预时效工艺对Ti-3.5Al-5Mo-6V-3Cr-2Sn-0.5Fe钛合金组织与性能的影响

详细信息    查看全文 | 推荐本文 |

英文篇名：Effect of Pre-aging on Microstructure and Mechanical Properties of Ti-3.5Al-5Mo-6V-3Cr-2Sn-0.5Fe Alloy 作者：杜赵新 ; 刘国龙 ; 崔晓明 ; 刘慧敏 ; 程军 英文作者：Du Zhaoxin;Liu Guolong;Cui Xiaoming;Liu Huimin;Cheng Jun;Inner Mongolia University of Technology;Northwest Institute for Nonferrous Metal Research; 关键词：双级时效 ; 高强β钛合金 ; ω相 ; 微观组织 ; 力学性能 英文关键词：duplex aging;;high strength β titanium alloy;;ω phase;;microstructure;;mechanical properties 中文刊名：COSE 英文刊名：Rare Metal Materials and Engineering 机构：内蒙古工业大学;西北有色金属研究院; 出版日期：2019-06-15 出版单位：稀有金属材料与工程 年：2019 期：v.48;No.395 基金：国家自然科学基金青年基金(516010990);; 内蒙古自然科学基金(2016BS0506);; 内蒙古工业大学科学研究重点基金(ZD201607);; 内蒙古自治区重大基础研究开放课题 语种：中文; 页：COSE201906029 页数：5 CN：06 ISSN：61-1154/TG 分类号：192-196

摘要

对Ti-3.5Al-5Mo-6V-3Cr-2Sn-0.5Fe钛合金分别进行单级和双级时效热处理,对比研究双级时效工艺对高强β钛合金组织与性能影响。单级时效温度为550℃,双级时效工艺采用在400℃预时效之后再进行550℃下的再时效处理。研究结果表明,合金在400℃预时效时析出了ω相,随着预时效时间的延长,ω相最终转变为α相。相比单级时效而言,合金经双级时效后其次生α相显微组织得到明显细化,其原因主要是因为预时效阶段为后续较高温度下次生α相的形核与长大提供了更多的形核质点。双级时效工艺可以大幅提高合金的强度及硬度,但是塑性略有下降。
        The microstructure evolution and mechanical properties of Ti-3.5Al-5Mo-6V-3Cr-2Sn-0.5Fe alloy after single and duplex aging treatments were studied. The single aging temperature was 550 °C, while the duplex aging included pre-aging at 400 °C followed by re-aging at 550 °C. The results show that when the alloy is pre-aged at 400 °C, the ω phase precipitates. As the pre-aging time extends, the ω phase finally changes to the α phase. Duplex aging is effective to yield the α phase fine dispersion, and the pre-precipitated isothermal ω phase provides more uniform nucleation positions for precipitation of α phase than single aging so as to improve the alloy tensile strength and hardness greatly, but the ductility drops slightly.

引文

[1]Boyer R R.Materials Science and Engineering A[J],1996,213(1-2):103
    [2]Gurrappa.I.Materials Characterization[J],2003,51(2-3):131
    [3]Pang J,Blackwood D J.Corrosion Science[J],2016,105:17
    [4]Niinomi M,Nakai M,Hieda J.Acta Biomaterialia[J],2012,8(11):3888
    [5]Boyer R R,Briggs R D.Journal of Materials Engineering&Performance[J],2005,14(6):681
    [6]Cotton J D,Briggs R D,Boyer R R et al.JOM[J],2015,67(6):1281
    [7]?milauerováJ,HolyV,Harcuba P et al.Proceedings of the13th World Conference on Titanium[C].San Diege:John Wiley&Sons,Inc,2016:609
    [8]Li C,Lee D G,Mi X et al.Journal of Alloys&Compounds[J],2013,549:152
    [9]NejezchlebováJ,JanovskáM,Seiner H et al.Acta Materialia[J],2016,110:185
    [10]Yasuya O,Toshitaka O,Kiyomichi N et al.Materials Science and Engineering A[J],2001,312(1-2):182
    [11]Ivasishin O,Markovsky P,Semiatin S et al.Materials Science and Engineering A[J],2005,405(1):296
    [12]Prima F,Vermaut P,Texier G et al.Scripta Materialia[J],2006,54(4):645
    [13]Zheng Y,Deep C,Talukder A et al.Scripta Materialia[J],2016,123:81
    [14]Zheng Y,Williams R,Wang D et al.Acta Materialia[J],2016,103:850
    [15]He B,Cheng X,Li J et al.Journal of Alloys&Compounds[J],2017,708:1054.
    [16]Wu Xiaodong(吴晓东),Yang Guanjun(杨冠军)Ge Peng(葛鹏)et al.Titanium Industry Progress(钛工业进展)[J],2008,25(5):1
    [17]Li T,Kent D,Sha G et al.Acta Materialia[J],2016,106:353
    [18]Zhao Yongqing(赵永庆),Chen Yongnan(陈永楠),Zhang Xuemin(张学敏)et al.Phase Transformation and Heat Treatment of Titanium Alloys(钛合金相变及热处理)[M].Changsha:Central South University Press,2012
    [19]Wang Zhe(王哲),Wang Xinnan(王新南),Zhu Liwei(祝力伟)et al.Journal of Aeronautical Materials(航空材料学报)[J],2016,36(5):1
    [20]He Dan(何丹),Wang Qingjuan(王庆娟),Gao Qi(高颀)et al.Chinese Journal of Rare Metals(稀有金属)[J],2016(7):633
    [21]Meyers M,Chawla K.Mechanical Behavior of Materials[M].New York:Cambridge University Press,2009
    [22]Terlinde G,Rathjen H J,Schwalbe K H.Metallurgical Transactions A[J],1988,19(4):1037
    [23]Froes F H,Bomberger H B.Journal of Metals[J],1985,37(7):28
    [24]Shang Guoqiang(商国强),Kou Hongchao(寇宏超),Fei Yue(费跃)et al.Rare Metal Materials&Engineering(稀有金属材料与工程)[J],2010,39(6):1061