在Gleebe-1500热力模拟机上,采用单道次热压缩实验,研究了不同变形速率和不同变形温度下弹簧钢50CrV4的动态再结晶行为.结果表明:钢种在较高温度和较低应变速率下,动态再结晶更容易发生.采用回归法计算出动态再结晶的变形激活能和应变指数分别为378.612 kJ/mol和4.92,由此建立动态再结晶峰值应变、稳态应变和临界应变模型.
参考文献
| [1] | 李永德,柳洋波,杨振国,李广义,李守新,惠卫军,翁宇庆.汽车用高强度弹簧钢50CrV4的超高周疲劳性能的研究[C].第七届全国MTS材料试验学术会议论文集,2007:197-199,202. |
| [2] | 姜英禹.50CrV4弹簧扁钢的开发[J].新疆钢铁,2012(01):1-5. |
| [3] | 杨林,余驰斌,鲍思前,丁贝,余冲,程剑,毛新平.50CrV4脱碳分析及其对淬硬性的影响[J].钢铁钒钛,2013(02):88-92. |
| [4] | 余冲,赵刚,鲍思前,毛新平.50CrV4奥氏体变形流动应力的研究[J].热加工工艺,2013(02):20-23. |
| [5] | McQueen H J;Yue S;Ryan N D et al.Hot working characteristics of steels in austenitic state[J].Metal Process Technology,1995,53:293-310. |
| [6] | Baragar D L .The high temperature and high strain rate behavior of a plain carbon and an HSLA steel[J].Mechanics Work Technology,1987,14:295-307. |
| [7] | 高建忠,郭斌,徐进桥,郭爱民,王青峰.X120管线钢热变形行为及动态再结晶晶粒的演变规律[J].上海金属,2011(03):6-10,18. |
| [8] | 曹建春,周晓龙,何寒,陈文,刘清友,雍岐龙.热变形对高铌低碳钢奥氏体→铁素体等温转变影响研究[J].钢铁,2010(10):70-74. |
| [9] | I.P. Pinheiro;R. Barbosa;P.R. Cetlin .The relevance of dynamic recrystallization in the hot deformation of IF steel at high strain rates[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2007(1/2):90-93. |
| [10] | Sellars C M;Tegart W J M .Relationship between strength and structure in deformation at elevated temperatures[J].Memoir of the Science Revista of Metal,1966,63:731-745. |
| [11] | Laasraoui A;Jonas J J .Recrystallization of austenite after deformation at high temperature and strain rates-analysis and modelling[J].Metallurgical Transactions A,1991,22A:151-160. |
| [12] | Sellars C M;Whiteman J A .Recrystallization and grain growth in hot rolling[J].Metal Science Journal,1979,13:187-194. |
| [13] | Senuma T;Suehiro M;Yada H .Mathematical models for predicting microstructural evolution and mechanical properties of hot strips[J].Journal of the Iron and Steel Institute of Japan (International),1992,32(03):423-432. |
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