摘要
γ-TiAl alloys with a low density and a high specific stiffness are preferred structural materials for weight saving of aircraft engines. The present paper deeply reviewed the flow behavior and constitutive equations of γ-TiAl alloys compressed at elevated temperature. Deformation processing parameters, deformation history and adjusted preheating treatment, chemical composition and initial microstructures are the main factors that determine the flow behavior of γ-TiAl alloys compressed at elevated temperature. The constitutive models describing flow stress-strain curves are segmented into genres, such as empirical models, models coupled with different softening mechanisms, and models about deformation mechanisms. The Arrhenius model and H-S model were deeply discussed. Also, constitutive model including softening mechanism and models involving deformation mechanisms were summarized and analyzed. It can be predicted that the emphasis on further research in γ-TiAl alloys is to establish constitutive models involving multiphase coordinated deformation mechanisms.
投稿的翻译标题 | γ-TiAl合金高温塑性变形力学行为及本构模型的研究进展 |
---|---|
源语言 | 英语 |
页(从-至) | 1406-1414 |
页数 | 9 |
期刊 | Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering |
卷 | 48 |
期 | 5 |
出版状态 | 已出版 - 1 5月 2019 |