Thermal stability and mechanical properties of mechanically alloyed Al-10Ti alloy

✍ Scribed by Liang Guoxian; Li Zhichao; Wang Erde

• Publisher: Springer
• Year: 1996
• Tongue: English
• Weight: 761 KB
• Volume: 31
• Category: Article
• ISSN: 0022-2461
• DOI: 10.1007/bf00352888

✦ Synopsis

The mechanical properties of AI-10Ti alloy prepared by mechanical alloying and subsequent hot hydrostatic extrusion were evaluated at room and elevated temperatures. Transmission electron microscopy was used to characterize the microstructural changes of this alloy on heat treatment at 500 ~ for various times. The results show that the mechanically alloyed AI-10Ti has high strength and high thermal stability at elevated temperature. The strength and stability of this alloy are attributed to its fine grain size and to the high volume fraction of small AI3Ti intermetallic compounds dispersed in the aluminium matrix. After 50 h annealing at 500 ~ no serious coarsening of either the AI3Ti dispersoids or the grains was observed.