Progress on the Microstructure and Property Regulation of Cu‐15Ni‐8Sn Alloy by Multimode Magnetic Fields and Microalloying

The Cu‐15Ni‐8Sn alloy has been widely used in aerospace, marine engineering and electronic components due to its exceptional mechanical properties, corrosion resistance and high‐temperature softening resistance. The inverse segregation and coarse microstructure that easily form during traditional casting processes significantly reduce the processing and mechanical properties of the Cu‐15Ni‐8Sn alloy after subsequent plastic deformation. The brittle discontinuous precipitates (DP) that emerge during the later stages of ageing can also significantly decrease the ductility of the Cu‐15Ni‐8Sn alloy. Therefore, introducing advanced techniques to refine the as‐cast microstructure, suppress inverse segregation and suppress DP has become essential for preparing a high‐performance Cu‐15Ni‐8Sn alloy. Multimode magnetic fields and microalloying methods are considered among the most effective techniques for regulating the microstructure. This work critically reviews the effects of multimode magnetic fields and microalloying techniques on refining the as‐cast microstructure, mitigating inverse segregation and suppressing DP in the Cu‐15Ni‐8Sn alloy, aiming to provide new insights for its high‐performance preparation.