新型低合金化高强Mg-0.2Ce-0.2Ca合金挤压过程中的组织演变机理

李景仁, 谢东升, 张栋栋, 谢红波, 潘虎成, 任玉平, 秦高梧

Microstructure Evolution Mechanism of New Low-Alloyed High-Strength Mg-0.2Ce-0.2Ca Alloy During Extrusion

LI Jingren, XIE Dongsheng, ZHANG Dongdong, XIE Hongbo, PAN Hucheng, REN Yuping, QIN Gaowu

图2 挤压态Mg-0.2Ce-0.2Ca合金力学性能和微观组织

Fig.2 Mechanical properties and microstructure of as-extruded Mg-0.2Ce-0.2Ca alloy (DRX—dynamic recrystallization, ED—extrusion direction, IPF—inverse pole figure) (a) engineering stress-strain curve of as-extruded Mg-0.2Ce-0.2Ca alloy (b, c) distribution maps of yield stress (YS) (b) and YS increment per weight (c) vs elongation of Mg alloys based on diverse alloy system[20,21] (d) OM image (e) EBSD IPF map (f) mean DRXed grain size distribution of Mg-0.2Ce-0.2Ca alloy (Inset shows the IPF of DRXed grains) (The color strip represents intensity represented as multiple of random distribution, the same in Figures below)