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采用真空自耗电弧炉熔炼制备Ti9Al合金,通过渗氢处理显著提高氢含量,在凸轮塑性试验机ЧПИ-2上以10mm/min的速度进行热模拟试验。研究发现:氢可以降低Ti9Al合金的相变温度,扩大α+β区的温度范围;氢作为β稳定剂会妨碍或完全抑制以Ti_3Al为基的α_2相的析出;钛合金的氢合金化可促使β相在更低温度下稳定化,明显地提高了Ti9Al合金塑性。
The Ti9Al alloy was prepared by vacuum consumable arc furnace melting. The hydrogen content was significantly increased by hydrogen permeation treatment, and the thermal simulation test was carried out on the cam plasticity tester ЧПИ-2 at the speed of 10mm / min. It is found that hydrogen can reduce the phase transition temperature of Ti9Al alloy and enlarge the temperature range of α + β region. Hydrogen as β stabilizer will hinder or completely inhibit the precipitation of α_3 phase based on Ti_3Al. Hydrogen alloying of titanium alloy can promote The β phase is stabilized at lower temperature, which obviously improves the plasticity of Ti9Al alloy.