Influence of high-temperature and short-time solution treatment on microstructure and properties of Al−Mg−Zn−Ag alloy

IF 4.7 1区材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING

Transactions of Nonferrous Metals Society of China Pub Date : 2025-02-01 DOI:10.1016/S1003-6326(24)66685-9

Cheng GUO , Yi-fei CHEN , Yu-qin GUO , Huan WANG , Hai-tao ZHANG , Jing-qi CHEN , Zi-bin WU , Xin-gang LIU , Hiromi NAGAUMI

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Abstract

High-temperature and short-time (HTST) solution heat treatment combined with non-isothermal aging (NIA) was employed to regulate the microstructure and properties of Al−4.5Mg−2.0Zn−0.3Ag alloy. Results indicate that HTST solution heat treatment can not only retain partial deformation dislocations, but inhibit the recrystallization behavior and increase the proportion of low-angle grain boundaries (LAGBs). In the subsequent NIA process, HTST solution heat treatment combined with NIA is instrumental in restraining the degradation of dislocations and promoting precipitation of nano-scale T’-Mg₃₂(Al,Zn,Ag)₄₉ phase, which improves the strength of the alloy greatly. In addition, a higher fraction of LAGBs and the discontinuous distribution of grain boundary precipitates caused by this novel technology meliorate the corrosion resistance of Al−4.5Mg−2.0Zn−0.3Ag alloy.

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来源期刊

Transactions of Nonferrous Metals Society of China 工程技术-冶金工程

CiteScore

7.40

自引率

17.80%

发文量

8456

审稿时长

3.6 months

期刊介绍： The Transactions of Nonferrous Metals Society of China (Trans. Nonferrous Met. Soc. China), founded in 1991 and sponsored by The Nonferrous Metals Society of China, is published monthly now and mainly contains reports of original research which reflect the new progresses in the field of nonferrous metals science and technology, including mineral processing, extraction metallurgy, metallic materials and heat treatments, metal working, physical metallurgy, powder metallurgy, with the emphasis on fundamental science. It is the unique preeminent publication in English for scientists, engineers, under/post-graduates on the field of nonferrous metals industry. This journal is covered by many famous abstract/index systems and databases such as SCI Expanded, Ei Compendex Plus, INSPEC, CA, METADEX, AJ and JICST.