关于老化温度对Ti-38644转变稳定的β型合金微观结构和性能的影响的研究
Peiyue Li1, Xinqi Zhang1, Xingyu Liu1
1Luoyang Ship Material Research Institute, Luoyang 471000, China.
Materials (Basel, Switzerland)
|August 28, 2025
概括
优化β型合金 (Ti-38644) 的热处理提高了机械性能. 通过结合强化机制,对粒边界的αs阶段的控制沉显著增加了产量强度 (σs).
科学领域:
- 材料科学
- 金属工程
- 物理化学
背景情况:
- 超稳定的β型合金对于高性能应用至关重要.
- 了解相沉是定制合金特性的关键.
- Ti-38644合金的微观结构影响其机械反应.
研究的目的:
- 调查Ti-38644中相的沉行为.
- 分析固体溶液老化对αs相形态和分布的影响.
- 确定αs阶段沉和机械性能之间的关系,特别是度 (σs).
主要方法:
- 在760°C进行固体溶液处理,持续一个小时.
- 在450°C和470°C进行10小时的老化处理.
- 阶段分布的微结构分析和量化 (面积百分比).
- 测试机械性能以测量产力 (σs).
主要成果:
- 固体溶液处理导致主要是β阶段,在粒边界分离.
- 在成熟后,偏好在粒边界沉的针状αs阶段.
- 将老化温度从450°C提高到470°C增加了αs相位面积的百分比 (42.36%增加到57.34%).
- 随着老化温度的提高,度 (σs) 从967 MPa增加到1211 MPa.
结论:
- 在谷物边界的αs阶段沉受到老化温度的强烈影响.
- 增加的αs相含量与增强的度 (σs) 直接相关.
- 脱位强化 (σρ) 和沉硬化共同有助于改善σs,验证热处理策略.
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