不同应变速率和脉冲电压下0.3%置氢Ti-6Al-4V钛合金压缩变形力学分析

详细信息    查看全文 | 推荐本文 |

英文篇名：Mechanical analysis on compressive deformation of Ti-6Al-4V titanium alloy with 0.3% hydrogen under different strain rates and pulse voltages 作者：陈伟 英文作者：Chen Wei;School of Electrical and Electronic Engineering,Zhejiang Industry Polytechnic College; 关键词：Ti-6Al-4V钛合金 ; 脉冲电压 ; 压缩变形 ; 置氢 ; 准解理穿晶断裂 英文关键词：Ti-6Al-4V titanium alloy;;pulse voltage;;compression deformation;;hydrogenation;;quasi-cleavage transcrystalline fracture 中文刊名：DYJE 英文刊名：Forging & Stamping Technology 机构：浙江工业职业技术学院电气电子工程学院; 出版日期：2019-01-25 出版单位：锻压技术 年：2019 期：v.44;No.280 基金：国家基金重大科研仪器研制项目(4142780076) 语种：中文; 页：DYJE201901035 页数：5 CN：01 ISSN：11-1942/TG 分类号：167-171

摘要

利用固态充氢法制备0. 3%置氢的Ti-6Al-4V钛合金,在万能力学测试机上研究应变速率和脉冲电压对其压缩变形行为的影响。研究结果表明:0. 3%置氢Ti-6Al-4V钛合金的微观组织相对于未置氢钛合金组织形态发生了明显改变。当施加脉冲电压后,钛合金的伸长率都发生了大幅提高,随着电压升高到80 V时,0. 3%置氢钛合金具有显著高于未置氢钛合金的屈服强度。当应变量增加后,钛合金压缩过程中温度发生先升后降的变化。当对钛合金施加脉冲电压后,会形成大量浅韧窝,对0. 3%置氢Ti-6Al-4V钛合金施加脉冲电压后可以提高其塑性,发生准解理穿晶断裂。
        The Ti-6Al-4V titanium alloy with 0. 3% hydrogen was prepared by the solid hydrogen filling method,and the influences of strain rate and pulse voltage on its compressive deformation behavior were studied by the universal mechanical testing machine. The results show that the microstructure of Ti-6Al-4V titanium alloy with 0. 3% hydrogen changes significantly compared with that of the titanium alloy without hydrogen. When the pulse voltage is applied,the elongations of titanium alloy both increase greatly,and when the voltage increases to 80 V,the titanium alloy with 0. 3% hydrogen has a significantly lower yield strength than that of the titanium alloy without hydrogen. When the strain increases,the temperature of titanium alloy increases firstly and then decreases during the compression process. And when the pulse voltage is applied to the titanium alloy,many shallow dimples are formed. Thus,the pulse voltage applied to the Ti-6Al-4V titanium alloy with 0. 3% hydrogen can improve its plasticity and produce quasi-cleavage transcrystalline fracture.

引文

[1]张伟福,李淼泉,林莺莺.置氢Ti-6Al-4V钛合金的热压缩变形行为研究[J].塑性工程学报,2008,15(6):107-111.Zhang W F,Li M Q,Lin Y Y.Deformation behavior in the isothermal compression of hydrogenated Ti-6Al-4V alloy[J].Journal of Plastic Engineering,2008,15(6):107-111.
    [2]陆子川,姜风春,侯红亮,等.高能脉冲电压对金属材料的作用机理[J].塑性工程学报,2015,22(4):11-17.Lu Z C,Jiang F C,Hou H L,et al.Progress on mechanisms study of high energy electropulsing on metals[J].Journal of Plastic Engineering,2015,22(4):11-17.
    [3]邓同生,李尚,卢娇,等.钛合金型材精密挤压技术国内外研究现状[J].锻压技术,2018,43(6):1-9.Deng T S,Li S,Lu J,et al.Research status of precision extrusion technology for titanium alloy profile[J].Forging&Stamping Technology,2018,43(6):1-9.
    [4]袁士翀,王周田,高志刚,等.β锻造参数对TC17钛合金组织性能的影响[J].锻压技术,2018,43(2):14-18.Yuan S C,Wang Z T,Gao Z G,et al.Influence ofβforging parameters on microstructure and properties of titanium alloy TC17[J].Forging&Stamping Technology,2018,43(2):14-18.
    [5]Ye X X,Tse Z T H,Tang G Y,et al.Effect of electroplastic rolling on deformability,mechanical property and microstructure evolution of Ti-6Al-4V alloy strip[J].Materials Characterization,2014,98:147-161.
    [6]Zhao Z Y,Hou H L,Zhang N,et al.Effect of high-energy electropulses on the compression deformation behavior of Ti-6Al-4V alloy[J].Metals and Materials International,2016,22(4):585-593.
    [7]门正兴,周杰,郑金辉,等.TC18钛合金热压缩过程峰值应力及动态软化本构模型[J].锻压技术,2018,43(6):129-133.Men Z X,Zhou J,Zheng J H,et al.Peak stress and dynamic softening constitutive model of titanium alloy TC18 during hot compression[J].Forging&Stamping Technology,2018,43(6):129-133.
    [8]Zhu R F,Tang G Y,Shi S Q,et al.Effect of electroplastic rolling on the ductility and super elasticity of Ti Ni shape memory alloy[J].Materials&Design,2013,44:606-611.
    [9]李晓华,牛勇,侯红亮,等.置氢Ti-6Al-4V钛合金微观组织演变与高温变形行为[J].中国有色金属学报,2008,36(18):1414-1420.Li X H,Niu Y,Hou H L,et al.Microstructure evolution and high temperature deforming behavior of hydrogenated Ti-6Al-4V alloy[J].The Chinese Journal of Nonferrous Metals,2008,36(18):1414-1420.
    [10]Li M Q,Zhang W F.Effect of hydrogen on processing maps in isothermal compression of Ti-6Al-4V titanium alloy[J].Materials Science and Engineering A,2009,501(1-2):32-37.
    [11]牛勇,李晓华,王耀奇,等.置氢对Ti-6Al-4V钛合金高温塑性变形的影响[J].稀有金属材料与工程,2008,37(12):2089-2093.Niu Y,Li X H,Wang Y Q,et al.Effect of hydrogenation on the hot deformation of Ti-6A1-4V alloy[J].Rare Metal Materials and Engineering,2008,37(12):2089-2093
    [12]易卓勋,赖小明,王博,等.5A90 Al-Li合金板材脉冲电流辅助拉深成形[J].锻压技术,2017,42(8):28-32.Yi Z X,Lai X M,Wang B,et al.Pulse current auxiliary deep drawing for Al-Li alloy sheet 5A90[J].Forging&Stamping Technology,2017,42(8):28-32.
    [13]GB/T 7314-2017,金属材料室温压缩试验方法[S].GB/T 7314-2017,Metallic materials-Compression test method at room temperature[S].