Research on Strain Compensation Constitutive Equation and Hot Processing Map of Equiaxed Fine Grain TC4 Alloy
YI Zongxin1, LI Xiaoqiang1, PAN Cunliang1, SHEN Zhengzhang2
1 National Engineering Research Center for Near-Net-Shape for Metallic Materials, South China University of Technology, Guangzhou 510640, China 2 Aerospace Research Institute of Materials & Processing Technology, Beijing 100076, China
Abstract: The deformation behavior of equiaxed fine grain TC4 alloy under deformation temperature of 800—950 ℃ and strain rate of 0.01—10 s-1 was studied by hot compression experiment, and the Arrhenius constitutive equation and hot processing map were established. Based on the true stress-strain curves obtained by experiment, the strain compensation is modified to the constitutive equation. The results show that the true stress decreases with the increase of temperature and the decrease of strain rate. The correlation coefficient between the predicted true stress and the experimental value R is 0.985, and the relative error ARRE is 6.8%. Combined with the hot processing map and the electron backscatter diffraction (EBSD) analysis of the corresponding region, it can be seen that the temperature in the instability zone is between 875—950 ℃, the strain rate is between 0.3—10 s-1, and the microstructure features are long strip grains. The optimum temperature in the processing area is between 800—875 ℃, the strain rate is between 0.01—0.3 s-1, and the microstructure is equiaxed fine grain.
易宗鑫, 李小强, 潘存良, 沈正章. 等轴细晶TC4钛合金应变补偿本构关系及热加工图的研究[J]. 材料导报, 2021, 35(18): 18146-18152.
YI Zongxin, LI Xiaoqiang, PAN Cunliang, SHEN Zhengzhang. Research on Strain Compensation Constitutive Equation and Hot Processing Map of Equiaxed Fine Grain TC4 Alloy. Materials Reports, 2021, 35(18): 18146-18152.
1 Li Y F, Zeng X G.The Chinese Journal of Nonferrous Metals, 2019, 29(5), 972 (in Chinese). 李云飞,曾祥国. 中国有色金属学报, 2019, 29(5),972. 2 Zhang T Y, Liu Y, Liu B. Materials Science and Engineering of Powder Metallurgy, 2014, 19(2),184 (in Chinese). 张拓阳, 刘咏, 刘彬.粉末冶金材料科学与工程, 2014, 19(2),184. 3 Xu F, Yan Y B. Titanium Industry Progress, 2012, 29(2),15(in Chinese). 徐烽, 颜银标. 钛工业进展, 2012, 29(2), 15. 4 Xu Y, Yang X J, Du D N, et al.Special Casting & Nonferrous Alloys, 2017, 37(7),697(in Chinese). 徐勇, 杨湘杰, 杜丹妮, 等.特种铸造及有色合金, 2017, 37(7),697. 5 Wang B, Zeng W D, Peng W W.Titanium Industry Progress, 2014, 31(5),14(in Chinese). 汪波, 曾卫东, 彭雯雯. 钛工业进展, 2014, 31(5),14. 6 Zheng M Q, Wang G C, Yu M Z, et al.Journal of Materials Engineering, 2014,8, 32. 7 Zhong M C, Hong C J, Wei C P, et al.Results in Physics, 2019, 15,102633. 8 Aneta ukaszek-Soek, TomaszS＇leboda, Janusz Krawczyk, et al. Journal of Alloys and Compounds, 2019, 10(797),174. 9 Seshacharyulu T, Medeiros S C, Frazier W G,et al. Materials Science and Engineering, 2000, 284,184. 10 Xiao J, Li D S, Li X Q, et al.Journal of Alloys and Compounds, 2012,15(541), 346. 11 Tao Z J, Yang H, Li H, et al. Rare Metals, 2016, 35(2), 162. 12 Zhang X L, Li F G, Peng F H, et al.Journal of Aeronautical Materials, 2007, 27(5), 40(in Chinese). 张晓露,李付国,彭富华, 等.航空材料学报, 2007, 27(5), 40. 13 Zhou J R, Qi Y L. Journal of Tsinghua University, 2012, 52(7), 929. 14 Yan J P, Xue Y, Zhang Z M.Journal of Plasticity Engineering, 2019, 26(6),206(in Chinese). 闫江鹏, 薛勇, 张治民.塑性工程学报, 2019, 26(6), 206. 15 Yang M, Liang Y L, Zhong Y.Nonferrous Metals Engineering, 2013, 3(6), 22(in Chinese). 杨明,梁益龙,钟应. 有色金属工程, 2013,3(6),22. 16 Yang M, Liang Y L, Zhong Y.Hot Working Technology, 2013, 42(22), 44(in Chinese). 杨明,梁益龙,钟应. 热加工工艺, 2013, 42(22), 44. 17 Mosleh A O, Mikhaylovskaya A V, Kotov A D,et al.Journal of Manufacturing Processes, 2019, 45,262. 18 Lin Y C, Chen M S, Zhong J.Mechanics Research Communications,2008,3(35),142. 19 Prasady Y V R K, Gegel H L, Doraivelu S M.Metallurgical and Materials Transaction A, 1984, 15(10), 1883. 20 Srinivasan N, Prasad Y V R K, Rao P R.Materials Science and Enginee-ring A, 2008, 476(1),146. 21 Prasad Y V R K.Indian Journal of Science and Technology, 1990, 28, 435.
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2021, Vol. 35 
