Author/Authors :
Pi، نويسنده , , D.H. and PARK، نويسنده , , J.M. and Song، نويسنده , , G.A. and Han، نويسنده , , J.H. and Lim، نويسنده , , K.R. and Yi، نويسنده , , S. and Yi، نويسنده , , S.H and Kim، نويسنده , , D.H. and Lee، نويسنده , , N.S. and Seo، نويسنده , , Y. and Kim، نويسنده , , K.B.، نويسنده ,
Abstract :
Addition of Si into a Fe70Ni15B15 ultrafine eutectic composite has a significant influence to modulate the microstructure to bimodal eutectic structure comprising lamellar- and irregular-type eutectic by suppressing the formation of the micron-scale dendrites upon solidification. The (Fe70Ni15B15)94Si4 bimodal eutectic composite presents considerably enhanced plasticity of ∼13% with high strength of ∼1520 MPa. The rotational motion of the spherical eutectic colony is considered to be a crucial factor to effectively dissipate shear localization thus improving the plastic deformability.
Keywords :
A. Composites , B. Alloy design , C. Casting , D. Microstructure
