-high strength, high-strength 7xxx Al alloys are commonly employed as matrices. Heat treatment plays a crucial role in enhancing the mechanical properties of the alloys and their composites, but the influence of solution temperatures on composites based on 7xxxAl alloys remains unexplored. In this study, the effects of solution temperatures on the microstructures and mechanical properties of B4C/7A04Al composites fabricated via powder metallurgy (PM) technology were investigated, as well as those of 7A04Al alloys for comparison. Before solution treatments, the prominent second phases in the composite were MgZn2 phases, while those in the 7A04Al alloy consisted of MgZn2 and Al2CuMg phases. At lower solution temperature (420 degrees C), MgZn2 phases dissolved completely, whereas Al2CuMg phases persisted. Al2CuMg phases dissolved at 450 degrees C, and thus the 7A04Al alloy obtained the optimum strength and elongation. Further elevating the solution temperature caused abnormal grain growth (AGG) in the 7A04Al alloy, leading to a deterioration of strength and plasticity. In contrast, at various solution temperatures, the composite exhibited stability in grain size, which could be attributed to the pinning effects of B4C particles and Mg(Al)B2 phases, the reaction products between the boron impurity and the Al matrix. However, at higher solution temperatures (510 degrees C and 600 degrees C), the segregation of Mg and O around B4C particles was aggravated, and thus the elongation of the composite deteriorated. Interestingly, the strength remained relatively unaffected due to the strengthening effects of Mg(Al)B2 phases. The results indicate that the composite exhibited a broad range of solution temperature with comparable strength and elongation across a temperature range of 420 degrees C-470 degrees C. But for the 7A04Al alloy, the optimal solution temperature is 450 degrees C.
关键词	Aluminum matrix composites Solution temperature Powder metallurgy Microstructure Mechanical properties
资助者	National Key R & D Program of China ; National Natural Science Foundation of China ; IMR Innovation Fund ; Natural Science Foundation of Liaoning Province ; Liaoning Revitalization Talents Program
DOI	10.1016/j.msea.2023.145899
收录类别	SCI
语种	英语
资助项目	National Key R & D Program of China[2022YFB3707403] ; National Natural Science Foundation of China[U22A20114] ; National Natural Science Foundation of China[52301200] ; IMR Innovation Fund[2023-PY14] ; Natural Science Foundation of Liaoning Province[2023 -BS -020] ; Liaoning Revitalization Talents Program[XLYC2007009]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001164356900001
出版者	ELSEVIER SCIENCE SA
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/184222
专题	中国科学院金属研究所
通讯作者	Zhu, S. Z.; Wang, D.
作者单位	1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China 3.Aerosp Syst Engn Shanghai, 3888 Yuanjiang Rd, Shanghai 201109, Peoples R China
推荐引用方式 GB/T 7714	Chen, Y. T.,Zhu, S. Z.,Luo, H. J.,et al. Effects of solution temperatures on microstructures and mechanical properties of B4C/7A04Al composites: A comparison study with 7A04Al alloys[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2024,890:12.
APA	Chen, Y. T.,Zhu, S. Z.,Luo, H. J.,Wang, D.,Xiao, B. L.,&Ma, Z. Y..(2024).Effects of solution temperatures on microstructures and mechanical properties of B4C/7A04Al composites: A comparison study with 7A04Al alloys.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,890,12.
MLA	Chen, Y. T.,et al."Effects of solution temperatures on microstructures and mechanical properties of B4C/7A04Al composites: A comparison study with 7A04Al alloys".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 890(2024):12.