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超重力下的沉降过程与固态相变
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浙江大学材料科学与工程学院高温合金研究所

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基金项目:

国家自然科学基金项目(面上项目,重点项目,重大项目)


Sedimentation process and phase transition of solids under high gravity
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Affiliation:

Institute of Superalloys Science and Technology,School of Materials Science and Engineering,Zhejiang University

Fund Project:

The National Natural Science Foundation of China (General Program, Key Program, Major Research Plan)

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    摘要:

    本文介绍了超离心状态下固体中沉降过程的最新进展以及未来应用前景,主要涉及高温超速离心设备、互溶体系以及化合物材料中的超重力固态相变。近90%的固态超速离心实验是在世界第一台(熊本大学)与第二台(日本原子能研究所)高温超速离心机上、通常以500℃以下的温度与1000000g的最大离心加速度条件运行。强大的超重力场和温度场诱导材料中出现原子级梯度结构、晶粒生长与细化、空位聚集等现象,并产生了新的物相结构与特性。浙江大学建造了一种实验温度高达1200℃的新型悬臂式高温超速离心机,为模拟高温合金在航空发动机运行环境中的合金成分、微观结构和性能演变提供了设备基础。

    Abstract:

    The recent progress and future prospects for ultra-centrifugal sedimentation in solids are described in this article, mainly for equipment, miscible systems and compounds. Almost 90% ultracentrifugation experiments have been performed on the 1st and 2nd high-temperature ultracentrifuge which typically operate at temperatures below 500 ℃ and maximum centrifugal acceleration up to 1,000,000 g. The strong gravitational and temperature fields induce atomic-scale graded structure, grain growth and refinement, voids accumulation caused by the atomic sedimentation in miscible systems, while new structures, properties and substances are produced in some compounds. A new cantilever high-temperature ultracentrifuge with a temperature of up to 1200 ℃ is under construction at Zhejiang University, making it possible to simulate the composition, microstructure and property evolution of superalloys in the operating environment of aircraft engines.

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王嘉晖,赵新宝,岳全召,尤方杰,夏万顺,谷月峰,张泽.超重力下的沉降过程与固态相变[J].稀有金属材料与工程,,().[Jiahui Wang, Xinbao Zhao, Quanzhao Yue, Fangjie You, Wanshun Xia, Yuefeng Gu, Ze Zhang. Sedimentation process and phase transition of solids under high gravity[J]. Rare Metal Materials and Engineering,,().]
DOI:10.12442/j. issn.1002-185X.20230811

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历史
  • 收稿日期:2023-12-13
  • 最后修改日期:2024-01-05
  • 录用日期:2024-02-01
  • 在线发布日期: 2024-03-22
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