Effect of Cold Compression and Heat Treatment on Microstructure and Mechanical Properties of Al-Zn-Mg-Cu Alloyure and mechanical properties of Al-Zn-Mg-Cu alloy

Xiaodong ZHAO; Wenjie WANG; Yueping FANG; Yajie LI; Fengming QIN

doi:10.5755/j02.ms.36394

Authors

Xiaodong ZHAO Taiyuan University of Science and Technology https://orcid.org/0009-0007-1976-5600
Wenjie WANG Taiyuan University of Science and Technology https://orcid.org/0009-0005-9116-4602
Yueping FANG China National Erzhong Group Deyang Wanhang Die Forging Co.LTD https://orcid.org/0009-0001-4728-0287
Yajie LI Taiyuan University of Science and Technology https://orcid.org/0009-0003-4574-3975
Fengming QIN Taiyuan University of Science and Technology https://orcid.org/0000-0002-1416-5602

DOI:

https://doi.org/10.5755/j02.ms.36394

Keywords:

Al-Zn-Mg-Cu alloy, thermomechanical treatment, precipitation behavior, microstructure, microhardness

Abstract

The microstructural evolution of Al-Zn-Mg-Cu alloy under different stress and aging temperature was studied using cold compression and heat treatment. The relationship between the process parameter and the microstructure of the material was analyzed by OM, EBSD, and TEM. The results showed that the grain size decreased and the recrystallization fraction increased with the increase of compression. Textures of <111>||X (cubic), <110>//Y, Goss have higher intensity after solution treatment, but their intensity and proportion also decrease with the increase of compression. η' is the main precipitate in the alloy aged at 140 °C, while η is the main precipitate in the alloy aged at 160°C. Precipitation coarsening and grain refinement affect the microhardness of the alloy together.

Effect of Cold Compression and Heat Treatment on Microstructure and Mechanical Properties of Al-Zn-Mg-Cu Alloyure and mechanical properties of Al-Zn-Mg-Cu alloy

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DOI:

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