Microstructure and mechanical property evolutions of CuNi10Fe1.8Mn1 alloy tube produced by HCCM horizontal continuous casting during drawing and its deformation mechanism

Heating-cooling combined mold (HCCM) horizontal continuous casting was used to produce Ф70 mm × 3.5 mm CuNi10Fe1.8Mn1 alloy tubes. The as-cast tube had good surface quality, strong axial columnar grains and high elongation to failure of 45%, and can be directly drawn without surface treatment. The maximum cumulative cold deformation amount reached 94%. For the small deformation amount (