典型热处理工艺对Ti40合金蠕变性能的影响
发布人：上海艾荔艾合金股份有限公司www.shailiai.cn
更新时间：2016-01-20
研究在(600 ℃, 4 h, AC)(工艺1)和(850 ℃, 1 h, WQ)+(550 ℃, 6 h, AC)(工艺2)这2种典型热处理工艺下合金的蠕变性能，并对其进行观察。
典型热处理工艺对Ti40合金蠕变性能的影响Effects of typical heat treatments on creep properties of Ti40 alloy研究在(600 ℃, 4 h, AC)(工艺1)和(850 ℃, 1 h, WQ)+(550 ℃, 6 h, AC)(工艺2)这2种典型热处理工艺下合金的蠕变性能，并对其进行观察。研究结果表明：在较低蠕变温度时(500~520 ℃)，工艺1热处理具有更好的抗蠕变性能；在较高蠕变温度时(535~550 ℃)，工艺2热处理具有更好的抗蠕变性能。这主要是由于这2种热处理工艺对应的组织不同，从而造成蠕变空洞不同，对应的内应力、局部障碍对蠕变位错阻碍不同。
Two typical heat treatments were designed to study the creep behavior of Ti40 alloy: 1#, 600 ℃, 4 h, AC; 2#, (850 ℃, 1 h, WQ)+(550 ℃, 6 h, AC). The results show that as-1# samples heat treated have higher creep resistance in 500− 520 ℃ and as-2# samples heat treated in 535−550 ℃. This is mainly due to the different microstructures after two heat treatments. The different microstructures lead to different creep cavities and internal stresses during creep process, and indicate different creep characteristics at different temperatures.
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