Transactions of Materials and Heat Treatment

Title：Research on high temperature rheological behavior and hot processing map for Ti-5Al-5Mo-5V-1Cr-1Fe titanium alloy

Authors： Ding Rongrong Zhou Jie Li Xin Zhang Jiansheng Lu Shun

Unit： Chongqing University Chongqing Jiepin Science and Technology Incorporated Company

KeyWords： Ti-5Al-5Mo-5V-1Cr-1Fe titanium alloy rheological behavior rheological stress constitutive equation hot processing map

ClassificationCode：TG146.2+3

year,vol(issue):pagenumber：2019,44(3):133-139

Abstract：

Hot compression tests of Ti-5Al-5Mo-5V-1Cr-1Fe titanium alloy samples with temperature 750-950 ℃ and strain rate 0.01-10 s-1 were carried out by Gleeble-3500 thermal simulator, and the constitutive equation based on Arrhhenius model was established by material parameters obtained from true stress-strain curve.Then, the accuracy of the equation was verified by comparing the calculated rheological stress with the measured stress-strain curve. Based on the machining graph theory of dynamic material model, the hot processing maps of Ti-5Al-5Mo-5V-1Cr-1Fe titanium alloy with strains of 0.1, 0.3, 0.5 and 0.7 were constructed respectively. The results show that with the increase of strain, the region of rheological instability is concentrated in the region of medium-low temperature and high strain rate. When the strain is small (0.1-0.3), the safety zone is mainly concentrated in the low strain rate zone at medium temperature(840-900 ℃，< 0.4 s-1) and the high strain rate zone at high temperature (910-950 ℃，>1 s-1). When the strain is large (0.3-0.7), the safety zone is mainly concentrated in the low strain rate zone (780-950 ℃，<0.3 s-1) and the high strain rate zone at high temperature (910-950 ℃，>1 s-1). Therefore, the safe hot working area of Ti-5Al-5Mo-5V-1Cr-1Fe titanium alloy during high temperature deformation is medium temperature (840-900 ℃) and low strain rate (0.01-0.3 s-1).

Funds：

国家自然科学基金面上项目（51575067）；重庆市基础与前沿研究计划项目（cstc2015jcyjA70011）

丁蓉蓉(1993-)，女，硕士研究生，E-mail：dingrongrongcqu@163.com；通讯作者：周杰（1965-），男，博士，博士生导师，教授，E-mail：zhoujie@cqu.edu.cn

Reference：

［1］刘继雄,杨奇,郭志军,等.Ti-Al-Mo-V-Cr-Fe系钛合金综述
［J］.中国钛业,2014，(3):27-31.

Liu J X，Yang Q，Guo Z J，et al. Overview of Ti-Al-Mo-V-Cr-Fe alloys
［J］. China Titanium Industry,2014，(3):27-31.

［2］刘俊雄,吴向东,万敏,等.基于修正的Arrhenius方程钛合金高温本构方程研究
［J］.材料科学与工艺,2015,23(3):7-11.

Liu J X, Wu X D, Wan M, et al. Study on hot deformation behavior of titanium alloy by modified Arrhenius equation
［J］. Materials Science and Technology,2015,23(3):7-11.

［3］韩栋,张永强,雷文光,等.常见的钛合金热变形本构模型分析及未来发展
［J］.钛工业进展,2014,31(5):1-5.

Han D，Zhang Y Q，Lei W G，et al. Analysis and development of common constitutive models for hot deformation of titanium alloys
［J］. Titanium Industry Progress, 2014,31(5):1-5.

［4］贾宝华,刘思勇,李革.国内TC18钛合金本构关系研究进展
［J］.钛工业进展,2017,34(4):9-12.

Jia B H, Liu S Y, Li G. Research progress on constitutive relation of TC18 titanium alloy in China
［J］. Titanium Industry Progress, 2017, 34(4):9-12.

［5］Prasad Y V R K, Gegel H L , Doraivelu S M, et al. Modeling of dynamic material behavior in hot deformation: Forging of Ti-6242
［J］. Metallurgical Transactions A, 1984, 15 (10): 1883-1892.

［6］祖利国,张晓泳,李超,等.Ti-5Al-5Mo-5V-1Cr-1Fe合金热加工图及其组织演变
［J］.中南大学学报：自然科学版， 2012, 43(8): 2943-2950.

Zu L G, Zhang X Y, Li C, et al. Hot processing map and microstructural revolution of Ti-5Al-5Mo-5V-1Cr-1Fe alloy
［J］. Journal of Central South University:Science and Technology，2012,43(8):2943-2950.

［7］曾卫东, 周义刚, 周军,等. 加工图理论研究进展
［J］. 稀有金属材料与工程, 2006, 35(5):673-677.

Zeng W D, Zhou Y G, Zhou J, et al. Recent development of processing map theory
［J］. Rare Metal Materials and Engineering, 2006, 35(5):673-677.

［8］李庆波, 周海涛, 蒋永峰,等. 加工图的理论研究现状与展望
［J］. 有色冶金设计与研究, 2009, 30(4):1-6.

Li Q B, Zhou H T, Jiang Y F, et al. Research status quo and prospect of the theory of shop drawing
［J］. Nonferrous Metals Engineering & Research, 2009, 30(4):1-6.

［9］权国政, 王阳, 张艳伟,等. 基于DMM加工图的Ti-6Al-2Zr-1Mo-1V合金热塑性变形参数优化识别
［J］. 功能材料, 2011，(12):2301-2306.

Quan G Z, Wang Y, Zhang Y W, et al. Optimization identification of thermoplastic deformation parameters of Ti-6Al-2Zr-1Mo-1V alloy based on DMM processing map
［J］. Diagram Functional Materials, 2011，(12):2301-2306.

［10］权国政, 王阳, 周杰,等. TA15应变速率敏感指数对变形温度、应变和应变速率的响应规律
［J］. 热加工工艺, 2011, 40(20):48-49.

Quan G Z, Wang Y, Zhou J, et al. Response rule of strain rate sensitivity of TA15 to deformation temperature, strain and strain rate
［J］. Hot Working Technology, 2011, 40(20):48-49.

［11］黄顺喆,厉勇,王春旭,等.Prasad与Murthy流变失稳准则下9310钢热加工图的建立与分析
［J］.钢铁,2014,49(7):107-113.

Huang S Z, Li Y, Wang C X, et al. Establishment and analysis of processing map for 9310 steel under flow under flow instability criteria of Prasad and Murthy.
［J］.Iron and Steel,2014,49(7):107-113.

［12］王臻,徐效文.锻态镍钛合金的热变形行为
［J］.锻压技术,2018,43(10):167-175.

Wang Z,Xu X W. Hot deformation behavior of forged Ni-Ti alloy
［J］.Forging & Stamping Technology,2018,43(10):

167-175.

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