near weld zone

基本解釋

The diffusion zone width of main alloying elements increases and hardness of the friction weld zone near TC4 titanium alloy side improves after post-weld heat treatment.
經(jīng)焊后回火熱處理后，主要合金元素沿焊合區(qū)的擴(kuò)散區(qū)寬度增大；焊合區(qū)鈦合金側(cè)硬度值顯著提高。
The appearence characteristics of the heterogenous mixture zone near the bottom of weld metal in the fusion welded joint are studied through metallographic observations of many fusion welded joints.
通過時(shí)大量熔化焊接頭的金相觀察，研究了熔化焊接頭焊縫底部附近“不均勻混合區(qū)”的形貌特征。