在β-Ti合金中使用电子反射散射 difraktion 确定α片面的方向
Petr Harcuba1, Jana Šmilauerová1, Miloš Janeček1
1Department of Physics of Materials, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16Prague 2, Czech Republic.
概括
这项研究确定了Timetal LCB.中的一个转移稳定的β-矩阵中的α片状的空间方向. 研究人员精确地绘制了轮内阿尔法相的结晶学方向.
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.
- 晶体学 晶体学是指结晶学.
背景情况:
- 像Timetal LCB这样的超稳定β-合金在航空航天和生物医学应用中至关重要.
- 了解微观结构,特别是β矩阵内的α片状的方向,是预测合金性质的关键.
- 阿尔法和β相之间的晶体关系影响机械行为和相变动力学.
研究的目的:
- 为了确定一个转移稳定的β- (β-Ti) 矩阵中的α片状的空间方向.
- 为了精确地定义六角紧密包装 (α) 格子在α片内的晶体学方向.
- 为了确定老年Timetal LCB中的α和β阶段之间的晶体关系.
主要方法:
- 使用了小角度X射线散射 (SAXS) 的组合.
- 使用扫描电子显微镜 (SEM) 进行微观结构成像.
- 应用电子反射散射衍射 (EBSD) 用于结晶学方向分析.
主要成果:
- 确定了α轮的习惯平面接近{111}β.
- 将这些习惯平面与六边形α相坐标系中的 (1320) α相关联.
- 确定最长的α叶片方向大约沿着平行于习惯平面的110β方向.
- 在立方 β 和六角 α 坐标系中成功索引了 α 轴的所有主要轴和面.
结论:
- 在Timetal LCB的β-Ti矩阵内,已经精确地确定了α片状的结晶学方向.
- 这些发现为α/β相关系提供了详细的理解,这对于合金设计和性能预测至关重要.
- 这项工作为复杂合金中的结晶学特征的索引建立了一个框架.
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