銲後熱處理對時效鈦合金EBW銲件之顯微組織與機械性質影響

Abstract

本實驗藉由不同條件之熱處理方式來探討Ti-6Al-4V合金薄板在不同條件的熱處理對其機械性質之影響，並藉由EBW銲接製程來探討Ti-6Al-4V合金在銲前與銲後熱處理對其材料的影響。 銲後透過不同溫度之應力消除及固溶時效熱處理研究顯示，銲後應力消除具有時效處理之效果，且應力消除選定之溫度及時間與時效處理之選定溫度及時間相近，因而有相同的微觀組織，且銲後經應力消除熱處理之銲件並不會影響其強度及韌性。

Ti-6Al-4V alloy at different observation of welding heat treatment before influence on their mechanical characteristic and microstructure, followed by electron beam welding study the effect of heat-treatment process before and after the welding together with the microstructure and mechanical property investigation of welded sample. The optimal heat-treatment parameters can therefore be obtained by the above test results. The results of the heat-treatment study conducted under varied stress-relief temperatures and Solution aging treatment have shown that Effect of stress-relief with aging treatment after welding, and stress-relief the selected temperature and time and the aging treatment of selected temperature and time are similar, therefore has the same microstructure, and stress relief heat treatment after welding weld does not affect their strength and toughness.