研究了具有不同β相稳定化元素(Mo, W)含量的TMW--1(Kβ=5.5)钛合金和TMW--2(Kβ=3.5)钛合金, 经不同双重和三重退火处理后的室温和650℃高温拉伸性能。结果表明: 经适当的热处理, 在不损害室温塑性的情况下,TMW--1钛合金和TMW--2钛合金在650℃的拉伸性能均能达到近$\alpha$钛合金在600℃的拉伸性能。为了保证合金650℃的拉伸性能, 合金中$\beta$稳定化元素(Mo, W)含量应使β稳定化系数Kβ保持在3.0--3.5为宜。
The tensile properties at room temperature and at 650℃ of TMW–1 titanium alloy and TMW–2 titanium alloy, with different content of β–stabilizers (Mo, W), under different dual and ternary annealing, were studied. The results show that the tensile properties of TMW–1/2 titanium alloys at 650℃ were equivalent to those of several near α alloys at 600℃, without reducing the room temperature ductility. In order to improve the tensile properties at 650℃, the content of β–stabilizers (Mo,W) should keep the coefficient of β–stabilizers at 3.0–3.5.
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