Effects of temperature and strain rate on the deformation microstructure and hardness of Al–Zn eutectoid damping alloy

Shuyi Wang; Song Zhang; Yonggang Xu

doi:10.1515/mt-2023-0293

Article

Effects of temperature and strain rate on the deformation microstructure and hardness of Al–Zn eutectoid damping alloy

Shuyi Wang
Shuyi Wang is studying for a master’s degree in Southwest Jiaotong University since September 2021. He is focusing on the research and development of the Al–Zn damping alloys.
, Song Zhang
Song Zhang is associate professor in the Department of Metal Materials, School of Materials Science and Engineering, Southwest Jiaotong University. At present, he has presided over or conducted four projects including the National Natural Science Foundation of China, focusing on the research on refractory high-entropy alloys, damping alloys and their composites.
and Yonggang Xu
Yonggang Xu is professor and doctoral supervisor in the Department of Metal Materials, School of Materials Science and Engineering, Southwest Jiaotong University. He mainly engaged in the research and development of damping materials, focusing on the phase transformation and mechanical behavior of damping alloys, composite damping materials and the performance of damping devices.

Published/Copyright: January 16, 2024

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From the journal Materials Testing Volume 66 Issue 3

Abstract

The effects of temperature and strain rate on the deformation microstructure and hardness of Al–Zn eutectoid damping alloy was systematically investigated. The results show that the deformed alloy is mainly composed of eutectoid structure with η-Zn distributing on α-Al matrix. There are two forms of η-Zn particles in the eutectoid structure of the deformed alloy. The first type of η-Zn particles (η-Zn_I) have relatively large sizes and display irregular morphology; another type of η-Zn particles (η-Zn_II) have relatively small sizes and are characterized by dispersion distribution. There exist predominant η-Zn_I particles at lower temperature and higher strain rate while dominant η-Zn_II particles at higher temperature and lower strain rate. The hardness of the Al–Zn eutectoid damping alloy shows an overall rising trend with increase in temperature and decrease in strain rate. In particular, the highest hardness values (up to 113.07 HB) are obtained at 648 K/0.01 s⁻¹.

Keywords: Al–Zn eutectoid damping alloy; hot deformation; microstructure; η-Zn particles; hardness

Corresponding author: Song Zhang, Southwest Jiaotong University, School of Materials Science and Engineering, Chengdu, China, E-mail: songzhang@home.swjtu.edu.cn

Funding source: National Natural Science Foundation of China

Award Identifier / Grant number: No.51701167

Funding source: Natural Science Foundation of Sichuan Province

Award Identifier / Grant number: 2023NSFSC0403

Funding source: Fundamental Research Funds for the Central Universities

Award Identifier / Grant number: 2682023ZTPY007

About the authors

Shuyi Wang

Shuyi Wang is studying for a master’s degree in Southwest Jiaotong University since September 2021. He is focusing on the research and development of the Al–Zn damping alloys.

Song Zhang

Song Zhang is associate professor in the Department of Metal Materials, School of Materials Science and Engineering, Southwest Jiaotong University. At present, he has presided over or conducted four projects including the National Natural Science Foundation of China, focusing on the research on refractory high-entropy alloys, damping alloys and their composites.

Yonggang Xu

Yonggang Xu is professor and doctoral supervisor in the Department of Metal Materials, School of Materials Science and Engineering, Southwest Jiaotong University. He mainly engaged in the research and development of damping materials, focusing on the phase transformation and mechanical behavior of damping alloys, composite damping materials and the performance of damping devices.

Research ethics: Not applicable.
Author contribution: The authors have accepted responsibility for the entire content of this manuscript and approved its submission.
Competing interests: The authors states no conflict of interest.
Research funding: This work was financially supported by the National Natural Science Foundation of China (No.51701167), the Natural Science Foundation of Sichuan Province (2023NSFSC0403) and the Fundamental Research Funds for the Central Universities (2682023ZTPY007).
Data availability: The raw data can be obtained on request from the corresponding author.

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Published Online: 2024-01-16

Published in Print: 2024-03-25

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Articles in the same Issue

https://doi.org/10.1515/mt-2023-0293

Keywords for this article

Al–Zn eutectoid damping alloy; hot deformation; microstructure; η-Zn particles; hardness