Giant hardening and formation of nanograined supersaturated solid solution in Al–Zn system

Yiming Zhong; Bo Zhang; Ling Fang; Junjie Chen; Wei Xu; Xiuyan Li

doi:10.1080/21663831.2023.2233993

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Giant hardening and formation of nanograined supersaturated solid solution in Al–Zn system

Report | 更新时间：2026-08-19

- Giant hardening and formation of nanograined supersaturated solid solution in Al–Zn system
- Materials Research Letters Vol. 11, Issue 9, Pages: 764-771(2023)
- 作者机构：
  
  1. a Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences Shenyang People’s Republic of China
  2. b School of Materials Science and Engineering University of Science and Technology of China
  3. a Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2023.2233993
  CLC：
- Online First：12 July 2023，
  
  Published：2023
- 稿件说明：
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Yiming Zhong, Bo Zhang, Ling Fang, et al. Giant hardening and formation of nanograined supersaturated solid solution in Al–Zn system[J]. Materials Research Letters, 2023, 11(9): 764-771.
DOI：

Yiming Zhong, Bo Zhang, Ling Fang, et al. Giant hardening and formation of nanograined supersaturated solid solution in Al–Zn system[J]. Materials Research Letters, 2023, 11(9): 764-771. DOI： 10.1080/21663831.2023.2233993.

摘要

Abstract

Grain refinement via severe plastic deformation (SPD) can induce the decomposition of Al–Zn supersaturated solid solution

resulting in strain softening rather than hardening. So far

it is very challenging to improve the strength of binary Al–Zn alloy by refining grains through SPD. Herein

a single-phase supersaturated solid solution nanostructure with relaxed grain boundaries has been successfully generated in Al–21.7 at% Zn alloy by cryogenic high-pressure torsion. Instead of softening

giant hardening is achieved. The nanocrystalline Al–Zn alloy with grain size of 15 nm has an ultrahigh yield strength of about 642 MPa.

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Related Institution

a Key Laboratory for Anisotropy and Texture of Materials (MoE) School of Materials Science and Engineering Northeastern University

b Institute of Metal Research Chinese Academy of Sciences

c School of Metallurgy and Material Engineering Chongqing University of Science and Technology

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