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主要研究了形变和相变交互作用对等温锻件显微组织和力学性能的影响规律。结果发现形变和相变交互作用对Ti-17合金等温锻件的显微组织、力学性能有重大影响,经1次在β相区等温形变与相变交互作用,锻件高倍组织中的α相呈鱼骨状,在两相区等温锻造后,得到有较厚α片层的网篮状组织,各项力学性能指标均较差;经β相区和α+β两相区2次以上形变和相变交互作用并在β相区等温锻造后,得到的网篮组织中的条状α细小均匀,交互作用次数愈多,α条愈细小、扭曲;如果交互作用次数少,在两相区等温锻造后只能得到具有较厚α片层的网篮组织,交互作用次数多,则得到的是细小均匀的球状α组织,但各项力学性能指标均满足要求。
The effects of deformation and phase transformation on the microstructure and mechanical properties of isothermal forgings were mainly studied. The results show that the interaction of deformation and phase transformation has a significant effect on the microstructure and mechanical properties of Ti-17 alloy isothermal forgings. After an isothermal deformation and phase transformation in the β phase, After being isothermally forged in the two-phase region, the net-like structure with a thick α-sheet was obtained, and all the mechanical properties were poor. After more than two deformations in the β phase region and the α + β two-phase region, After the alternating interaction and isothermal forging in the β-phase region, the stripe α in the obtained basket is small and uniform, the more the number of interactions is, the smaller and distorted α is. If the number of interactions is small, the isothermal forging After only a thick α sheet layer of the basket organization, the interaction frequency, you get a small uniform spherical α organization, but the mechanical properties meet the requirements of the indicators.