A comparative study of the features of microstructure transformation in dispersion strengthened vanadium alloys of the V–Me(Cr, W)–Zr system under conditions of deformation by torsion under pressure and tension at room temperature is carried out. It is found out that suppression of dislocation plasticity in the high-strength state favors the formation of an anisotropic submicrocrystalline structure both during torsion deformation and in the region of strain localization in the case of tension at room temperature. It is shown that one of the main mechanisms of crystal fragmentation under these conditions is a dislocation-disclination mechanism, whose realization requires structural states with nonzero values of the curvature rotor or a high continual density of disclinations.

中文翻译：

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高压扭转常温拉伸变形条件下弥散强化钒合金的组织转变

对 V-Me(Cr, W)-Zr 系弥散强化钒合金在室温压力和拉伸扭转变形条件下的显微组织转变特征进行了比较研究。发现在高强度状态下抑制位错塑性有利于在扭转变形期间和在室温拉伸情况下在应变局部化区域中形成各向异性亚微晶结构。结果表明，在这些条件下晶体破碎的主要机制之一是位错-向错机制，其实现需要具有非零曲率转子值或高连续向错密度的结构状态。