Mechanical properties, phase composition, and structure of test melts of high-strength pseudo-β-titanium alloyed with yttrium and gadolinium are studied. Special features of the morphology of REM oxide particles and their distribution within the alloy structure are considered. Quantitative metallographic analysis of the structural components is conducted. Sizes of primary β-grains, volume fraction of secondary α-phase precipitates, secondary precipitate particle content, and α-phase shell thickness are determined. Test specimen fracture surfaces are analyzed, and presence of a ductile pitted relief is detected in fractures.

中文翻译：

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含稀土元素的高强度伪β-钛合金实验组合物的结构相组成和力学性能

研究了与钇和钆合金化的高强度拟β-钛的力学性能、相组成和测试熔体的结构。考虑了 REM 氧化物颗粒形态的特殊特征及其在合金结构中的分布。对结构部件进行定量金相分析。确定了初级 β 晶粒的尺寸、次级 α 相沉淀物的体积分数、次级沉淀物颗粒含量和 α 相壳厚度。分析试样断裂表面，并在断裂中检测到韧性凹坑的存在。