Microstructural evolution of nanotwinned Al-Zr alloy with significant 9R phase

N. A. Richter; Y. F. Zhang; D. Y. Xie; R. Su; Q. Li; S. Xue; T. Niu; J. Wang; H. Wang; X. Zhang

doi:10.1080/21663831.2020.1840451

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Microstructural evolution of nanotwinned Al-Zr alloy with significant 9R phase

Original Reports | 更新时间：2026-08-19

- Microstructural evolution of nanotwinned Al-Zr alloy with significant 9R phase
- Materials Research Letters Vol. 9, Issue 2, Pages: 91-98(2021)
- 作者机构：
  
  1. a School of Materials Engineering Purdue University West Lafayette
  2. b Mechanical and Materials Engineering University of Nebraska-Lincoln,Lincoln
  3. a School of Materials Engineering Purdue University West Lafayette IN USA
  4. c School of Electrical and Computer Engineering Purdue University West Lafayette
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2020.1840451
  CLC：
- Online First：24 November 2020，
  
  Published：2021
- 稿件说明：
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N. A. Richter, Y. F. Zhang, D. Y. Xie, et al. Microstructural evolution of nanotwinned Al-Zr alloy with significant 9R phase[J]. Materials Research Letters, 2021, 9(2): 91-98.
DOI：

N. A. Richter, Y. F. Zhang, D. Y. Xie, et al. Microstructural evolution of nanotwinned Al-Zr alloy with significant 9R phase[J]. Materials Research Letters, 2021, 9(2): 91-98. DOI： 10.1080/21663831.2020.1840451.

摘要

Abstract

luminum (Al) alloys have a multitude of applications

notably in the automotive

aerospace and coating industries

yet they exhibit significantly lower mechanical strength than conventional steels. Nanotwins drastically improve mechanical strength while retaining ductility. However

the high SFE of Al largely prevents twinning. Here

we synthesize Al-Zr alloy films containing an abundance of incoherent twin boundaries and 9R phases. These alloys exhibit an extended solid solubility of Zr

retaining a columnar nanotwinned structure across all compositions. These films reach a hardness up to 4.2 GPa with 10 at% Zr and demonstrate the capacity for producing strong Al alloys with nanotwins.

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Related Institution

d Key Laboratory for Light-weight Materials Nanjing Tech University

c Inter-University 3D Atom Probe Tomography Unit City University of Hong Kong

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State Key Laboratory of Powder Metallurgy Central South University

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