锻压技术

09CuPTiRe钢二道次热变形行为研究

英文标题：Study on hot deformation behavior of 09CuPTiRe steel in second pass

作者：杨意萍关小军

单位：山东工业职业学院山东大学

分类号：TG111.7

出版年,卷(期):页码：2011,36(4):130-133

摘要：

基于09CuPTiRe钢高温双道次热模拟实验，采用lnθε关系曲线确定了二道次变形条件下的临界应变，探讨了变形温度、变形速度等对二道次热变形行为的影响。结果表明：一道次动态再结晶后的二道次，其热变形行为不同于单道次；随着变形温度的降低和应变速率的提高，二道次动态再结晶的临界应变减小。研究结果与二道次数值模拟反映的特征相符。

Based on double thermodynamics simulation research of 09CuPTiRe steel, the critical strain of second pass was obtained by using ln θε curves. Effects of hot deformation temperature and strain rate on behavior of second pass were discussed. The results show that the hot deformation behavior of second pass after dynamic recrystallization of first pass is different from that one in single pass. The critical strain of second pass decreases with decreasing the deforming temperature and increasing the strain rate. These results agree well with FEM simulation results of second pass.

基金项目：

参考文献：

[1] 关小军，李阳，周家娟，等.热变形制度对09CuPTiRe 钢热变形组织行为的影响[J].钢铁，2004，39(3)：46-49.

[2] 邹菲菲，关小军，韩振强,等.09CuPTiRe钢动态再结晶的热模拟实验与有限元模拟[J].山东大学学报:工学版，2006，36（5）：17-20.

[3] Prasad G V, Goerdeler M, Gottstein G. Work hardening model based on multiple dislocation densities[J].Materials Science and Engineering(A), 2005, 400401: 231-233.

[4] Rollett A D, Kocks U F. A review of the stages of work hardening[J]. Solid State Phenomena, 1993, 35-36：1-18.

[5] Gottstein G, Brunger E, Frommert M, et a1. Prediction of the critical conditions for dynamic recrystallization in metals[J]. Zeitschrift fur Metallkunde, 2003, 94(5): 628-635.

[6] Poliak E I, Jonas J J. Critical strain for dynamic recrystallization in variable strain rate hot deformation[J].ISIJ International, 2003, 43(5): 692-700.

[7] Najafizadeh A, Jonas J J. Predicting the critical stress for initiation of dynamic recrystallization[J]. ISIJ International, 2006, 46(11): 1679-1684.

[8] Laasraoui A, Jonas J J. Recrystallization of austenite after deformation at high temperatures and strain rates analysis and modeling [J]. Metallurgical Transactions, 1991, 22A(1):151-160.

[9] Poliak E I, Jonas J J. A oneparameter approach to determining the critical conditions for the initiation of dynamic recrystallization[J]. Acta Materialia, 1996，44(1)：127-136.

[10] 侯大华，徐有容，罗德信.10Ti多道次累积应变流变应力模型[J].冶金丛刊，1994，（6）：13-19.

[11] 韩振强.基于Monte Carlo方法的金属动态再结晶组织模拟[D].济南：山东大学，2007.

[12] 王有铭，李曼云，韦光.钢材的控制轧制与控制冷却[M]. 北京：冶金工业出版社，1995.

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