采用非自耗真空电弧熔炼方法制备Zr-0.4Fe-1.0Cr-xMo (x=0,0.2,0.4,0.6)合金材料,研究了该锆合金在室温下及350℃下的拉伸性能.Zr-0.4Fe-1.0Cr-xMo合金的强度高于Zr-1.0Sn-0.3Nb-0.3Fe-0.1Cr合金.室温下,合金的抗拉伸强度随着Mo含量的增加而降低,而350℃下,合金的抗拉伸强度随着Mo含量的增加而升高,Mo对Zr-0.4Fe-l.0Cr合金有明显的高温强化作用.形变强化指数n值随Mo含量的变化趋势与屈服强度的变化趋势相反.Mo含量对Zr-0.4Fe-l.0Cr-xMo合金拉伸性能的影响与Mo的添加引起第二相粒子特征的变化密切相关.
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