Rapid assessment of interfacial stabilization mechanisms of metastable precipitates to accelerate high-temperature Al-alloy development

Bharat Gwalani; Jia Liu; Sten Lambeets; Matthew Olszta; Jonathan Poplawsky; Amit Shyam; Arun Devaraj

doi:10.1080/21663831.2022.2102947

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Rapid assessment of interfacial stabilization mechanisms of metastable precipitates to accelerate high-temperature Al-alloy development

Original reports | 更新时间：2026-08-19

- Rapid assessment of interfacial stabilization mechanisms of metastable precipitates to accelerate high-temperature Al-alloy development
- Rapid assessment of interfacial stabilization mechanisms of metastable precipitates to accelerate high-temperature Al-alloy development
- 材料研究快报（英文） 2022年10卷第12期页码：771-779
- 作者机构：
  
  1. a Physical and Computational Sciences Directorate Pacific Northwest National Laboratory Richland
  2. b Energy and Environmental Directorate Pacific Northwest National Laboratory Richland
  3. c Oak Ridge National Laboratory Center for Nanophase Materials Sciences Oak Ridge
  4. d Materials Science & Technology Division Oak Ridge National Laboratory Oak Ridge
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2022.2102947
  中图分类号：
- 网络首发：2022-07-30，
  
  纸质出版：2022
- 稿件说明：
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Bharat Gwalani, Jia Liu, Sten Lambeets, 等. Rapid assessment of interfacial stabilization mechanisms of metastable precipitates to accelerate high-temperature Al-alloy development[J]. 材料研究快报（英文）, 2022,10(12):771-779.

Bharat Gwalani, Jia Liu, Sten Lambeets, et al. Rapid assessment of interfacial stabilization mechanisms of metastable precipitates to accelerate high-temperature Al-alloy development[J]. Materials Research Letters, 2022, 10(12): 771-779.
Bharat Gwalani, Jia Liu, Sten Lambeets, 等. Rapid assessment of interfacial stabilization mechanisms of metastable precipitates to accelerate high-temperature Al-alloy development[J]. 材料研究快报（英文）, 2022,10(12):771-779. DOI： 10.1080/21663831.2022.2102947.

Bharat Gwalani, Jia Liu, Sten Lambeets, et al. Rapid assessment of interfacial stabilization mechanisms of metastable precipitates to accelerate high-temperature Al-alloy development[J]. Materials Research Letters, 2022, 10(12): 771-779. DOI： 10.1080/21663831.2022.2102947.

摘要

Abstract

Precipitate strengthened high-temperature alloys are currently used in safety-critical applications. Understanding precipitate stability and solute segregation mechanisms at high temperatures is key to designing high-strength alloys. Rapid

in-situ

approaches

therefore

are pivotal in accelerating the alloy design process. Hereby using the test case of a promising high-temperature Al-Cu-Mn-Zr alloy

we demonstrate the value of

in-situ

atom probe tomography coupled with

in-situ

transmission electron microscopy to reveal atomic-scale mechanisms that lead to the emergence of non-equilibrium solute segregation. Mn and Zr segregation at strengthening precipitate(

θ’)

-matrix interface increases the kinetic barrier for phase transformation thus retaining high-temperature strength.

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相关机构

c Shaanxi Key Laboratory of Electrical Materials and Infiltration Technology School of Materials Science and Engineering Xi'an University of Technology

b Chongqing Innovation Center Northwestern Polytechnical University

a State Key Laboratory of Solidification Processing Northwestern Polytechnical University Xi'an People’s Republic of China

a State Key Laboratory of Solidification Processing Northwestern Polytechnical University

c Department of Materials Design Institute of Hydrogen Technology Helmholtz-Zentrum Hereon GmbH

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