TiNi合金冲击相变过程中温度变化规律的实验研究

刘永贵 唐志平 崔世堂

刘永贵, 唐志平, 崔世堂. TiNi合金冲击相变过程中温度变化规律的实验研究[J]. 爆炸与冲击, 2014, 34(6): 679-684. doi: 10.11883/1001-1455(2014)06-0679-06
引用本文: 刘永贵, 唐志平, 崔世堂. TiNi合金冲击相变过程中温度变化规律的实验研究[J]. 爆炸与冲击, 2014, 34(6): 679-684. doi: 10.11883/1001-1455(2014)06-0679-06
Liu Yong-gui, Tang Zhi-ping, Cui Shi-tang. Experimental study on temperature evolution of TiNi alloy during shock-induced phase transformation[J]. Explosion And Shock Waves, 2014, 34(6): 679-684. doi: 10.11883/1001-1455(2014)06-0679-06
Citation: Liu Yong-gui, Tang Zhi-ping, Cui Shi-tang. Experimental study on temperature evolution of TiNi alloy during shock-induced phase transformation[J]. Explosion And Shock Waves, 2014, 34(6): 679-684. doi: 10.11883/1001-1455(2014)06-0679-06

TiNi合金冲击相变过程中温度变化规律的实验研究

doi: 10.11883/1001-1455(2014)06-0679-06
详细信息
    作者简介:

    刘永贵(1982—), 男, 博士研究生

  • 中图分类号: O347.1

Experimental study on temperature evolution of TiNi alloy during shock-induced phase transformation

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  • 摘要: 针对初始SME(shape memory effect)和PE(pseudo-elastic)状态TiNi合金试样,采用带有红外测温系统的SHPB冲击压缩装置,实时测量了冲击相变过程中两种材料试样表面瞬态温度,并根据实验结果计算了相应的温度变化。实验结果表明,冲击加载相变过程中,温度随相变应变的增大而升高,当应变最大时,温度最高;卸载过程中,对初始PE状态试样,温度降低,对初始SME状态试样,温度保持最高温度不变或降低,这同加载最高温度有关;卸载完成后,两种试样温度均高于其初始温度。计算温度结果表明,相变耗散功对加、卸载相变过程中温度变化的作用不可忽略。
  • 图  1  TiNi形状记忆合金试样的典型冲击压缩信号图

    Figure  1.  Raw data of shock compression of TiNi alloy specimen

    图  2  初始SME状态试样的应力应变关系和实时温度

    Figure  2.  Stress-strain curves and real-time temperature curves of SME specimens

    图  3  初始PE状态试样的应力应变关系和实时温度

    Figure  3.  Stress-strain curves and temperature curves of PE specimens

    图  4  初始SME状态试样的冲击相变过程温度变化

    Figure  4.  Temperature change of SME specimens in the process of phase transformation

    图  5  初始PE状态试样的冲击相变过程温度变化

    Figure  5.  Temperature change of PE specimens in the process of phase transformation

    表  1  TiNi合金基本热力学参数

    Table  1.   Properties of TiNi alloy in the experiment

    状态ρ/(kg·m-3)L/(J·g-1)cp(J·g-1·℃-1)Ms/℃Mf/℃As/℃Af/℃
    SME6 45012.900.5013.215.446.252.3
    PE6 4508.770.45-27.4-48.5-26.6-9.2
    下载: 导出CSV

    表  2  实验的参数和主要结果

    Table  2.   Experimental parameters and main results

    状态实验v0/(m·s-1)σt/MPaεmεr
    14.6115.80.0150.021
    SME27.5115.80.0270.024
    312.7115.80.0420.033
    410.2589.50.0120.006
    PE514.5589.50.0300.010
    617.8589.50.0470.012
    下载: 导出CSV

    表  3  测量和计算的温度

    Table  3.   Measured and calculated temperatures

    状态实验测量计算
    θm/℃θu/℃θ1/℃θ2/℃θm/℃θu/℃
    130.430.41.08.033.033.0
    SME237.535.52.213.339.536.8
    348.041.04.620.048.642.2
    433.325.62.75.332.025.1
    PE543.330.27.410.642.030.8
    651.232.510.916.651.533.9
    下载: 导出CSV
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出版历程
  • 收稿日期:  2013-04-25
  • 刊出日期:  2014-11-25

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