合金成分对TA15钛合金组织及力学性能的影响

隋楠 曹京霞 黄旭 高帆 谭启明

隋楠, 曹京霞, 黄旭, 高帆, 谭启明. 合金成分对TA15钛合金组织及力学性能的影响[J]. 航空材料学报, 2019, 39(1): 48-54. doi: 10.11868/j.issn.1005-5053.2018.000098
引用本文: 隋楠, 曹京霞, 黄旭, 高帆, 谭启明. 合金成分对TA15钛合金组织及力学性能的影响[J]. 航空材料学报, 2019, 39(1): 48-54. doi: 10.11868/j.issn.1005-5053.2018.000098
Nan SUI, Jingxia CAO, Xu HUANG, Fan GAO, Qiming TAN. Effect of composition on microstructure and mechanical properties of TA15 titanium alloy[J]. Journal of Aeronautical Materials, 2019, 39(1): 48-54. doi: 10.11868/j.issn.1005-5053.2018.000098
Citation: Nan SUI, Jingxia CAO, Xu HUANG, Fan GAO, Qiming TAN. Effect of composition on microstructure and mechanical properties of TA15 titanium alloy[J]. Journal of Aeronautical Materials, 2019, 39(1): 48-54. doi: 10.11868/j.issn.1005-5053.2018.000098

合金成分对TA15钛合金组织及力学性能的影响

doi: 10.11868/j.issn.1005-5053.2018.000098
基金项目: ××××基金项目(编号)
详细信息
    通讯作者:

    隋楠(1993—),女,助理工程师,硕士,主要从事高温钛合金材料研究工作,(E-mail)18810952025@163.com

Effect of composition on microstructure and mechanical properties of TA15 titanium alloy

  • 摘要: 为分析TA15钛合金成分的微小变化与显微组织和力学性能之间的响应关系,利用电子万能拉力试验机和分离式霍普金森压杆(SHPB)装置测量了4种不同成分TA15钛合金的室温准静态拉伸性能和动态力学性能,结果表明:Zr元素对室温拉伸强度性能影响微弱,随着主合金元素Al、V和Mo元素含量的增加,初生α相含量减小,次生α相片层较细,合金的强度提高,塑性下降;在临界应变率范围内,合金成分的微小变化对动态力学性能的影响微弱,提高主合金元素Al、Zr、V和Mo元素含量,有利于提高合金的临界应变率,且在此临界应变率下具有优异的动态力学性能;对于空冷条件下获得的等轴组织TA15钛合金,初生α相体积分数越小、次生α相片层较细时有利于室温抗拉强度、临界应变率和动态力学性能的提高。

     

  • 图  1  4种TA15合金热处理后显微组织

    Figure  1.  Microstructures of 4 kinds of TA15 alloys after heat treatment (a)1#;(b)2#;(c)3#;(d)4#

    图  2  4 种 TA15 合金次生α相形态

    Figure  2.  Morphologies of secondary α phase of 4 kinds of TA15 alloys (a)1#;(b)2#;(c)3#;(d)4#

    图  3  不同成分TA15钛合金动态压缩后变形特征

    Figure  3.  Deformation characteristics of TA15 titanium alloys with different compositions after dynamic compression (a)(2700 ± 100)s–1 and (3000 ± 100)s–1;(b)critical strain rate

    图  4  不同成分TA15钛合金的真应力-应变曲线

    Figure  4.  True stress-strain curves of TA15 titanium alloys with different compositions (a)(2700 ± 100) s–1

    (b)(3000 ± 100) s–1;(c)critical strain rate

    表  1  TA15钛合金成分(质量分数/%)

    Table  1.   Compositions of TA15 titanium alloys(mass fraction/%)

    AlloyAlZrMoVOTi
    1#6.852.041.201.040.11Bal.
    2#6.881.661.211.040.13Bal.
    3#6.871.670.811.040.13Bal.
    4#6.941.651.231.510.13Bal.
    下载: 导出CSV

    表  2  4 种 TA15 合金的微观组织参数

    Table  2.   Microstructure parameters of 4 kinds of TA15 alloys

    AlloyContent of primary α phase /%Lamella width of secondary α phase/μm
    1#67.820.683
    2#69.630.695
    3#76.440.803
    4#61.410.585
    下载: 导出CSV

    表  3  4 种 TA15 合金热处理后的拉伸性能

    Table  3.   Tensile properties of 4 kinds of TA15 alloys after heat treatment

    AlloyRm/MPaA/%Rm/MPa (calculated by
    equivalent formula)
    1#93318.1921
    2#93515.9940
    3#92717.6920
    4#95214.9959
    下载: 导出CSV

    表  4  不同成分TA15钛合金在(2700 ± 100) s–1、(3000 ± 100) s–1及临界应变率下的σεE

    Table  4.   Dynamic strength, dynamic strain and absorbed energy of TA15 titanium alloys with different compositions at (2700 ± 100) s–1、(3000 ± 100) s–1 and critical strain rate

    Alloy(2700 ± 100) s–1(3000 ± 100) s–1Critical strain rate
    σ/MPaεE/(J·cm–3) σ/MPaεE/(J·cm–3) ${\dot \varepsilon _{\rm c}}$σ/MPaεE/(J·cm–3)
    1#14900.2130915590.24382335015380.28424
    2#15150.2131615110.24367332015750.27423
    3#15240.2131815000.24363323015060.26393
    4#15060.2131115000.24357340016040.28450
    下载: 导出CSV

    表  5  不同成分TA15钛合金的室温准静态拉伸性能和临界动态力学性能对比

    Table  5.   Comparison of quasi-static tensile properties and critical dynamic properties for different compositions of TA15 titanium alloys

    AlloyComposition characteristicsContent of primary α phaseLamella width of secondary α phaseStrengthPlasticityCritical
    strain rate
    E/(J·cm–3)εσ/MPa
    1# and 2#1#:more Zr,
    Less O
    Slight
    Less
    Slight
    Lower
    Slight
    Lower
    HigherSlight
    Higher
    Slight
    Higher
    HigherLower
    2# and 3#2#:more MoLessLowerHigherLowerHigherHigherHigherHigher
    2# and 4#4#:more
    V and Al
    LessLowerHigherLowerHigherHigherHigherHigher
    3# and 4#4#:more Al,
    Mo and V
    LessLowerHigherLowerHigherHigherHigherHigher
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-08-22
  • 修回日期:  2018-12-13
  • 网络出版日期:  2018-12-10
  • 刊出日期:  2019-02-01

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