9Cr氧化物弥散强化钢电阻点焊接头组织与拉伸剪切性能研究

IF 3.1 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Science and Technology of Welding and Joining Pub Date : 2023-07-18 DOI:10.1080/13621718.2023.2233174

Xin Jia, Shitong Wei, S. Lu

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引用次数: 0

摘要

采用电阻点焊连接9Cr氧化物弥散强化钢，研究了不同焊接参数对焊接效果的影响。在实验参数范围内，随着焊接电流的增大，失效载荷和能量从4.3 kN、1.0 J增加到6.8 kN、7.5 J，而随着电极力的增大，失效载荷和能量先从6.8 kN、3.8 J下降到近4 kN、1.2 J，然后保持稳定。当焊接电流超过12.8 kA时，失效模式由沿熔合线拉出失效变为部分沿熔合线拉出失效，部分沿母材拉出失效。焊接电流和电极力对接头的力学性能和断裂方式有较大影响。

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Investigation on microstructure and tensile shear properties of 9Cr oxide dispersion strengthened steel resistance spot welded joint

Resistance spot welding is employed to join the 9Cr oxide dispersion strengthened steel and the effects of different welding parameters are studied. Within the ranges of parameters used in this experiment, the failure load and energy increased from 4.3 kN, 1.0 J to 6.8 kN, 7.5 J as the welding current increased, while as the electrode force increased, the failure load and energy first decreased from 6.8 kN, 3.8 J to nearly 4 kN, 1.2 J, then remained stable. As the welding current exceeded 12.8 kA, the failure mode changed from pull out failure along the fusion line to the pull out failure along the fusion line partially and base metal partially. The welding current and electrode force strongly affect the mechanical properties and fracture mode of the joint.

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来源期刊

Science and Technology of Welding and Joining 工程技术-材料科学：综合

CiteScore

6.10

自引率

12.10%

发文量

审稿时长

1.7 months

期刊介绍： Science and Technology of Welding and Joining is an international peer-reviewed journal covering both the basic science and applied technology of welding and joining. Its comprehensive scope encompasses all welding and joining techniques (brazing, soldering, mechanical joining, etc.) and aspects such as characterisation of heat sources, mathematical modelling of transport phenomena, weld pool solidification, phase transformations in weldments, microstructure-property relationships, welding processes, weld sensing, control and automation, neural network applications, and joining of advanced materials, including plastics and composites.