00Cr22Ni13Mn5Mo2N奥氏体不锈钢的精轧工艺

为了研究00Cr22Ni13Mn5Mo2N奥氏体不锈钢的精轧工艺,使用Gleeble-3800热模拟试验机模拟00Cr22Ni13Mn5Mo2N奥氏体不锈钢在变形温度为800、850、900、950 ℃,变形量为40%、50%、60%,应变速率为50 s^-1条件下的热压缩变形行为,并对其进行1080、1120、1160 ℃的固溶热处理,观察固溶热处理前后的组织形貌。结果表明:在800~950 ℃热压缩温度下,随变形量增大,再结晶越完全,再结晶平均晶粒尺寸越细小;经固溶处理1 h后,静态再结晶就越充分。在40%~60%变形量下,随热压缩温度升高,再结晶越完全,再结晶平均晶粒尺寸越大。热压缩变形试验钢随固溶处理温度升高,再结晶平均晶粒尺寸越大。00Cr22Ni13Mn5Mo2N奥氏体不锈钢的精轧最佳轧制温度为800 ℃,压缩变形量为60%,固溶温度为1080 ℃。

Finishing rolling process of 00Cr22Ni13Mn5Mo2N austenitic stainless steel

In order to study the finishing rolling process of 00Cr22Ni13Mn5Mo2N austenitic stainless steel, the hot compression deformation behavior of 00Cr22Ni13Mn5Mo2N austenitic stainless steel was simulated by a Gleeble-3800 thermal simulator, with the deformation temperatures 800, 850, 900 and 950 ℃, the deformation 40%, 50%, 60%, and the strain rate 50 s^-1. Then the structural morphology before and after the solid solution heat treatment at 1080, 1120 and 1160 ℃ was observed. The results show that the recrystallization is more complete and the average recrystallization grain size is smaller with the increase of deformation at 800-950 ℃. After solution treatment for 1 h, the static recrystallization becomes more sufficient. With the increase of thermal deformation temperature under the deformation of 40%-60%, the more complete the recrystallization is, the larger the average recrystallization grain size is. The average recrystallization grain size of the steel increases with the increase of solution treatment temperature. The optimum processing of 00Cr22Ni13Mn5Mo2N austenitic stainless steel is the finishing rolling temperature 800 ℃, the compression deformation 60%, and the solution treatment temperature 1080 ℃.