Effects of Co on Mechanical Properties and Precipitates in a Novel Secondary-Hardening Steel with Duplex Strengthening of MC and β-NiAl.

Synergistic strengthening of nano-scaled MC and β-NiAl has become a new route to develop ultra-high secondary-hardening steel. At present, the effect of Co on the synergistic precipitation behavior of duplex phases of MC and β-NiAl has been rarely reported. This paper revealed the effects of Co on the mechanical properties and duplex precipitates of MC and β-NiAl in a novel 2.