航天推进技术研究院主办
[1]吴晓明,王 玉,高 斌,等.基于应变量耦合的低成本Ti-Al-V-Fe合金本构关系[J].火箭推进,2020,46(02):85-91.
WU Xiaoming,WANG Yu,GAO Bin,et al.Constitutive relationship of low cost Ti-Al-V-Fe alloy based on strain coupling[J].Journal of Rocket Propulsion,2020,46(02):85-91.
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WU Xiaoming,WANG Yu,GAO Bin,et al.Constitutive relationship of low cost Ti-Al-V-Fe alloy based on strain coupling[J].Journal of Rocket Propulsion,2020,46(02):85-91.
基于应变量耦合的低成本Ti-Al-V-Fe合金本构关系
《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]
卷:
46
期数:
2020年02期
页码:
85-91
栏目:
工艺与材料
出版日期:
2020-04-28
- Title:
- Constitutive relationship of low cost Ti-Al-V-Fe alloy based on strain coupling
- 文章编号:
- 1672-9374(2020)02-0085-07
- Keywords:
- low-cost titanium alloy; hot deformation behavior; strain coupling; constitutive equation; thermal activation energy
- 分类号:
- V463
- 文献标志码:
- A
- 摘要:
- 为了获取新型低成本Ti-Al-V-Fe合金热成形工艺窗口,研究了热加工参数为变形温度875～1 100 ℃、应变速率0.001～1 s-1、变形量70%的低成本Ti-Al-V-Fe合金热变形行为。结果表明:流变应力与变形温度成反比,与应变速率成正比,合金为典型负温度、正应变敏感材料。以热模拟实验数据为依据,运用多元线性回归方法,确定了材料常数与应变的函数关系,建立了基于应变量耦合的α+β两相区及β单相区Arrhennius本构方程,其耦合系数为0.98,表明建立的模型在给定任意应变量时可准确预测流变应力。根据热激活能,判别合金在不同相区软化机制,单相区为动态回复,两相区为动态再结晶。
- Abstract:
- In order to determine the optimal hot deformation process window of the new low-cost Ti-Al-V-Fe alloy, the hot deformation behavior was investigated with the deformation temperature of 875～1 100 ℃, strain rate of 0.001～1 s-1 and deformation of 70%.The results indicate that the alloy is a typical negative temperature and positive strain sensitive material, the flow stress is inversely proportional to the deformation temperature and positively proportional to the strain rate.Based on the experimental data of thermal simulation, the Arrhennius functional relation between material constant and strain was solved by a multiple linear regression method.The Arrhennius constitutive equations of α+β two-phase region and β single-phase region were put forward based on the strain coupling.The coupling correlation coefficient reaches 0.98, which indicates that the established model could accurately predict the flow stress when given any strain.The softening mechanism of the alloy in different phase zones is identified according to the thermal activation energy.The single-phase region is dynamic recovery, and the two-phase region is dynamic recrystallization.
参考文献/References:
[1] 刘全明, 张朝晖, 刘世锋, 等.钛合金在航空航天及武器装备领域的应用与发展[J].钢铁研究学报, 2015, 27(3):1-4.
[2] 石玉峰, 江河, 刘振球.钛技术与应用[M].西安:陕西科学技术出版社,1990:147.
[3] 庾晋, 周洁.金属钛的性能、发展与应用[J].南方金属, 2004(1):17-23.
[4] 朱知寿.我国航空用钛合金技术研究现状及发展[J].航空材料学报, 2014, 34(4):44-50.
[5] 许晓勇, 赵世红, 王召.轻质钛合金喷管在氢氧发动机上的应用研究[J].火箭推进, 2016, 42(4):1-6.XU X Y, ZHAO S H, WANG Z.Application of lightweight titanium alloy nozzle in LOX-LH2 rocket engine[J].Journal of Rocket Propulsion, 2016, 42(4):1-6.
[6] 吴晓明, 王玉, 郭蓓, 等.钛合金裂纹产生原因及改进工艺[J].火箭推进, 2019, 45(6):78-83.WU X M, WANG Y, GUO B, et al.The research on defect analysis of titanium alloy and improved process[J].Journal of Rocket Propulsion, 2019, 45(6):78-83.
[7] 朱知寿, 商国强, 王新南, 等.低成本高性能钛合金研究进展[J].钛工业进展, 2012, 29(6):1-5.
[8] 冯秋元, 佟学文, 王俭, 等.低成本钛合金研究现状与发展趋势[J].材料导报, 2017, 31(9):128-134.
[9] 赵永庆, 李月璐, 吴欢, 等.低成本钛合金研究[J].稀有金属, 2004, 28(1):66-69.
[10] 葛鹏.陆军用低成本钛合金发展现状[C]//第六届海内外中华青年材料科学技术研讨会暨第十五届全国青年材料科学技术研讨会论文集.西安:西北有色金属研究院, 2015.
[11] 王松茂, 白新房, 朱波, 等.钛合金相变点概述[J].西安文理学院学报(自然科学版), 2017, 20(4):92-96.
[12] 李玉涛, 耿林, 徐斌, 等.TC11钛合金相变点的测定与分析[J].稀有金属, 2006, 30(2):231-234.
[13] 田飞, 曾卫东, 马雄, 等.物理分析法与金相法测定BT25钛合金相变点[J].材料热处理学报, 2011, 32(5):1-5.
[14] 陈绍楷, 田弋纬, 常璐, 等.钛合金α+β/β转变温度测定的金相法与差热分析法对比研究[J].稀有金属材料与工程, 2009, 38(11):1916-1919.
[15] 罗皎, 李淼泉, 李宏, 等.TC4钛合金高温变形行为及其流动应力模型[J].中国有色金属学报, 2008, 18(8):1395-1401.
[16] 王静怡.高强高导Cu-Cr-Zr合金的热变形行为研究[D].西安:西安建筑科技大学, 2013.
[17] SELLARS C M, MCTEGART W J.On the mechanism of hot deformation[J].Acta Metallurgica, 1966, 14(9):1136-1138.
[18] ZENER C, HOLLOMON J H.Effect of strain rate upon plastic flow of steel[J].Journal of Applied Physics, 1944, 15(1):22-32.
[19] PILEHVA F, ZAREI-HANZAKI A, GHAMBARI M, et al.Flow behavior modeling of a Ti–6Al–7Nb biomedical alloy during manufacturing at elevated temperatures[J].Materials & Design, 2013, 51:457-465.
[20] CHAI R X, GUO C, YU L.Two flowing stress models for hot deformation of XC45 steel at high temperature[J].Materials Science and Engineering:A, 2012, 534:101-110.
[21] 董纪.热处理工艺对25CrMo48V超高强度钢组织及碳化物演变的影响[D].天津:天津大学, 2017.
备注/Memo
收稿日期:2018-12-11; 修回日期:2019-08-24基金项目:国家自然科学基金(51425402,51331005)作者简介:吴晓明(1991—),男,硕士,工程师,研究领域为钛合金熔模精密铸造
更新日期/Last Update:
2020-04-25