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β凝固TiAl合金β/B2相演变行为及控制研究进展
Research Progress on Evolution Behavior and Control of β/B2 Phase in β-solidified TiAl Alloy
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- DOI:
- 作者:
- 杨劼人
YANG Jieren
- 作者单位:
- 四川大学材料科学与工程学院
School of Materials Science and Engineering, Sichuan University
- 关键词:
- TiAl 合金； β 凝固；冷却；时效；相变
TiAl alloy; β-solidifying; cooling; aging; phase transformation
- 摘要:
- β/B2 相是 β 凝固 TiAl 合金中的重要组成相，对合金的力学性能有显著影响。 β/B2 相的形成、分解和转变
受合金成分、冷却过程、时效参数等多重因素影响，其演变规律和机制较为复杂。 围绕 β/B2 相演变及控制，结合高 Nb-
TiAl 合金，综述了 β/B2 相及其衍生相在受控冷却和时效过程中形成、分解和转变的规律及机制研究。
β/B2 phase is an important component phase in β-solidified TiAl alloy, which has a significant effect on the
mechanical properties of the alloy. The formation, decomposition and transformation of β/B2 phase are affected by many
factors, such as alloy composition, cooling process and aging parameters. Its evolution law and mechanism are complicated.
In this paper, the evolution and control of β/B2 phase and the mechanism of β/B2 phase formation, decomposition and
transformation during controlled cooling and aging in high Nb-TiAl alloy are reviewed, which can provide reference for the
fine-tuning of β-solidified TiAl alloy microstructure.