Abstract

A large number of factors have an effect on the features and conditions of bainitic (intermediate) transformations in titanium alloys, namely: the type of phase diagram, the position of the eutectoid temperature, the eutectoid composition, the temperature of the start of martensitic transformation, and the rate of diffusion processes. This review provides a detailed analysis of the changes in these factors depending on the position of alloying metals in the periodic table of elements and highlights their influence on the course of bainitic transformations. The main reactions that influence the processes related to bainitic transformations are analyzed, and the main schemes of the formation of bainitic (intermediate) structures in titanium alloys are given. The crystallographic features of bainitic structures are considered, and a classification of intermetallic compounds that form in titanium alloys during the formation of bainitic structures is described. The review provides experimental data related to the features of the formation of bainitic (intermediate) structures in a broad class of titanium alloys with alloying metals belonging to Groups 5-11 of the periodic table of elements (Ti–V, Ti–Nb, Ti–Ta, Ti–Cr, Ti–Mo, Ti–W, Ti–Mn, Ti–Re, Ti–Fe, Ti–Ru, Ti–Os, Ti–Rh, Ti‒Co, Ti–Ni, Ti–Pd, Ti–Cu, Ti–Ag, and Ti–Au alloys).

中文翻译：

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钛合金中的贝氏体转变

摘要

许多因素都会影响钛合金中贝氏体（中间）相变的特征和条件，即：相图的类型，共析温度的位置，共析成分，马氏体转变开始温度。 ，以及扩散过程的速度。这篇综述根据元素周期表中合金金属的位置，对这些因素的变化进行了详细的分析，并着重指出了它们对贝氏体转变过程的影响。分析了影响与贝氏体转变有关的过程的主要反应，并给出了钛合金中贝氏体（中间）结构形成的主要方案。贝氏体结构的晶体学特征被考虑了，并描述了在贝氏体组织形成期间在钛合金中形成的金属间化合物的分类。该综述提供了与多种钛合金中贝氏体（中间）结构形成特征有关的实验数据，这些合金与属于元素周期表（Ti-V，Ti-Nb，Ti的5-11组）的合金金属–Ta，Ti–Cr，Ti–Mo，Ti–W，Ti–Mn，Ti–Re，Ti–Fe，Ti–Ru，Ti–Os，Ti–Rh，Ti‒Co，Ti–Ni，Ti–Pd ，Ti-Cu，Ti-Ag和Ti-Au合金）。