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-bearin...
Saved in:
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2025-05-01
|
| Series: | Materials Research Letters |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/21663831.2025.2480165 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | 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. |
|---|---|
| ISSN: | 2166-3831 |