Exceptional stress corrosion cracking resistance-strength synergy of Al-Zn-Mg-Cu alloys via tailored nano-sized particles

High-strength Al-Zn-Mg-Cu alloys are extensively utilized in the aeronautics sector for lightweighting, but they are notoriously susceptible to stress corrosion cracking (SCC). Herein, a novel strategy was proposed to mitigate SCC in Al-Zn-Mg-Cu alloys by manipulating nano-sized particles. Mn-bearing dispersoids significantly curbed hydrogen (H) production and infiltration into Al matrix, and T precipitates notably reduced H concentration and occupancy at grain boundaries, intermetallic compound particles and interfaces of η precipitates, which were potentially implicated in hydrogen embrittlement (HE). The synergistic effects of Mn-bearing dispersoids and T precipitates yielded an optimal balance of strength and SCC resistance in Al-Zn-Mg-Cu alloys.

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Publication Details

Journal
Materials Research Letters
Published
2025-03-19
DOI
https://doi.org/10.1080/21663831.2025.2480165
Citations
6
Primary Topic
Aluminum Alloy Microstructure Properties
Type
article
Field-Weighted Citation Impact
29.96

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article

Exceptional stress corrosion cracking resistance-strength synergy of Al-Zn-Mg-Cu alloys via tailored nano-sized particles

Kazuyuki Shimizu, Hiroyuki Toda, Hiro Fujihara, Kyosuke Hirayama et al.
6 citations
Materials Research Letters
Aluminum Alloy Microstructure Properties
29.96
article

Exceptional stress corrosion cracking resistance-strength synergy of Al-Zn-Mg-Cu alloys via tailored nano-sized particles

Kazuyuki Shimizu, Hiroyuki Toda, Hiro Fujihara, Kyosuke Hirayama, Masayuki Uesugi, Akihisa Takeuchi, Jianwei Tang, Yuantao Xu, Liang Chen, Yafei Wang
article en
6 citations

Abstract

High-strength Al-Zn-Mg-Cu alloys are extensively utilized in the aeronautics sector for lightweighting, but they are notoriously susceptible to stress corrosion cracking (SCC). Herein, a novel strategy was proposed to mitigate SCC in Al-Zn-Mg-Cu alloys by manipulating nano-sized particles. Mn-bearing dispersoids significantly curbed hydrogen (H) production and infiltration into Al matrix, and T precipitates notably reduced H concentration and occupancy at grain boundaries, intermetallic compound particles and interfaces of η precipitates, which were potentially implicated in hydrogen embrittlement (HE). The synergistic effects of Mn-bearing dispersoids and T precipitates yielded an optimal balance of strength and SCC resistance in Al-Zn-Mg-Cu alloys.

Materials Research LettersVol. 13(5)
Kyushu University (JP), Shandong University (CN), Shanghai Jiao Tong University (CN), Kyoto University (JP), Japan Synchrotron Radiation Research Institute (JP), Tottori University (JP)
Academy of Nutrition and Dietetics, Light Metals Educational Foundation
Openalex Percentile: Top 1%
Aluminum Alloy Microstructure Properties
29.96
DOIOpen Access PDFOpenAlex
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Exceptional stress corrosion cracking resistance-strength synergy of Al-Zn-Mg-Cu alloys via tailored nano-sized particles — Kazuyuki Shimizu, Hiroyuki Toda, et al. · Materials Research Letters (2025) | TGRS Research Map | TGRS