镍基Inconel-718合金TIG焊部分熔化区组织变化*

叶欣, 华学明, 王敏, 楼松年

MICROSTRUCTURE EVOLUTION OF PARTIALLY MELTED ZONE OF TIG WELDING JOINT OF Ni-BASED INCONEL-718 SUPERALLOY

YE Xin, HUA Xueming, WANG Min, LOU Songnian

表1 不同焊接线能量下3种状态的Inconel-718合金接头PMZ宽度

Table 1 Effect of heat inputs on PMZ width of welding joint for Inconel-718 superalloy with different treatments

Heat input / (kJ?cm-1) PMZ width /mm Wrought As-cast Homogenization 2.4 0.218±0.022 0.335±0.022 0.247±0.028 3.6 0.292±0.019 0.426±0.028 0.339±0.016 4.8 0.401±0.013 0.541±0.015 0.423±0.031