基于微观演化的304不锈钢四通件挤压温度优化  

Optimization of initial billet temperature in extrusion process for 304 austenitic stainless steel four valve body based on microstructure evolution

作　　者：赵金国[1] 

机构地区：[1]西京学院机电工程系,陕西西安710123

出　　处：《锻压技术》2013年第6期138-141,共4页Forging & Stamping Technology

基　　金：陕西省教改重点项目:机制专业创新人才培养的教学内容更新与课程体系改革研究(11BY99)

摘　　要：基于Deform-3D刚塑形有限元模拟，研究揭示了304奥氏体不锈钢四通件挤压成形工艺过程中坯料初始温度（Tinitial）对于坯料金属动态再结晶（DRX）体积分数、平均晶粒尺寸（Daverage）的影响规律，并以此对Tinitial进行优化，从而细化晶粒、改善金属组织，获得了优化的Tinitial≈1160-1220℃，最后通过实验验证了优化结果的正确性。The influence laws of initial billet temperature on the DRX volume fraction and the average grain size （Daverage） during 304 austenitic stainless steel four valve body extrusion process were investigated based on Deform-3D software. The initial billet temperature was optimized to obtain the fine grain and improved structure, and the opti- mized initial billet temperature about 1160 - 1220 ℃ was got. Finally, the correctness of the optimized results was veri- fied by experiments.

关 键 词：304奥氏体不锈钢 坯料初始温度 四通件 动态再结晶 

分 类 号：TG379[金属学及工艺—金属压力加工]