新型低合金含量烘烤硬化镁合金研究进展及展望

王慧远, 孟昭元, 贾海龙, 徐新宇, 花珍铭

Research Progress and Future Prospect on New Low-Alloyed Bake-Hardenable Magnesium Alloys

WANG Huiyuan, MENG Zhaoyuan, JIA Hailong, XU Xinyu, HUA Zhenming

图6 固溶态和烘烤硬化态Mg-1.61Zn-0.57Mn-0.54Ca-0.46Al (ZMXA2110)合金TEM和APT分析及力学性能^[33]

Fig.6 TEM and APT analyses and mechanical properties of the Mg-1.61Zn-0.57Mn-0.54Ca-0.46Al (ZMXA2110) alloy^[33]
(a) electron backscattered diffraction (EBSD) image of ZMXA2110 alloy under solution treatment at 450 ^oC for 10 min (Inset is the distribution of grain size. RD—rolling direction, TD—transverse direction)
(b) strain-stress curves of solution treated and bake-hardened ZMXA2110 alloy (Inset is the Erichsen cupping test result of the solution treated ZMXA2110 alloy. IE—index Erichsen)
(c) tensile yield strength and IE value of ZMXA2110 alloy and other Mg sheet alloys
(d-f) TEM (d) and high resolution TEM (HRTEM) (f) images and SAED (e) pattern of bake-hardened ZMXA2110 sample which were obtain along the [10

\bar{1}

0]_Mg zone axis
(g-i) atom maps (g), APT map of Mg and iso-concentration surface of 1.0%Ca (atomic fraction) (in cyan) (h), and concentration proxigram histogram corresponding to the iso-concentration surface in Fig.6h (i)