Abstract
A high-strength Fe85Ni15 alloy with lath martensitic structure was obtained by the self-propagating high-temperature synthesis technique. After tempering at 500°C for 2h, the hardness increased from 3.8 to 5.1GPa, and the compression yield strength increased from about 1100 to 1500MPa without much sacrifice of ductility. The strengthening effect might be attributed to the evolution of lath martensitic morphology and the reverse martensitic transformation.
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