温度和应变速率对 Al-Zn 共晶阻尼合金变形显微组织和硬度的影响

IF 2.4 4区材料科学 Q2 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Materials Testing Pub Date : 2024-01-16 DOI:10.1515/mt-2023-0293

Shuyi Wang, Song Zhang, Yonggang Xu

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引用次数: 0

摘要

摘要系统研究了温度和应变速率对 Al-Zn 共晶阻尼合金变形显微组织和硬度的影响。结果表明，变形合金主要由η-Zn分布在α-Al基体上的共晶结构组成。在变形合金的共晶结构中，η-Zn 颗粒有两种形式。第一种η-Zn 颗粒（η-ZnI）尺寸相对较大，形态不规则；另一种η-Zn 颗粒（η-ZnII）尺寸相对较小，呈分散分布。在较低温度和较高应变速率下，η-ZnI 颗粒占主导地位，而在较高温度和较低应变速率下，η-ZnII 颗粒占主导地位。随着温度的升高和应变率的降低，Al-Zn 共晶阻尼合金的硬度总体呈上升趋势。尤其是在 648 K/0.01 s-1 时，硬度值最高（达 113.07 HB）。

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

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-ZnI) have relatively large sizes and display irregular morphology; another type of η-Zn particles (η-ZnII) have relatively small sizes and are characterized by dispersion distribution. There exist predominant η-ZnI particles at lower temperature and higher strain rate while dominant η-ZnII 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.

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来源期刊

Materials Testing 工程技术-材料科学：表征与测试

CiteScore

4.20

自引率

36.00%

发文量

165

审稿时长

4-8 weeks

期刊介绍： Materials Testing is a SCI-listed English language journal dealing with all aspects of material and component testing with a special focus on transfer between laboratory research into industrial application. The journal provides first-hand information on non-destructive, destructive, optical, physical and chemical test procedures. It contains exclusive articles which are peer-reviewed applying respectively high international quality criterions.