张俊喜,郭小汝,陈百明,张振宇,徐子峣

• 1:兰州工业学院材料工程学院
• 2:兰州工业学院绿色切削加工技术及应用甘肃省重点实验室

摘要(Abstract)：

利用光学显微镜(OM)、扫描电镜(SEM)、X射线衍射(XRD)、维氏硬度计、电子万能试验机和分离式霍普金森压杆(SHPB)等分析测试方法,研究了Ti-6Al-2Zr-2Sn-3Mo-2Nb-1Cr-0.1Si-xFe (x=0,0.4,0.8,质量分数,%)铸态合金双重退火后的组织和力学性能。结果表明:3种铸态合金的组织均为近魏氏组织;热处理后,随着Fe含量增加,合金组织中的α相长径比减小,等轴化更为明显,且次生α相细化以及β相含量增加,维氏硬度升高。在0.001 s~(-1)应变速率下静态压缩,合金具有应变强化效应,Fe含量越高应变强化效果越显著,TC21-0.4Fe合金断裂前最大应力和断裂应变比TC21-0Fe合金分别提高约16.86%和30.72%。在2500 s~(-1)高应变速率下动态压缩,TC21-0.8Fe合金的流变应力最高,约为1377 MPa,比TC21-0Fe合金提高了6.99%,TC21-0.4Fe合金具有最好的断裂应变,约为0.139,比TC21-0Fe合金提高了21.92%。

关键词(KeyWords)： Ti-6Al-2Zr-2Sn-3Mo-2Nb-1Cr-0.1Si-xFe钛合金;显微组织;Fe元素;断裂应变

Abstract:

Keywords:

基金项目(Foundation): 甘肃省高等学校创新基金项目(2021B-314);; 甘肃省高等学校产业支撑项目(2020C-30);; 2020年度省级重点人才项目;; 兰州工业学院“启智”人才项目(2020QZ-02)

作者(Author): 张俊喜,郭小汝,陈百明,张振宇,徐子峣

DOI: 10.13289/j.issn.1009-6264.2021-0378

参考文献(References)：

• [1] 刘世锋，宋玺，薛彤，等.钛合金及钛基复合材料在航空航天的应用和发展[J].航空材料学报，2020,40(3):77-94.LIU Shi-feng,SONG Xi,XUE Tong,et al.Application and development of titanium alloy and titanium matrix composites in aerospace field[J].Journal of Aeronautical Materials,2020,40(3):77-94.
• [2] 张尧，常辉，李广州，等.Fe含量对Ti-xFe-B合金铸态组织演变及力学性能的影响[J].稀有金属材料与工程，2017,46(6):180-184.ZHANG Yao,CHANG Hui,LI Guang-zhou,et al.Effect of Fe content on microstructure evolution and mechanical properties of as-cast Ti-xFe-B alloy[J].Rare Metal Materials and Engineering,2017,46(6):180-184.
• [3] Abdalla A O,Amrin A,Muhammad S,et al.Iron as a promising alloying element for the cost reduction of titanium alloys:A review[J].Applied Mechanics and Materials,2017,4429:147-153.
• [4] Li C L,Narayana P L,Reddy N S,et al.Modeling hot deformation behavior of low-cost Ti-2Al-9.2Mo-2Fe beta titanium alloy using a deep neural network[J].Journal of Materials Science and Technology,2019,35(5):907-916.
• [5] Zhu L W,Wang X N,Fei Y,et al.Characterization of hot deformation behavior of Ti-4.5Al-3V-2Mo-2Fe titanium alloy[J].Materials Science Forum,2016,4327:309-316.
• [6] Wang J,Qin Z W,Xiong F H,et al.Design and preparation of low-cost α+β titanium alloy based on assessment of Ti-Al-Fe-Cr system[J].Materials Science and Engineering A,2018,732(8):63-69.
• [7] 毛成亮，赵彬，贾蔚菊，等.Fe元素含量对钛合金性能的影响[J].钛工业进展，2019,36(2):42-46.MAO Cheng-liang,ZHAO Bin,JIA Wei-ju,et al.Effect of Fe element content on properties of titanium alloy[J].Titanium Industry Progress,2019,36(2):42-46.
• [8] 毛江虹，杨晓康，罗斌莉.Fe元素对TC4ELI合金力学性能的影响[J].金属热处理，2019,44(6):95-99.MAO Jiang-hong,YANG Xiao-kang,LUO Bin-li.Effect of element Fe on mechanical properties of TC4ELI alloy[J].Heat Treatment of Metals,2019,44(6):95-99.
• [9] 李强，许祥杰，付振闯，等.Fe元素对Ti-16Nb合金组织与性能的影响[J].材料热处理学报，2018,39(5):71-75.LI Qiang,XU Xiang-jie,FU Zhen-chuang,et al.Influence of Fe on microstructure and mechanical property of Ti-16Nb alloys[J].Transactions of Materials and Heat Treatment,2018,39(5):71-75.
• [10] 杨光，于博戎，王超，等.Fe元素对激光沉积制造高强钛合金组织及性能影响[J].应用激光，2020,40(3):393-398.YANG Guang,YU Bo-rong,WANG Chao,et al.Effect of element on microstructure and properties of high strength titanium alloy by laser deposition manufacturing[J].Applied Laser,2020,40(3):393-398.
• [11] Chen Z,Zhong D,Sun Q,et al.Effect of α phase fraction on the dynamic mechanical behavior of a dual-phase metastable β titanium alloy Ti-10V-2Fe-3Al[J].Materials Science and Engineering A,2021,816(10):141-322.
• [12] 陈冬梅，黄森森，贺飞，等.Fe元素对TA15钛合金显微组织和力学性能的影响[J].钛工业进展，2017,34(2):14-18.CHEN Dong-mei,HUANG Sen-sen,HE Fei,et al.Effects of Fe on the microstructures and mechanical properties of TA15 titanium alloy[J].Titanium Industry Progress,2017,34(2):14-18.
• [13] 张俊喜，易湘斌，沈建成，等.固溶和工作温度对TC21钛合金动态压缩性能和绝热剪切敏感性的影响[J].材料导报，2020,34(12):24092-24096.ZHANG Jun-xi,YI Xiang-bin,SHEN Jian-cheng,et al.Influence of solution and ambient temperature on dynamic compression mechanical properties and adiabatic shear sensitivity of TC21 titanium alloy[J].Materials Reports,2020,34(12):24092-24096.
• [14] 张俊喜，易湘斌，沈建成，等.高温与高应变率对TC21钛合金动态压缩性能及其绝热剪切敏感性的影响[J].振动与冲击，2020,39(19):135-140.ZHANG Jun-xi,YI Xiang-bin,SHEN Jian-cheng,et al Effects of high temperature and high strain rate on dynamic compression performance and adiabatic shear sensitivity of TC21 titanium alloy[J].Journal of Vibration and Shock,2020,39(19):135-140.
• [15] Zhang S,Liang Y,Xia Q F,et al.Study on tensile deformation behavior of TC21 titanium alloy[J].Journal of Materials Engineering and Performance,2019,28(3):1581-1590.
• [16] 郭小汝，张俊喜，易湘斌，等.次生α相含量对TC18钛合金动态压缩性能和绝热剪切敏感性的影响[J].材料热处理学报，2020,41(10):24-30.GUO Xiao-ru,ZHANG Jun-xi,YI Xiang-bin,et al.Influence of volume fraction of secondary α phase on dynamic compression properties and adiabatic shear sensitivity of TC18 titanium alloy[J].Transactions of Materials and Heat Treatment,2020,41(10):24-30.

文章评论(Comment)：