Microstructure evolution and precipitation strengthening behaviors of non-isothermal aged SiC/7xxxAl composite

doi:10.1016/j.jmst.2024.11.043

IMR OpenIR

	Microstructure evolution and precipitation strengthening behaviors of non-isothermal aged SiC/7xxxAl composite
	Zhang, R.1,2,3; Zhu, S. Z.1; Liu, Z. Y.1; Ke, Y. B.3,4; Wang, D.1; Xiao, B. L.1; Ma, Z. Y.1
通讯作者	Zhu, S. Z.(szzhu16s@imr.ac.cn) ; Ke, Y. B.(keyb@ihep.ac.cn)
	2025-08-10
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	226 页码:205-217
摘要	Non-isothermal aging (NIA) treatments have presented significant advantages in improving the comprehensive performance and aging hardening efficiency of the 70 0 0 series aluminum alloys, but there is no attention paid to their composites. This study takes a linear heating aging process as an example to reveal the precipitation behaviors of a 15 vol.% SiC/7085Al composite as well as its impact on mechanical properties using differential scanning calorimetry, transmission electron microscopy, small-angle neutron scattering, hardness measurements, and tensile testing. The results indicated the formation of GP (I, II) zones, eta' and eta precipitates in sequence, leading to the hardness and strength initially increasing and then decreasing with rising NIA temperatures. The maximums were reached at 183 degrees C, corresponding to the appearance of eta' precipitates in large quantities. Owing to the rapid temperature rise during the NIA process, the precipitates entered the coarsening and redissolution stage before they were entirely formed, resulting in reduced peak strength compared to the T6 treatment. The composite exhibited a more significant reduction in strength than the 7085Al alloy because: (i) the annihilation of vacancies suppressed the formation of GPII zones, thereby weakening their transition to eta' precipitates; (ii) quenching dislocations promoted the coarsening of precipitates. An improved NIA process, incorporating both heating and cooling aging treatments, was effectively designed with the assistance of in-situ SANS technology to address this issue, which allows for achieving strength comparable to that after the T6 treatment with only 15 % of the aging time consumption. This research fills the gap in investigating the NIA precipitation behaviors of aluminum matrix composites, providing guidance for the formulation of NIA schedules. (c) 2025 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
关键词	SiC/7 xxx Al composite Non-isothermal aging Mechanical properties Precipitation strengthening Small-angle neutron scattering
资助者	Na-tional Key R & D Program of China ; Na-tional Natural Science Foundation of China ; China Postdoctoral Science Foundation ; Natural Science Foun-dation of Liaoning Province
DOI	10.1016/j.jmst.2024.11.043
收录类别	SCI
语种	英语
资助项目	Na-tional Key R & D Program of China[2021YFA160 070 0] ; Na-tional Natural Science Foundation of China[U22A20114] ; Na-tional Natural Science Foundation of China[52322106] ; Na-tional Natural Science Foundation of China[52192595] ; Na-tional Natural Science Foundation of China[52301200] ; China Postdoctoral Science Foundation[2023M733573] ; China Postdoctoral Science Foundation[JZHKYPT-2021-01] ; Natural Science Foun-dation of Liaoning Province[2023-BS-020]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001409780600001
出版者	ELSEVIER
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/180591
专题	中国科学院金属研究所
通讯作者	Zhu, S. Z.; Ke, Y. B.
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, Shenyang 110016, Peoples R China 3.Spallat Neutron Source Sci Ctr, Dongguan 523803, Peoples R China 4.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhang, R.,Zhu, S. Z.,Liu, Z. Y.,et al. Microstructure evolution and precipitation strengthening behaviors of non-isothermal aged SiC/7xxxAl composite[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2025,226:205-217.
APA	Zhang, R..,Zhu, S. Z..,Liu, Z. Y..,Ke, Y. B..,Wang, D..,...&Ma, Z. Y..(2025).Microstructure evolution and precipitation strengthening behaviors of non-isothermal aged SiC/7xxxAl composite.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,226,205-217.
MLA	Zhang, R.,et al."Microstructure evolution and precipitation strengthening behaviors of non-isothermal aged SiC/7xxxAl composite".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 226(2025):205-217.