Effect of Sn addition on age-hardening and precipitation behavior of Al-Mg-Si alloys with different Mg/Si ratios

被引：0

作者：

Tu, Wenbin ^{[1
,2
]}

Tang, Jianguo ^{[2
]}

Wang, Shanlin ^{[1
]}

Ma, Lehang ^{[2
]}

Zhao, Yan ^{[2
]}

机构：

[1] Nanchang Hangkong Univ, Jiangxi Key Lab Forming & Joining Technol Aerosp C, Nanchang 330063, Peoples R China

[2] Cent South Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China

来源：

CAILIAO GONGCHENG-JOURNAL OF MATERIALS ENGINEERING | 2023年 / 51卷 / 10期

关键词：

Al-Mg-Sialloy; Mg/Siratio; agingprecipitation; Snaddition; ATOM-PROBE TOMOGRAPHY; EVOLUTION;

D O I：

10.11868/j.issn.1001-4381.2022.000399

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of Sn addition on age-hardening and precipitation behavior of Al-Mg-Si alloy with different Mg/Si ratios was investigated by using the hardness test and TEM characterization. The results indicate that the addition of Sn increases the number density of precipitates of the peak-aged alloy with low Mg/Si ratio, but decreases the precipitation rate of beta ''. Hence, the hardening rate and peak aging hardness of alloy with low Mg/Si ratio decrease by the addition of Sn. During over-aging, the high precipitate densities of Sn-added alloy improve the over aging hardness of the alloy with low Mg/Si ratio. For alloy with high Mg/Si ratio, the addition of Sn not only increases the precipitate density, but also enhances the precipitation rates of beta ''. Therefore, the hardening rate and peak-aging hardness of alloy with high Mg/Si ratio increase by the addition of Sn.

引用

页码：68 / 75

页数：8

共 33 条

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