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应用透射电子显微术研究了不同热处理之后的Ti-8Al-1Mo-1V合金的显微结构。在合金的α相中出现有序反应,其临介温度是～525℃。电子衍射指出有序相为DO_(19)型超点阵。在870℃以上淬火β相发生马氏体转变,发现了二种类型的马氏体:低温形成的具有严重层错六角或面心立方的α′相和高温形成的六角结构的α″相。过饱和的β相、马氏体结构α′和α″相时效时形成α和β相的混合物,其反应机理决定初始结构。上述转变与某些机械性能有很大关系。文中说明了合金在双重退火和工业退火状态下的机械性能。
The microstructure of Ti-8Al-1Mo-1V alloy after different heat treatments was studied by transmission electron microscopy. An ordered reaction occurred in the alpha phase of the alloy with a temperature of ~ 525 ° C. Electron diffraction indicates that ordered phase is DO_ (19) superlattice. The martensitic transformation of the hardened β phase above 870 ° C led to the discovery of two types of martensite: the α ’phase of the hexagonal structure formed by the low temperature formation of α’ phase with severe stacking faults or face-centered cubic and high temperature. Supersaturated β-phase, martensite structure α ’and α "phase when the formation of a mixture of α and β phase, the reaction mechanism determines the initial structure. The above transformation has a great relationship with some mechanical properties. The article describes the alloy in the double annealing and industrial annealing state mechanical properties.