在合金中的加多丰富相的微结构特征
Hyung-Ha Jin1, Sangeun Kim2, I Seul Ryu1
1Material Safety Technology Research Division, Korea Atomic Energy Research Institute, 111, Daedeok-daero 989 Beon-gil, Daejeon, 34057, Republic of Korea.
Heliyon
|August 15, 2024
概括
这项研究详细介绍了 (Ti) 合金中的加多 (Gd) 阶段形成,揭示了Gd氧化物和FCC型γ-Gd. 在Gd相和Ti矩阵之间的机械性能差异会产生缺陷,使合金变弱.
科学领域:
- 材料科学 材料科学 材料科学
- 金工业是金工业的一个方面.
- 物理化学 物理化学
背景情况:
- (Ti) 合金在各种行业中至关重要.
- 了解像加多 (Gd) 这样的合金元素的行为对于优化Ti合金性能至关重要.
- 富含加多的相可以显著影响Ti合金的微观结构和性能.
研究的目的:
- 综合研究合金中加多丰富相的微观结构特征.
- 阐明这些Gd阶段的形成机制和结晶学性质.
- 分析Gd相形成对Ti-Gd合金机械性能和加工的影响.
主要方法:
- 用于合金生产的等离子弧化和热造.
- 电子显微镜 (SEM,TEM) 用于微观结构分析.
- 电子反射散射衍射 (EBSD) 和能量分散光谱 (EDS) 用于相位识别和元素映射.
- 用于晶体分析的X射线衍射 (XRD).
主要成果:
- 形成圆形/角形的加多氧化物和长长的富含Gd的颗粒.
- 鉴定FCC类型的γ-Gd阶段和Gd2O3,受氧含量影响.
- 在Gd粒中观察内部双胞胎,可能抑制转化.
- 由于热加工过程中的机械性质不匹配而导致相位接口的缺陷,削弱了Gd相位.
结论:
- 该研究提供了关于Ti合金中Gd相形成的详细见解.
- 造过程中的氧气摄入对形成的Gd相的类型起着作用.
- Gd相与Ti矩阵之间的机械性能差异导致加工缺陷和Gd相强度降低.
- 增强对Ti-Gd合金行为的理解,以帮助未来的材料开发.
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