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首页> 外文会议>Titanium'99: Science and Technology >INFLUENCE OF HOT DEFORMAITION AND HEAT TREATMENT REGIMES ON STRUCTURE AND MECHANICAL PROPERTIES OF TITANIUM ALLOY VT22
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INFLUENCE OF HOT DEFORMAITION AND HEAT TREATMENT REGIMES ON STRUCTURE AND MECHANICAL PROPERTIES OF TITANIUM ALLOY VT22

机译：热变形和热处理制度对钛合金VT22组织和力学性能的影响

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摘要

The evolution of the structure in the preliminary (α+β)-field deformed two-phase titanium alloy VT22 was investigated in the process of annealing at T=840°C (T_(pt)-30°C). Depending on conditions of preliminary deformation the changes occurring in the structure during annealing can be conditioned both by the occurrence of in-situ recrystallization and the discontinuous one. In the case of discontinuous recrystallization the features of the inherited influence of initial b-grains on microstructure background are suppressed completely. The investigation of mechanical properties of the VT22 alloy with polygonized and recrystallized microstructure revealed the advantage of the latter in respect to characteristics of ductility and fatigue with values of strength being similar.
机译：在T = 840°C（T_（pt）-30°C）退火过程中研究了在初始（α+β）场变形的两相钛合金VT22中组织的演变。取决于初步变形的条件，可以通过原位再结晶和不连续再结晶来调节退火过程中组织中发生的变化。在不连续重结晶的情况下，初始b晶粒对微结构背景的遗传影响的特征被完全抑制。对具有多晶化和再结晶微结构的VT22合金的机械性能的研究表明，后者在延展性和疲劳特性（强度值相似）方面具有优势。

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