Mn18Cr18N钢热成形晶粒变化的模拟研究

• 作 者: 陈慧琴 刘建生 郭会光
• 机 构: 太原重型机械学院压力加工系
• 出 处: 金属学报
• 发表日期: 1999年01期
• 关键词: 热成形 Mn18Cr18N 晶粒长大 动态再结晶 晶粒度 静态再结晶 护环 计算机模拟 匀化 热耦合

运用热耦合刚粘塑性有限元微观模拟技术，对Ｍｎ１８Ｃｒ１８Ｎ钢护环扩挤复合热成形和冷却过程进行了计算机模拟．得到了热力参数的分布状况和内部晶粒度变化的规律，当空冷约２１０ｓ时护环内晶粒可达细匀化．这为实现护环的控制锻造与控制冷却，进而控制产品质量提供了理论依据

By using the thermo-coupled rigid-viscoplastic finite element simulation technology, the computer simulation of the expansion and extrusion composite hot forming and cooling process of Mn18Cr18N steel retaining ring was carried out. The distribution of thermal parameters and the regularity of internal grain size change were obtained. When the air cooling is about 210s, the grains in the retaining ring can be finely homogenized. This provides a theoretical basis for the realization of guard ring forging control and cooling control, thus controlling product quality