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Creep Behaviour in Ti-based Alloys

机译：钛基合金的蠕变行为

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Simulation of different mechanical properties in titanium base alloys is described in the review to study the relative competencies with service exposure at high temperature. Precipitation and solution hardening of matrix, as well as solutes that increase activation energy for self diffusion and that increase twinning propensity, increase creep life. A reduction of creep properties appears on strain induced plate formation or relative instability of interfaces of lamella. An increase in beta-phase in microstructure by fast cooling reduces fracture toughness properties, whereas a transverse texture of thermomechanical treatment reduces impact properties as compared to solution treated and annealed specimen. Coarsening of phases at high temperature degradation appears to be rectified in many cases by Zener pinning from either indigenous or exogenous particulates. Microstructural and orientation sensitivity rankings have marked material performance under shear plugging during ballistic limit test.
机译：这篇综述描述了钛基合金中不同机械性能的模拟，以研究高温条件下暴露时的相对能力。基质的沉淀和固溶硬化，以及增加自我扩散活化能并增加孪生倾向的溶质，会延长蠕变寿命。蠕变特性的降低出现在应变引起的板的形成或薄片界面的相对不稳定性上。通过快速冷却增加β相的微观结构会降低断裂韧性，而与经过固溶处理和退火的试样相比，热机械处理的横向织构会降低冲击性能。在许多情况下，似乎可以通过从本地或外源颗粒中进行齐纳针扎来纠正高温下的粗化现象。在弹道极限试验期间，在剪切堵塞下，微观结构和取向敏感性等级已标记了材料性能。

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