The semi-solid ZCuSn10P1 alloy slurry was prepared by strain induced melting activation（SIMA）based on cold rolling and remelting method

and effects of forming specific pressure on microstructure and formability of the ZCuSn10P1 alloy were investigated.The results reveal that effects of different extrusion process parameters on the microstructure of the rheological squeeze casting are different.With extrusion rate of 14mm/s

the microstructure of formed parts exhibits relatively desirable

and the deformation of solid-liquid is satisfied at 150 MPa.At the same time

the liquid fraction

the solid particle roundness and the average grain diameter reach 27.6%

1.52

80.21μm

respectively.During the rheological semi-solid Tin bronze extrusion process

at the forming specific pressure of 150 MPa

the liquid fraction of the parts from top to bottom is increased from 20.1%to 33.2%

and liquid phase segregation can be observed at the bottom parts

and distribution of the solid and liquid phase has poor uniformity.