The paper presents the analysis of hot deformation behavior of Ti-6Al-2Sn-4Zr-6Mo (Ti-6246) alloy using the theory of dynamic material modeling (DMM) based on hot compression tests performed to a total true strain of 1 at the strain rates from 0.01 to 100 s⁻¹ and at the temperatures within the range between 800 and 1100 °C. The processing maps according to the Prasad’s criterion were developed. The analysis of the processing maps allowed for the placement of domains describing the areas of potentially favorable combinations of hot deformation parameters. The microstructure observations of the investigated alloy specimens after hot deformation in stability and instability areas were conducted. The optimal processing parameters for numerical modeling of Ti-6246 alloy forging were selected based on processing maps. After complex analysis of the obtained results, microstructural observations and numerical modeling of forging of selected part, the forging tests of Ti-6246 alloy were realized. The obtained product quality assessment was carried out by computed tomography non-destructive testing.

本文介绍了使用动态材料建模 (DMM) 理论对 Ti-6Al-2Sn-4Zr-6Mo (Ti-6246) 合金的热变形行为进行分析，该理论基于在总真实应变为 1 时进行的热压缩试验。应变率从 0.01 到 100 s ^-1并且在 800 到 1100 °C 之间的温度范围内。根据 Prasad 标准开发了处理图。加工图的分析允许放置描述热变形参数潜在有利组合区域的域。对所研究的合金试样在稳定和不稳定区域进行热变形后的微观结构进行了观察。基于加工图选择了Ti-6246合金锻件数值建模的最佳加工参数。通过对所得结果的综合分析、显微组织观察和选定零件锻造的数值模拟，实现了Ti-6246合金的锻造试验。获得的产品质量评估是通过计算机断层扫描无损检测进行的。