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纸质出版日期： 2024-07-25 ，
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雷智刚，夏天东，王晓军，等.ERNiCrMo-3焊丝组织性能及内部织构研究［J］.电焊机，2024，54（7）：38-45.
LEI Zhigang, XIA Tiandong, WANG Xiaojun, et al.Research on Microstructure Properties and Internal Texture of ERNiCrMo-3 Welding Wire[J].Electric Welding Machine, 2024, 54(7): 38-45.
对比研究了国内外三种不同ERNiCrMo-3焊丝的表面质量、显微组织、内部织构及其力学性能。结果表明：三种焊丝的平均松弛直径差异较小，国外焊丝（3#）的夹杂物尺寸在三种焊丝中最小（0.047mm），其中1#中夹杂物面积比2#（0.533％）小49.9%。三种焊丝均出现孪晶组织，且国内焊丝（1#）孪晶界占比最大（9.02%），而国外焊丝（3#）最小（1.85%）。孪晶界占比的差异可能影响焊丝的力学性能。三种焊丝在｛111｝和｛110｝晶面均具有明显的择优取向，3#的｛111｝晶面织构密度达到最大值23.75。抗拉强度最大（1 537 MPa）的3#比抗拉强度最小的1#高近40.6%，并且3#中晶界强化贡献了324.48 MPa。
In this paper
the surface quality
microstructure
internal texture and mechanical properties of three ERNiCrMo-3 welding wires at home and abroad were compared and studied. The results showed that the average relaxation diameter of the three welding wires was small
and the inclusion size of the 3# ERNiCrMo-3 welding wire was the smallest (0.047mm) among the three welding wires
and the inclusion area in 1# was 49.9% smaller than that of 2# (0.533%). Twin microstructure appeared in all three ERNiCrMo-3 wires
and the twin boundary accounted for the largest proportion (9.02%) in 1#
and the 3# (1.85%) with the fewest twin boundary was nearly 79.49% less than 1#. The three welding wires of 1#
2#
and 3# all have obvious preferred orientation in the {111} and {110} crystal faces
and the texture density of the {111} crystal faces of 3# reaches a maximum of 23.75. The 3# with the largest tensile strength (1537MPa) is nearly 40.6% higher than the 1# (domestic) with the smallest tensile strength
and the grain boundary strengthening in 3# contributes 324.48MPa.
ERNiCrMo-3焊丝表面质量显微组织择优取向力学性能
ERNiCrMo-3 welding wireSurfacemicrostructuremerit-based orientationMechanical properties
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