张志强,白玉洁,徐连勇,韩永典,荆洪阳

• 1:中国民航大学航空工程学院
• 2:天津大学材料科学与工程学院

摘要(Abstract)：

综合考虑UNS S32750超级双相不锈钢冷金属过渡与脉冲(CMT+P)单道焊缝的宏观形貌、成形系数及铁素体/奥氏体两相比例等因素，探究了保护气类型、焊接速度、送丝速度及CMT/P比值等工艺参数对焊缝成形质量的影响规律。结果表明：UNS S32750超级双相不锈钢最优的CMT+P单道焊接工艺参数为：Ar保护气(流量15 L/min)、焊接速度为3～5 mm/s、送丝速度为8 m/min、CMT/P比值为1/32～1/64。以优化的单道焊接工艺参数范围为指导，成功制备了成形质量良好的UNS S32750双相不锈钢CMT+P对焊接头。

关键词(KeyWords)： 双相不锈钢;CMT+P;焊接工艺参数;焊缝成形

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51905536);; 航空科学基金(2020Z049067002);; 天津市教委科研计划项目(2020KJ020);; 中国民航大学实验技术创新基金(2021CXJJ84)

作者(Author): 张志强,白玉洁,徐连勇,韩永典,荆洪阳

DOI: 10.13289/j.issn.1009-6264.2022-0201

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