Optimization of a Solution Treatment in the Al-Cu-Mg-Ag Alloy via a Microstructural Investigation

Metals

Jae-Hong Shin¹  Kyou-Hyun Kim¹  Leeseung Kang¹  Hyeongsub So¹  Chanuk Jeong² 

[1] Korea-Russia Innovation Center, Korea Institute of Industrial Technology, Incheon 22004, Korea;R&D Center, Dongyang A.K Korea Co., Ltd., Sejong 30067, Korea;

关键词: aluminum alloy;    mechanical properties;    microstructural evolution;    solutionization;   

DOI  :  10.3390/met12010066

来源: DOAJ

【 摘 要 】

We investigated the effect of solution temperature (T_sol. = 440–530 °C) on the mechanical properties of the Al–3.4Cu–0.34Mg–0.3Mn–0.17Ag alloy, finding that the investigated Al alloy showed the highest mechanical strength of σ_UTS = ~329 MPa at a T_sol. value of 470 °C. The microstructural investigation demonstrates that the mechanical properties for different T_sol. values stem from grain growth, precipitation hardening, and the formation of large particles at the grain boundaries. On the basis of T_sol. = 470 °C, the effect of each microstructural evolution is significantly different on the mechanical properties. In this study, the relationships between the microstructural evolution and the mechanical properties were investigated with respect to different values of T_sol.

【 授权许可】

Unknown