• Optimizing Thermomechanical Processing for Producing Bulk Fine-Grained Aluminum Alloy with Thermal Stability

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Metadata

Document Title

Optimizing Thermomechanical Processing for Producing Bulk Fine-Grained Aluminum Alloy with Thermal Stability

Name from Authors Collection

Punyafu J.

|

Domrong C.

|

Patakham U.

Scopus Author ID

55342394400

ORCID ID

0000-0002-3678-0622

|

Murayama M.

|

Banjongprasert C.

Scopus Author ID

23468381800

ORCID ID

NULL

Affiliations

Department of Physics and Materials Science, Chiang Mai University, Chiang Mai, 50200, Thailand; Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka, 816-8580, Japan; National Metal and Materials Technology Center, National Science and Technology Development Agency, Pathum Thani, 12120, Thailand; Department of Materials Science and Engineering, Virginia Tech, Blacksburg, 24061, VA, United States; Center of Excellence in Materials Science and Technology, Chiang Mai University, Chiang Mai, 50200, Thailand

Source Title

Materials

ISSN

19961944

Volume

18

Issue

17

Open Access

All Open Access; Gold Open Access; Green Open Access

Publisher

Multidisciplinary Digital Publishing Institute (MDPI)

DOI

10.3390/ma18174180

Abstract

This study investigates the thermal stability of fine-grained structures achieved through different severe plastic deformation (SPD) and heat treatment paths. Bulk fine-grained Al-0.1Sc-0.1Zr (wt%) alloy was produced via equal channel angular pressing (ECAP) using routes Bc or C, with aging before or after the ECAP. Electron back-scattered diffraction (EBSD) and transmission electron microscopy (TEM) analyses demonstrate excellent thermal stability of all four specimens. They maintain mean grain sizes below 5 μm after a 10 h thermal test at 450 °C, attributed to the presence of nano Al3(Sc,Zr) precipitates within the microstructures. Route Bc in the ECAP method forms more stable high-angle grain boundaries (HAGBs) than route C. Whether aging occurs before or after the ECAP, similar microstructural changes are observed after thermal testing, allowing fine-tuning of the microstructure depending on the application or subsequent processes. © 2025 by the authors.

License

CC BY

Rights

Authors

Publication Source

Scopus

Publication Source

Scopus

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