Transactions of Materials and Heat Treatment

Title：Effects of heat treatment on microstructure and mechanical properties for joint of Ti2AlNb/Ti60 dual alloys

Authors： GUO Fan GUO Hong-zhen YAO Ze-kun TIAN Hong-jie ZHAO Zhang-long

Unit： Northwestern Polytechnic University

KeyWords： Ti2AlNb/Ti60 dual alloys heat treatment microstructure mechanical property

ClassificationCode：TG166.5

year,vol(issue):pagenumber：2013,38(3):137-140

Abstract：

Effects of different heat treatment schemes on microstructure and mechanical properties for weld joint of Ti2AlNb/Ti60 dual alloys after connecting and forging were investigated. The results show that: heat treatment schemes play a small role in phase composition of heat-affected zone of Ti60 alloy, but a large role in phase morphology, size and amount; along with the increase of solution temperature or solution time, the strength of the sample increases while the plastic decreases；microstructure of weld joint of Ti2AlNb/Ti60 dual alloys is optimized after the heat treatment scheme 990℃/1h+750℃/4h, and the strength and the plastic are higher than that of Ti60 alloy, and good strength and plastic matching at room temperature or 600℃ high temperature are showed in Ti2AlNb/Ti60 dual alloys.

Funds：

国家自然科学基金资助项目（51175431）

Reference：

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