Effect of annealing on microstructure evolution and age-hardening behavior of dilute Mg–Al–Ca–Mn alloy

• DOI: 10.1016/j.jmrt.2022.03.091
• Publication Date: 2022-03-19T00:37:55Z
• Authors: J. Zuo; T. Nakata; C. Xu; Y.P. Xia; H.L. Shi; G.S. Wang; G.Z. Tang; G.H. Fan; S. Kamado; L. Geng
• Keywords: Elongation; Precipitation hardening; Recrystallization (geology); Hardening (computing)

Microstructure evolution and mechanical properties of the as-drawn dilute Mg-0.8Al-0.1Ca-0.6Mn (wt. %) alloy wires during annealing peak-aging treatment were investigated in this paper. The results show that high density nano-sized Al–Mn precipitates strongly hindered grain boundary migration to restrict growth under 300 °C 400 °C, while was obvious uniformity recrystallization size increased due partial dissolution at 500 °C. In addition, there a preference grains with (0001) <2 1¯1¯ 0> orientation, which closely associated texture changes. annealed for 10min exhibits remarkable age-hardening response both tensile yield strength elongation failure improved simultaneously after treatment, mainly attributed monolayered Guinier-Preston (G.P.) zones planar Al2Ca precipitates.