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Evaluation of microstructure and mechanical properties of dissimilar welding of copper alloy and stainless steel

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Abstract

The dissimilar welding of copper alloy and stainless steel was achieved with a gas tungsten arc welding method. We evaluated the mechanical properties of the post weld. The experimental results indicated that the tensile stress of the post weld of a CuCrZr/SS and OFHC/SS dissimilar joint achieved 310 and 220 MPa, respectively. The morphology of the fracture surface of the post tensile showed a dimple pattern structure; the microhardness showed a distribution of hardness 70~130 Hv in the fusion zone. Observations with a scanning electron microscope indicated that the Fe and Cr elements of stainless steel were mutually soluble in the copper substrate and confirmed that the dissimilar joint was successfully combined.

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Authors and Affiliations

  1. National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan

    Chin-Chun Chang, Ling-Hui Wu, Chin Shueh, Che-Kai Chan, I-Ching Shen & Chien-Kuang Kuan

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  1. Chin-Chun Chang
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  2. Ling-Hui Wu
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  3. Chin Shueh
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  4. Che-Kai Chan
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  5. I-Ching Shen
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  6. Chien-Kuang Kuan
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Correspondence to Chin-Chun Chang.

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Chang, CC., Wu, LH., Shueh, C. et al. Evaluation of microstructure and mechanical properties of dissimilar welding of copper alloy and stainless steel. Int J Adv Manuf Technol 91, 2217–2224 (2017). https://doi.org/10.1007/s00170-016-9956-7

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  • DOI: https://doi.org/10.1007/s00170-016-9956-7

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