对铸态奥氏体不锈钢的等径角挤压变形（ECAP）试样进行了高温固溶处理，并与锻造试样+固溶处理后的组织、性能进行了对比，研究表明：室、高温ECAP试样在1150 ℃固溶处理后均可得到完全再结晶组织；增加ECAP道次对完全再结晶后的晶粒尺寸影响不大，但略微增加晶粒尺寸的均匀性；铸态奥氏体不锈钢采用ECAP+固溶处理新工艺后，可以获得与锻造+固溶处理工艺类似的组织、力学性能，有可能实现铸锭的开坯。
High temperature solution treatment of ECAPed samples of austenitic stainless steel ingot was studied experimentally , and both microstructure and properties of ECAP + solution samples were compared with that of forging + solid solution samples, the results show that full recrystallized microstructure of samples ECAPed at room and elevated temperature was obtained after solid solution at 1150 ℃.The increase of ECAP pass number has no effect on grain size, however homogeneity can be improved.After ECAP + solution treatment, both microstructure and properties of cast austenitic stainless steel samples are as same as that of forging + solution ones, showing that ECAP is a suitable method to replace blooming.
参考文献
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%