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<p>Dissimilar joining of WC–Co to Inconel 600 was carried out using a Cu–Zn filler alloy through a brazing process under argon atmosphere. The effect of processing parameters, including temperature (950, 980, and 1000&#xa0;°C) and holding times (15, 25, and 35&#xa0;min), were studied in terms of microstructural evolution and mechanical response. Scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) demonstrated a continuous interface with copper diffusion into the Inconel substrate and localized formation of chromium-rich carbides near the WC–Co side. At higher temperatures and intermediate holding times, porosity and voids were minimized. Shear strength tests revealed a maximum value of ~ 44&#xa0;MPa at 1000&#xa0;°C and 25&#xa0;min. These results highlight the influence of process optimization and interfacial phenomena in the development of reliable joints, providing insights into the design of high-temperature and wear-resistant ceramic–metal brazed systems.</p> Graphical abstract <p></p>

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Brazing of WC–Co to Inconel 600 using Cu–Zn alloy under argon atmosphere: Microstructural characterization and mechanical properties

  • 期刊论文

  • 发表日期：

    2025年10月22日

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  • J. Lemus-Ruiz,
  • G. Castro-Sánchez,
  • V. S. López-Álvarez,
  • J. L. Cabezas-Villa

摘要

Dissimilar joining of WC–Co to Inconel 600 was carried out using a Cu–Zn filler alloy through a brazing process under argon atmosphere. The effect of processing parameters, including temperature (950, 980, and 1000 °C) and holding times (15, 25, and 35 min), were studied in terms of microstructural evolution and mechanical response. Scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) demonstrated a continuous interface with copper diffusion into the Inconel substrate and localized formation of chromium-rich carbides near the WC–Co side. At higher temperatures and intermediate holding times, porosity and voids were minimized. Shear strength tests revealed a maximum value of ~ 44 MPa at 1000 °C and 25 min. These results highlight the influence of process optimization and interfacial phenomena in the development of reliable joints, providing insights into the design of high-temperature and wear-resistant ceramic–metal brazed systems.

Graphical abstract