1) σ-phase embrittlement
σ相脆化
2) σ phase strengthening
σ相强化
3) solid state embrittlement
固相脆化
4) σ phase hardening
σ相析出硬化
5) σ phase
σ相
1.
The results show that the austenite matrix is strengthened by the plentiful precipitation of small intersectant σ phase with high hardness during aging treatment.
研究了时效处理对σ相强化奥氏体不锈钢组织和腐蚀磨损特性的影响。
2.
The formation of σ phase due to aging tre.
31 0不锈钢于 70 0℃ ,1 0 0 0 0h时效后在晶界大量析出σ相 ,使晶界附近贫Cr,降低了其抗硫腐蚀性
3.
It is shown that the dense cracks in magnesium reduction jar made of ZG40Cr28Ni16 are caused by the segregation of σ phase.
介绍一种炼镁还原罐的专利结构 ,简介炼镁还原罐的工作环境和常用材质 ,指出ZG40Cr2 8Ni16材质炼镁还原罐产生密集性裂纹的原因是σ相的析出 ,进而提出一种新的炼镁还原罐结构。
6) sigma phase
σ相
1.
The delta phase precipitation at the grain boundaries is noticeably suppressed due to the increasing Al addition,and some harmful phases including Laves phase,M_7C_3 carbide and sigma phase are formed intergranularly.
结果表明,提高Al含量可抑制晶界δ相的析出,促进晶界Laves相、M_7C_3相和σ相等有害相的析出;随着Al含量的提高,GH4169合金的室温冲击性能明显降低,冲击断口由穿晶型转变为沿晶型。
2.
The CCT curve of 00Cr25Ni7Mo4N super duplex stainless steel was obtained by thermal dilatometry,and the influence of cooling rate on precipitated sigma phase was studied by combining with metallographic observation,micro hardness measurement and XRD.
结果表明,00Cr25Ni7Mo4N双相不锈钢热处理或热加工温度应控制在1 050℃以上;冷却速率越小,σ相析出量越多,显微硬度也越高;钢在冷却过程中要以大于4 800℃/h的冷却速率通过600~1 000℃区域,从而避免σ脆性相的析出。
补充资料：脆好
1.犹柔弱。
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