Effect of interrupted ageing treatment on the mechanical properties and intergranular corrosion behavior of Al-Mg-Si alloys | Zendy

Xuehong Xu | Zendy; Yunlai Deng | Zendy; Shuiqing Chi | Zendy; Xiaobin Guo | Zendy

Open Access

Effect of interrupted ageing treatment on the mechanical properties and intergranular corrosion behavior of Al-Mg-Si alloys

Author(s) -

Xuehong Xu,

Yunlai Deng,

Shuiqing Chi,

Xiaobin Guo

Publication year - 2019

Publication title -

journal of materials research and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.832

H-Index - 44

eISSN - 2214-0697

pISSN - 2238-7854

DOI - 10.1016/j.jmrt.2019.10.050

Subject(s) - materials science , microstructure , intergranular corrosion , alloy , grain boundary , metallurgy , elongation , precipitation , corrosion , ageing , phase (matter) , composite material , ultimate tensile strength , physics , genetics , chemistry , organic chemistry , biology , meteorology

In this study, the influence of interrupted ageing treatment on the mechanical properties and intergranular corrosion (IGC) behavior of Al-Mg-Si alloy was investigated. The results show that mechanical properties (strength and elongation) and IGC resistance of the interrupted ageing T6I6 alloys are enhanced simultaneously as compared to the T6 alloys. After treated by the interrupted ageing T6I6, the microstructure of the studied alloy consists of small size and high quantity density β″ precipitated phase in the Al matrix, discontinuously distributed grain boundary precipitates (GBPs) and narrow precipitation free zones (PFZs). The increment of mechanical properties and the improvement of IGC resistance are attributed to the type microstructures in the Al-Mg-Si alloy.

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