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材料工程  2015 

TNW700钛合金板材热弯曲性能

DOI: 10.11868/j.issn.1001-4381.2015.07.012, PP. 68-72

Keywords: TNW700钛合金,热弯曲变形,回弹半径,回弹角度

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Abstract:

采用带有不同弯曲圆角的模具对TNW700钛合金薄板进行热弯曲实验,对其在温度为700~850℃,弯曲圆角为1/4~6t,弯曲角度为90°时的最小弯曲半径、回弹半径、回弹角度的变化规律进行了研究.结果表明沿垂直轧制方向变形的热弯曲窗口较沿轧制方向的宽,垂直轧制方向弯曲变形时,700℃和850℃的最小弯曲半径分别为1.5t和1/4t,而沿轧制方向弯曲变形时,700℃和850℃的最小弯曲半径分别为3t和1t.回弹半径和回弹角度均随温度的升高和弯曲半径的增大而减小,回弹方向主要取决于模具的叠放次序.

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