CHEN N N,ZHANG G W,ZHANG Y G,et al. Effects of quenching on microstructure and properties of Cu-Pb-Sn/Fe bimetals[J]. Special Casting & Nonferrous Alloys,2024,44(3):333-338.
CHEN N N,ZHANG G W,ZHANG Y G,et al. Effects of quenching on microstructure and properties of Cu-Pb-Sn/Fe bimetals[J]. Special Casting & Nonferrous Alloys,2024,44(3):333-338. DOI: 10.15980/j.tzzz.2024.03.008.
In order to achieve a high-strength combination of copper/steel bimetals and avoid problems such as interface cracking and copper layer detachment, the traditional solid-liquid composite casting was combined with the quenching process to investigate the effect of quenching on microstructure and mechanical properties of the copper/steel bimetallic interface. The results indicate that the quenching process accelerates the cooling rate, and the α-Cu phase dendrites are refined. With the quenching temperature of 800 ℃, Pb particles are refined and uniformly distributed with the decrease of grain size on the copper side of fine grain region, increasing the grain boundaries of the α-Cu, where the inter-diffusion distance of copper /steel bimetallic atomic is increased to 11.95 μm, and the shear strength reaches the highest value of 247.2 MPa, obtaining desirable mechanical properties.
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