高重力对 GH4169 合金 δ 相成核和析出的影响

IF 5.3 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Scripta Materialia Pub Date : 2024-10-13 DOI:10.1016/j.scriptamat.2024.116409

Jiahui Wang , Xinbao Zhao , Fangjie You , Quanzhao Yue , Wanshun Xia , Yuefeng Gu , Ze Zhang

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引用次数: 0

摘要

本研究利用悬臂高温超离心机模拟发动机涡轮盘的工作条件，系统研究了 GH4169 超级合金在 720 ℃、800 ℃ 和 850 ℃ 的 50,000 g 高重力条件下 24 小时的微观结构演变，重点研究了 δ 相的成核和析出。结果表明，合金在高重力条件下对δ相的成核和析出有适度的抑制作用。γʹʹ相的粗化变化使δ相失去了成核部位，无法通过γʹʹ相向δ相的转变而析出。这项研究为超级合金在极端条件下的应用和优化提供了新的见解和经验支持。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Effects of high gravity on the nucleation and precipitation of δ phase of GH4169 alloy

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Effects of high gravity on the nucleation and precipitation of δ phase of GH4169 alloy

Using a cantilever high-temperature ultracentrifuge to simulate working conditions of engine turbine disk, this study systematically investigates the microstructural evolution of GH4169 superalloy under 50,000 g high gravity condition at 720 °C, 800 °C and 850 °C for 24 h, focusing on the nucleation and precipitation of δ phase. The results reveal that the alloy exhibits moderate suppression of nucleation and precipitation of δ phase under high gravity. The changes in the coarsening of γʹʹ phase makes δ phase lose its nucleation site and can't precipitate through the transformation from γʹʹ to δ phase. This research offers new insights and empirical support for superalloy applications and optimization under extreme conditions.

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来源期刊

Scripta Materialia 工程技术-材料科学：综合

CiteScore

11.40

自引率

5.00%

发文量

581

审稿时长

34 days

期刊介绍： Scripta Materialia is a LETTERS journal of Acta Materialia, providing a forum for the rapid publication of short communications on the relationship between the structure and the properties of inorganic materials. The emphasis is on originality rather than incremental research. Short reports on the development of materials with novel or substantially improved properties are also welcomed. Emphasis is on either the functional or mechanical behavior of metals, ceramics and semiconductors at all length scales.