CAJ | 학술논문

通过研究508-Ⅲ钢焊缝及热影响区在经历不同焊后热处理和层间温度后的力学性能和金相组织，找出焊后热处理温度、保温时间、层间温度等参数对低合金钢焊接接头机械性能的影响规律，并最终得出整个焊接过程中各工艺阶段所需的温度区间及与保温时间的最佳组合，而且通过金相分析得出金相组织转变对焊接接头性能的影响规律，以帮助改善焊后热处理工艺质量。
통과연구508-Ⅲ강한봉급열영향구재경력불동한후열처리화층간온도후적역학성능화금상조직，조출한후열처리온도、보온시간、층간온도등삼수대저합금강한접접두궤계성능적영향규률，병최종득출정개한접과정중각공예계단소수적온도구간급여보온시간적최가조합，이차통과금상분석득출금상조직전변대한접접두성능적영향규률，이방조개선한후열처리공예질량。
In this essay, after weld area and heat affacted zone of 508-III low alloy steel experiencing different post-weld heat treatment and inter-pass temperature, the mechanical properties and micro-structural evolution were investigated. The rule has been researched out about the influence of the post-weld heat treatment temperature, holding time and inter-pass temperature on mechanical properties. Each temperature range and optimized combination with holding time have been ultimately obtained for each stage of the whole welding process. By means of metallographic analysis, it concludes the rule about the effect of metallographic transition upon the mechanical property of weld joint, which is better to improve the quality of post-weld heat treatment.