通过挤压态42CrMo钢多组试样的热压缩实验获得应变速率为0.01～10 s-1、变形温度为1123 ～1148 K条件下的真应力-应变数据,以此作为计算应变速率敏感指数(m值)、能量耗散因子(η值)和失稳判据(ξ值)三重判据的底层材料数据.利用三重判据构建的加工图对挤压态42CrMo高强度钢的热成形过程进行分析,得到了挤压态42CrMo强度钢在成型过程中的稳定区域和流变失稳区.结果表明:42CrMo钢的最优变形热力参数处于具有较高η值和较高ξ值的区域内.
参考文献
| [1] | Quan, G.;Tong, Y.;Luo, G.;Zhou, J. .A characterization for the flow behavior of 42CrMo steel[J].Computational Materials Science,2010(1):167-171. |
| [2] | Lin Y C;Chen X M .A review of experimental results and constitutive descriptions for metals in hot working[J].Materials & Design,2011,32(04):1733-1759. |
| [3] | Lin YC;Chen MS;Zhong J .Numerical simulation for stress/strain distribution and microstructural evolution in 42CrMo steel during hot upsetting process[J].Computational Materials Science,2008(4):1117-1122. |
| [4] | Lin YC;Zhang J;Zhong J .Application of neural networks to predict the elevated temperature flow behavior of a low alloy steel[J].Computational Materials Science,2008(4):752-758. |
| [5] | Ko D C;Kim B M;Choi J C .Prediction of surface-fracture initiation in the axisymmetric extrusion and simple upsetting of an aluminum alloy[J].Journal of Materials Processing Technology,1996,62(1-3):166-174. |
| [6] | Srinivasan N;Prasad YVRK;Rao PR .Hot deformation behaviour of Mg-3Al alloy - A study using processing map[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2008(1/2):146-156. |
| [7] | Y.V.R.K. Prasad;K.P. Rao .Processing maps for hot deformation of rolled AZ31 magnesium alloy plate: Anisotropy of hot workability[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2008(1/2):316-327. |
| [8] | 曾卫东,周义刚,周军,俞汉清,张学敏,徐斌.加工图理论研究进展[J].稀有金属材料与工程,2006(05):673-677. |
| [9] | 李庆波,周海涛,蒋永峰,赵仲恺,刘志超,温盛发.加工图的理论研究现状与展望[J].有色冶金设计与研究,2009(04):1-6. |
| [10] | Prasad YVRK;Rao KP .Processing maps and rate controlling mechanisms of hot deformation of electrolytic tough pitch copper in the temperature range 300-950 degrees C[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2005(1/2):141-150. |
| [11] | Prasad Y V R K;Gegel H L;Doraivelu S M et al.Modeling dynamic material behavior in hot deformation forging of Ti-6242[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1983,15(10):1883-1892. |
| [12] | H. Y. Kim;H. C. Kwon;H. W. Lee;Y. T. Im;S. M. Byon;H. D. Park .Processing map approach for surface defect prediction in the hot bar rolling[J].Journal of Materials Processing Technology,2008(1/3):70-80. |
| [13] | TAN Cheng-wen,XU Shan-na,WANG Lu,CHEN Zhi-yong,WANG Fu-chi,CAI Hong-nian.Effect of temperature on mechanical behavior of AZ31 magnesium alloy[J].中国有色金属学会会刊(英文版),2007(01):41-45. |
| [14] | 陈志永,张新明,刘楚明,李赛毅,周卓平,杨扬.面心立方金属{111}〈110〉滑移和{111}〈112〉孪生平面共生变形的Bishop-Hill分析[J].金属学报,2000(11):1121-1126. |
| [15] | Y. V. R. K. Prasad .Processing Maps: A Status Report[J].Journal of Materials Engineering and Performance,2003(6):638-645. |
| [16] | S. Ramanathan;R. Karthikeyan;G. Ganasen .Development of processing maps for 2124Al/SiC_p composites[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2006(1/2):321-325. |
| [17] | 董海峰,蔡大勇,王玉辉,杨庆祥,廖波.Cr微合金化低碳钢热变形行为[J].材料热处理学报,2009(06):47-50. |
| [18] | Momeni, A.;Dehghani, K. .Characterization of hot deformation behavior of 410 martensitic stainless steel using constitutive equations and processing maps[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2010(21/22):5467-5473. |
| [19] | 蔺永诚,陈明松,钟掘.形变温度对42CrMo钢塑性成形与动态再结晶的影响[J].材料热处理学报,2009(01):70-74. |
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