典型熱處理工藝對Ti40合金蠕變性能的影響
發(fā)布人：上海艾荔艾合金股份有限公司www.shailiai.cn
更新時間：2016-01-20
研究在(600 ℃, 4 h, AC)(工藝1)和(850 ℃, 1 h, WQ)+(550 ℃, 6 h, AC)(工藝2)這2種典型熱處理工藝下合金的蠕變性能，并對其進(jìn)行觀察。
典型熱處理工藝對Ti40合金蠕變性能的影響Effects of typical heat treatments on creep properties of Ti40 alloy研究在(600 ℃, 4 h, AC)(工藝1)和(850 ℃, 1 h, WQ)+(550 ℃, 6 h, AC)(工藝2)這2種典型熱處理工藝下合金的蠕變性能，并對其進(jìn)行觀察。研究結(jié)果表明：在較低蠕變溫度時(500~520 ℃)，工藝1熱處理具有更好的抗蠕變性能；在較高蠕變溫度時(535~550 ℃)，工藝2熱處理具有更好的抗蠕變性能。這主要是由于這2種熱處理工藝對應(yīng)的組織不同，從而造成蠕變空洞不同，對應(yīng)的內(nèi)應(yīng)力、局部障礙對蠕變位錯阻礙不同。
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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