相关实验视频
Updated: Sep 16, 2025

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Determining the Mechanical Strength of Ultra-Fine-Grained Metals
Published on: November 22, 2021
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一个状γ-TiAl合金的研磨变形行为
Jiale Qin1,2, Mengxi Xu1,2, Renci Liu2
1School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, China.
Materials (Basel, Switzerland)
|July 12, 2025
概括
研磨-- (γ-TiAl) 合金会导致表面层曲,变形深度与研磨深度相关. 了解这种机制有助于加工这些关键部件.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 表面工程是什么?表面工程是什么?
背景情况:
- -- (γ-TiAl) 合金对于高温应用至关重要,因为它们具有出色的特异性强度和抗爬能力.
- 在研磨过程中表面损伤显著降低了γ-TiAl合金组件的机械性能和使用寿命.
- 在研磨过程中控制γ-TiAl合金表面微结构变形的精确机制尚未完全阐明.
研究的目的:
- 在研磨过程中,系统地研究特定的γ-TiAl合金 (Ti-45Al-2Nb-2Mn-1B at.%) 的表面层的变形行为.
- 了解研磨参数和叶片方向对得到的表面微观结构的影响.
- 为改善组件加工提供关于研磨诱导的变形机制的基本见解.
主要方法:
- 在Ti-45Al-2Nb-2Mn-1B (at.%) 合金中对表面叶片变形的实验性研究.
- 与研磨方向和表面正常相对应的叶片曲角度 (φ) 的分析.
- 变形深度 (h) 的表征作为研磨深度的函数.
- 在研磨后形成的不同表面层的微观结构检查.
主要成果:
- 表面的叶片表现出曲,曲角 (φ) 取决于叶片与研磨方向和表面正常相对的方向.
- 叶片变形深度 (h) 主要由研磨深度控制.
- 确定了三种不同的表面层:精细平衡的谷物区域,曲的板状区域 (滑带,堆叠断层) 和近表面变形区域 (位移).
结论:
- 这项研究阐明了在g-TiAl合金研磨过程中叶片曲机制.
- 叶片的方向和磨砂深度是影响表面变形的关键因素.
- 这些发现为优化γ-TiAl合金组件的加工过程提供了关键的理论指导.
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