Effect of Extrusion Ratio on the Microstructure and Mechanical Properties in an Al-Cu-Mg-Ag Alloy

被引：0

作者：

徐晓峰 ^{[1
]}

赵宇光 ^{[1
]}

ZHANG Ming ^{[1
]}

NING Yuheng ^{[1
]}

WANG Xudong ^{[1
]}

机构：

[1] Key Laboratory of Automobile Materials, Ministry of Education, and Department of Materials Science and Engineering, Jilin University

来源：

JournalofWuhanUniversityofTechnology(MaterialsScience) | 2018年 / 33卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Al alloy; extrusion ratio; grain refinement; precipitation; microstructure;

D O I：

暂无

中图分类号：

TG146.21 []; TG379 [有色金属及合金挤压];

学科分类号：

080201 ; 080502 ; 080503 ;

摘要：

In order to examine the effect of extrusion ratio on the microstructure and mechanical behavior in Al-Cu-Mg-Ag alloy, the Al-6.3 Cu-0.48 Mg-0.4 Ag alloy was subjected to extruding with different extrusion ratios of 17, 30 and 67. The results indicate that the grains are refined and the strength is improved effectively with increasing extrusion ratio. However, further investigation shows that the extrusion ratio of 30 is more effective than the lower extrusion ratio(17) and the higher extrusion ratio(67) to refine the grains in the T6-temper alloy. Moreover, the sample with an extrusion ratio of 30 obtains more precipitates and superior mechanical properties after T6 treatment. This study supports the idea that there exists a critical extrusion ratio for grain refinement and improvement of mechanical properties for the T6-temper alloy. Recrystallization and precipitation during T6 treatment were introduced to explain the effects of extrusion ratio on the microstructure and mechanical properties of the Al-Cu-Mg-Ag alloys.

引用

页码：710 / 714

页数：5

共 19 条

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