电子束流对1J22/1Cr18Ni9Ti异种金属电子束焊接接头组织性能的影响

熊梧尧; 臧义虎; 喻岚; 唐华; 谢吉林

doi:10.3969/j.issn.1674-6457.2026.03.013

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精密成形工程 ›› 2026, Vol. 18 ›› Issue (3) : 115-124. DOI: 10.3969/j.issn.1674-6457.2026.03.013

先进连接技术

电子束流对1J22/1Cr18Ni9Ti异种金属电子束焊接接头组织性能的影响

熊梧尧¹, 臧义虎², 喻岚¹, 唐华¹, 谢吉林^2,*

作者信息 +

Effect of Electron Beam Current on Microstructure and Properties of 1J22/1Cr18Ni9Ti Dissimilar Metal Electron Beam Welded Joints

XIONG Wuyao¹, ZANG Yihu², YU Lan¹, TANG Hua¹, XIE Jilin^2,*

Author information +

文章历史 +

摘要

目的研究采用电子束焊接技术焊接1J22/1Cr18Ni9Ti异种金属时电子束流对焊接接头组织性能的影响规律。方法采用电子束焊接技术焊接了1J22软磁合金和1Cr18Ni9Ti不锈钢异种金属,并采用光学显微镜（OM）、扫描电镜（SEM）等组织分析手段和力学性能测试方法研究了电子束流对1J22软磁合金和1Cr18Ni9Ti不锈钢异种金属电子束焊接接头组织和性能的影响。结果在所有选择的电子束流下,均获得了焊缝成形优良、无裂纹、无气孔等焊接缺陷的异种金属焊接接头。异种金属焊缝的凝固模式为FA模式,在该凝固模式下,合金初生δ相组织为骨架状,能够有效抑制γ相枝晶的生长,起到细化晶粒、减少元素偏析的作用。力学性能测试结果表明,束流13 mA为最优参数,异种金属焊接接头抗拉强度和延伸率分别为839 MPa和11.1%,达到1Cr18Ni9Ti母材的121.3%和13.6%。结论 1J22软磁合金和1Cr18Ni9Ti不锈钢异种金属具有较好的电子束焊接工艺适应性,采用成本较低的不锈钢替代部分1J22软磁合金在制造工艺上具有可行性。

Abstract

The work aims to investigate the influence of electron beam current on the microstructure and properties of welded joints during electron beam welding of 1J22/1Cr18Ni9Ti dissimilar metals. Electron beam welding was employed to join 1J22 soft magnetic alloys and 1Cr18Ni9Ti stainless steel dissimilar metals. The effects of electron beam current on the microstructure and properties of the dissimilar metal electron beam welded joints were studied by optical microscopy (OM), scanning electron microscopy (SEM), and mechanical property testing methods. Under all selected electron beam currents, dissimilar metal welded joints with excellent weld formation and free from welding defects such as cracks and porosity were obtained. The solidification mode of the dissimilar metal weld was the FA mode. Under this solidification mode, the primary δ-phase structure of the alloy exhibited a skeletal morphology, which could effectively inhibit the growth of γ-phase dendrites, resulting in grain refinement and reduced elemental segregation. Mechanical property testing results indicated that the beam current of 13 mA was the optimal parameter, with the tensile strength and elongation of the dissimilar metal welded joint reaching 839 MPa and 11.1%, respectively, equivalent to 121.3% and 13.6% of the 1Cr18Ni9Ti base material. In conclusions, 1J22 soft magnetic alloys and 1Cr18Ni9Ti stainless steel dissimilar metals demonstrate good adaptability to electron beam welding process. It is technically feasible to replace part of 1J22 soft magnetic alloys with lower-cost stainless steel in manufacturing applications.

导出引用

熊梧尧, 臧义虎, 喻岚, 唐华, 谢吉林. 电子束流对1J22/1Cr18Ni9Ti异种金属电子束焊接接头组织性能的影响[J]. 精密成形工程. 2026, 18(3): 115-124 https://doi.org/10.3969/j.issn.1674-6457.2026.03.013

XIONG Wuyao, ZANG Yihu, YU Lan, TANG Hua, XIE Jilin. Effect of Electron Beam Current on Microstructure and Properties of 1J22/1Cr18Ni9Ti Dissimilar Metal Electron Beam Welded Joints[J]. Journal of Netshape Forming Engineering. 2026, 18(3): 115-124 https://doi.org/10.3969/j.issn.1674-6457.2026.03.013

中图分类号： TG456.3

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