Effects of Aging Temperature on the Precipitation Behavior of Ω Phase in an Al-Cu-Mg-Ag Alloy
- Resource Type
- Article
- Authors
- Yao Li; Zhiyi Liu; Qingkun Xia; Song Bai; Xu Chen
- Source
- Metals and Materials International, 17(1), pp.1-6 Feb, 2011
- Subject
- 재료공학
- Language
- English
- ISSN
- 2005-4149
1598-9623
Microstructures and mechanical properties of an Al-Cu-Mg-Ag alloy aged for 1 h at temperatures in a range 25 °C to 450 °C were characterized in the present work by means of hardness tests, electrical conductivity measurements, and transmission electron microscopy (TEM). In-situ X-ray diffraction (XRD) was also employed to examine the precipitation behavior of Ω phase in a temperature range of 25 °C to 400 °C The in-situ Xray diffraction peak at 2θ = 26°-28° detected at elevated aging temperatures between 165 °C and 400 °C was attributed to the formation of Ω phase. TEM observations demonstrated the existence of Ω phase in the alloy when aged for 1 h at temperatures in a range 145 °C to 450 °C.