Abstract
A novel multi-metal composite with 316L stainless steel matrix and Fe-TiB2 high-modulus steel reinforcement was successfully fabricated using high-pressure torsion (HPT). After post-HPT annealing at 800 °C for 60 min, the composite demonstrated a superior combination of high specific modulus (~25.5 GPa·cm3·g−1), high yield strength (881 MPa), and good ductility (31%). The improved properties can be ascribed to the high relative density, sound metallurgical bonded 316L/Fe-TiB2 interface, ultra-fine grains and heterogeneous microstructures.
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