锻压技术

基于微观演化的304不锈钢四通件挤压温度优化

英文标题：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

单位：西京学院

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：TG376.9

出版年,卷(期):页码：2013,38(6):138-141

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 optimized initial billet temperature about 1160-1220℃ was got. Finally, the correctness of the optimized results was verified by experiments.

基金项目：

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）

参考文献：

［1］葛东升, 刘洁, 范光伟, 等. 铸态304奥氏体不锈钢热变形条件下DRX组织特征研究[J].铸造设备研究, 2008，(5): 15-20.Ge D S, Liu J, Fan G W, et al. Dynamic crystal structure characteristics of 304 austenitic stainless steel cast in heat dis-tortion[J]. Research Studies on Foundry Equipment, 2008,(5): 15-20.
［2］苏国跃, 毛萍莉. 用空心铸坯热挤压成形奥氏体不锈钢管[J]. 热加工工艺, 2002 ,(1): 25-26.Su G Y, Mao P L. Austenitic stainless steel tube made by hot extrusion of hollow cast blank[J]. Hot Working Technology, 2002, (1): 25-26.
［3］Dehghan-Manshadi, Barnett M R, Hodgson P D. Recrystallization in AISI 304 austenitic stainless steel during and after hot deformation[J]. Materials Science and Engineering A, 2008,(485): 664-672.
［4］Altenberger I, Scholtes B, Martin U, et al. Cyclic deformation and near surface microstructures of shot peened or deep rolled austenitic stainless steel AISI 304[J]. Materials Science and Engineering: A, 1999, 264(1): 1-16.
［5］赵晓东. 304奥氏体不锈钢热变形条件下DRX行为研究[D]. 太原：太原科技大学, 2009.Zhao X D. Study of DRX Under the Conditions of 304 Austenitic Stainless Steel Heat Deformation[D].Taiyuan:University of Science and Technology of Taiyuan, 2009.
［6］张斌卜, 李波, 张鸿冰. 35CrMo 钢动态再结晶过程数值模拟与试验研究[J]. 锻压技术, 2004, 29(6): 36-39.Zhang B B, Li B, Zhang H B. Value simulation and experiment study of dynamic re-crystalprocess of 35CrMo steel[J]. Forging & Stamping Technology, 2004, 29(6): 36-39.
［7］李素丽，张治民. 三通阀体零件多向主动加载成形过程数值模拟[J]. 热加工工艺，2008,37(5):69-72.Li S L，Zhang Z M. Numerical simulation of more active loading process of triple valve body[J]. Hot Working Technology, 2008,37(5) :69-72.
［8］庞玉华, 吴成, 万宏. 不锈钢复合板多道次热轧工艺模拟试验研究[J]. 锻压技术, 2006, 31(4): 20-23.Pang Y H, Wu C, Wan H. Study on mult-pass ot rolling technology of stainless clad sheet by simulation and exprement[J]. Forging ＆ Stamping Technology, 2006, 31(4): 20-23.

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