热加工Mg-9Gd-4Y-0.65Mn合金的显微组织和力学性能

陈健美; 张新明; 邓运来; 肖阳; 蒋浩

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航空材料学报 ›› 2006, Vol. 26 ›› Issue (2) : 1-7.

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论文

热加工Mg-9Gd-4Y-0.65Mn合金的显微组织和力学性能

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Microstructure and Mechanical Properties of a Mg-9Gd-4Y-0.65Mn Alloy Processed by Thermo-Mechanical Treatment

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摘要

采用“熔剂法”制备了实验合金Mg-9Gd-4Y-0.65Mn,并热轧成板片。用现代分析手段研究了合金在不同热处理条件下组织结构的演变规律及其室温和高温力学性能。结果表明,实验合金经热轧后显示了很高的室温和高温(300℃)强度。变形加工的合金晶粒细化,经520℃固溶10h也不见晶粒明显长大,合金显示了良好的高温热稳定性。轧制的合金经T6处理,获得了室温下高强度和高延伸率的良好结合。变形合金在400℃温度拉伸时,表现出超塑性行为。

Abstract

Mg-9Gd-4Y-0.65Mn alloy to be investigated was prepared by "fluxes-melting method" and its hot-rolling was carried out.Microstructure evolve rule in the different threat treatment condition and mechanical properties at room temperature and at high temperature of the studied alloy were investigated by means of modern analysis methods.The results showed that the hot-rolled alloy had a high strength from room temperature to 300℃, fine grains of which did not get growth obviously, and good heat stability.A good combination of high strength and high ductility at room temperature was attained for the material hot-rolled and after T6.The processed alloy exhibited superplastic behavior while tensile testing at 400℃.

导出引用

陈健美, 张新明, 邓运来, 肖阳, 蒋浩. 热加工Mg-9Gd-4Y-0.65Mn合金的显微组织和力学性能[J]. 航空材料学报, 2006, 26(2): 1-7

CHEN Jian-mei, ZHANG Xin-ming, DENG Yun-lai, XIAO Yang, JIANG Hao. Microstructure and Mechanical Properties of a Mg-9Gd-4Y-0.65Mn Alloy Processed by Thermo-Mechanical Treatment[J]. Journal of Aeronautical Materials, 2006, 26(2): 1-7

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