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Updated: Jun 24, 2025

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Determining the Mechanical Strength of Ultra-Fine-Grained Metals
Published on: November 22, 2021
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对基超合金的粒度边界分离工程的计算方法
Haruna Uruchida1, Yuhki Tsukada2, Yusuke Matsuoka1
1Department of Materials Design Innovation Engineering, Graduate School of Engineering, Nagoya University, Furo-Cho, Chikusa-Ku, Nagoya, 464-8603, Japan.
Scientific reports
|June 6, 2024
概括
在颗粒边界 (GB) 上的 (B) 分离显著提高了基超合金的爬行破裂强度. 本研究介绍了一种计算方法,用于设计GB化学,以提高合金性能.
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.
- 计算材料科学科学 计算材料科学
背景情况:
- 谷物边界 (GB) 强化元素如 (B),碳 (C) 和 (Zr) 添加到基超级合金中.
- 量化强化效应和确定GB化学的设计原则仍然具有挑战性.
研究的目的:
- 为基超级合金中的粒度边界 (GB) 分离工程提出一个实际的计算方法.
- 量化GB化学对合金性能的增强作用.
主要方法:
- 使用CALPHAD数据库考虑将GB组合划分为共存的阶段.
- 使用计算的GB组成作为回归特征预测的爬行破裂强度.
主要成果:
- 在大多数研究的合金中,发现 (B) 和 (Mo) 富含GBs.
- 回归分析证实了GBsB分离的显著增强效应.
- 为GB分离工程开发了一个计算框架.
结论:
- 该研究提供了一种计算方法,用于优化基超合金中的GB化学.
- 在GBs的 (B) 丰富是增强爬行破裂强度的关键因素.
- 这种方法可以设计具有改进机械性能的超级合金.
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