The effect of strain during uniaxial compression on mechanical behavior of Ti–10V–2Fe–3Al alloy produced by blended elemental powder metallurgy and containing a metastable β matrix with ~0.1 fraction of α phase was investigated. A detailed scanning transmission electron microscopy study revealed the initiation of slip and deformation-induced α′′ martensite and ω_D formation at the beginning of plastic deformation in the stress plateau region of stress-strain curve. {332}<113> twinning occurred at a later stage. Deformation-induced ω_D formed in the β matrix and within {332}<113> twins, but was consumed by other deformation products at strains exceeding 0.2. Formation of {112}<111> twins within {332}<113> twins and along their interfaces with the matrix was uncovered. The rate of development of deformation products among the β phase grains was non-uniform with many being fully transformed to α′′ martensite by 0.4 strain, whereas others experienced deformation conditions related to stress plateau region (<0.1 strain) and were only partially transformed. Formation of deformation-induced nanoscale ω_D at the α′′ martensite/β interface was found only in the sample with more stable β matrix due to 0.26 fraction of α being present. This was related to a higher rigidity of the β phase resulting from the higher levels of alloying elements. This induced the triggering of β→ω transformation by stresses arising from α′′ martensite formation.

研究了单轴压缩过程中的应变对混合元素粉末冶金生产的含亚稳β基体且α相分数约为0.1的Ti-10V-2Fe-3Al合金力学性能的影响。详细扫描透射电子显微镜研究揭示滑移变形引起的α''马氏体和ω的起始_d形成在应力-应变曲线的应力平台区域塑性变形的起点。{332} <113>孪生在随后的阶段发生。形变诱导ω _d在β基体中和{332} <113>孪晶中形成了β，但是在超过0.2的应变下被其他变形产物消耗。未发现在{332} <113>孪晶中以及沿其与基体的界面内形成{112} <111>孪晶。β相晶粒中形变产物的发展速率不均匀，许多在0.4应变下完全转变为α''马氏体，而其他相经历了与应力平稳区有关的形变条件（<0.1应变），仅部分发生了形变。 。变形引起的纳米级ω的形成_d由于存在0.26分数的α，仅在具有更稳定的β基体的样品中发现了α'马氏体/β界面的“α”。这与合金元素含量较高导致的β相刚性更高有关。这引起了由α''马氏体形成引起的应力触发β→ω转变。