Precipitate Mechanism of Ω Phase in 2024 Aluminum Alloys

Zhao Yunlong

doi:10.15980/j.tzzz.2014.08.015

Views : 0 下载量: 158 CSCD: 1

Export
Share
Collection
Album

Precipitate Mechanism of Ω Phase in 2024 Aluminum Alloys
Vol. 34, Issue 8, Pages: 896-898(2014)
Published： 2014 ，
DOI： 10.15980/j.tzzz.2014.08.015

扫描看全文

[1]赵云龙.Ω相在2024铝合金中的析出机制[J].特种铸造及有色合金,2014,34(08):896-898.

Zhao Yunlong. Precipitate Mechanism of Ω Phase in 2024 Aluminum Alloys. [J]. Special Casting & Nonferrous Alloys 34(8):896-898(2014)
[1]赵云龙.Ω相在2024铝合金中的析出机制[J].特种铸造及有色合金,2014,34(08):896-898. DOI： 10.15980/j.tzzz.2014.08.015.

Zhao Yunlong. Precipitate Mechanism of Ω Phase in 2024 Aluminum Alloys. [J]. Special Casting & Nonferrous Alloys 34(8):896-898(2014) DOI： 10.15980/j.tzzz.2014.08.015.

摘要

无银2024铝合金是重要的可析出强化型合金

通过多级时效和室温下冷轧加工可促使Ω-Al2Cu相在该系合金中大量析出。利用透射电镜（TEM）、能谱分析等手段

研究了Ω相在无银的2024铝合金中的析出机制。结果表明

多级时效和室温冷轧联合处理是促使Ω相析出的有效手段。上述工艺处理过程中Mg原子浓度的降低和时效后期T相周围大量存在的形核点是促使Ω相大量析出的主要原因。

Abstract

2024aluminum alloy with Ag-free is an important precipitation strengthened alloys.TheΩphase can be precipitated by cold rolled at room temperature and duplex ageing.The precipitation mechanisms ofΩphase in 2024 aluminum alloy was explored by transmission electron microscopy（TEM）

energy spectrum analysis and other methods.The results demonstrate that duplex ageing and cold rolled technigue are the effective process to promote the precipitation ofΩphase.The concentration decrease of Mg and a large number of nucleation sites around Tphase are mainly responsible for the precipitation ofΩphase.

关键词

Ω相2024铝合金析出行为高角环形暗场像

Keywords

Ω Phase2024 Aluminum AlloysPrecipitate BehaviorHAADF

references

Alert me when the article has been cited

提交

Effects of Cu Content on Creep Behavior and Microstructure of Al-Cu-Mg-Ag Alloy