超级双相不锈钢00Cr25Ni7Mo4N固溶热处理组织的研究  

Microstructure of Super Duplex Stainless Steel 00Cr25Ni7Mo4N After Solution Treatment

作　　者：张寿禄[1,2] 袁刚[2] 韩静涛[1] 

机构地区：[1]北京科技大学,北京100083 [2]山西太钢不锈钢股份有限公司,山西太原030003

出　　处：《物理测试》2010年第3期9-11,共3页Physics Examination and Testing

摘　　要：研究了950～1300℃固溶处理对00Cr25Ni7Mo4N超级双相不锈钢组织的影响。结果表明，≤1000℃固溶处理时，钢中有。相析出，要消除热轧态的口相，固溶温度应大于1050℃；随着固溶温度升高，σ相含量增加，γ相含量下降。最佳固溶处理温度在1050～1100℃之间，此时两相比例接近1：1；随着固溶温度的提高，两相的晶粒尺寸在逐渐增大，到了1250℃晶粒明显长大。Effect of solution-treated temperature at 950～1300℃ on microstructure of super duplex stainless steel 00Cr25Ni7Mo4N has been studied. The results showed that a-phase precipitated in the steel at solution temperature ≤1000℃. In order to eliminate σ-phase in hot rolling steel, solution temperature must be held at above 1 050℃; with increasing of solution temperature, σ-phase content increased and y-phase content decreased, the optimum solution temperature was 1 050～1 100℃; and grain size of a and y-phases grew up rapidly when solution temperature was up to 1 250℃.

关 键 词：超级双相不锈钢 固溶处理 显微组织 Σ相 背散射电子图像 

分 类 号：TG161[金属学及工艺—热处理]