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    夏春林, 王高潮, 邓同生, 李娟, 徐雪峰, 孙前江. 基于最大m值法的TC4钛合金应变诱发超塑性变形工艺[J]. 机械工程材料, 2011, 35(6): 45-48.
    引用本文: 夏春林, 王高潮, 邓同生, 李娟, 徐雪峰, 孙前江. 基于最大m值法的TC4钛合金应变诱发超塑性变形工艺[J]. 机械工程材料, 2011, 35(6): 45-48.
    shu
    XIA Chun-lin, WANG Gao-chao, DENG Tong-sheng, LI Juan, XU Xue-feng, SUN Qian-jiang. Strain-Induced Superplastic Deformation Process of TC4 Titanium Alloy Based on Maximum m Value Method[J]. Materials and Mechanical Engineering, 2011, 35(6): 45-48.
    Citation: XIA Chun-lin, WANG Gao-chao, DENG Tong-sheng, LI Juan, XU Xue-feng, SUN Qian-jiang. Strain-Induced Superplastic Deformation Process of TC4 Titanium Alloy Based on Maximum m Value Method[J]. Materials and Mechanical Engineering, 2011, 35(6): 45-48.
    shu

    基于最大m值法的TC4钛合金应变诱发超塑性变形工艺

    Strain-Induced Superplastic Deformation Process of TC4 Titanium Alloy Based on Maximum m Value Method

      摘要
    • 摘要: 采用基于最大m值法的应变诱发超塑性工艺, 研究了TC4钛合金在850~950 ℃和预应变量为1.2~2.0时的超塑性变形特征, 以确定其最佳工艺参数。结果表明: 在预应变量相同的条件下, 随着温度的升高, 合金的伸长率下降; 超塑性变形后其内部发生了明显的动态再结晶, 温度越高, 晶粒越粗大; 最佳的工艺参数为变形温度850 ℃和预应变量1.5, 可获得2 147%的伸长率。

       

      Abstract: The superplastic deformation characteristics of TC4 titanium alloy were investigated within temperature of 850-950 ℃ and pre-strain of 1.2-2.0 by the method of strain-induced superplastic deformation based on the maximum m value method. Then the optimum process parameters were determined. The results show that the elongation of the alloy decreased with the increase of the deformation temperature under the same pre-stain. Dynamic recrystallization obviously occurred in the alloys after superplastic deformation, the higher of the deformation temperature, the coarser the grains were. The best process parameters of the strain-induced superplastic deformation were the deformation temperature of 850 ℃ and pre-strain of 1.5, and the elongation ratio could reach 2 147%.

       

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