高强韧钛合金热加工变形特征及其影响因素

Hot Deformation Characteristics of High Strength-toughness Titanium Alloys and its Influencing Factors

高强韧钛合金作为结构材料在航空、航天等领域中具有不可或缺的地位,是钛合金发展最为重要的方向之一。综述了几种典型高强韧钛合金热加工过程中热变形激活能(Q_D)、流变应力及再结晶特征等最新研究进展,总结了合金成分、热加工参数及初始显微组织等因素对高强韧钛合金热加工变形的影响规律。最后,针对高强韧钛合金的热加工研究提出了建议,以期为现有高强韧钛合金的广泛应用及新型合金的研制提供参考。

High strength-toughness titanium alloys have gradually attracted considerable attention as important engineering materials in aerospace and aircraft industries. The research progress of activation energy, flow stresses and microstructure development of high strength-toughness titanium alloys during hot working is then overviewed and concluded. Different influences of alloy composition, deformation factors and microstructure on plastic deformation mechanisms of high strength-toughness titanium alloys are summarized. Finally, some advices about the hot process of high strength-toughness titanium alloys are also made, in order to provide some valuable references to design and explore new high strength-toughness titanium alloys with better comprehensive performance.