2017 Volume 58 Issue 4 Pages 619-622
A chromium-based duplex alloy is proposed for a novel class of alloys for hot and harsh environments. The alloy is defined as a duplex microstructure comprised of a hard and high-strength chromium-based BCC (α) phase and a ductile FCC (γ) phase to overcome the brittleness of the conventional α-Cr alloy. The candidate composition of the alloy was selected from a Cr-Fe-Ni ternary system, and the mechanical properties were evaluated. The abrasion and corrosion properties of a surface-remelted chromium-based duplex alloy were compared with those of a Co-based cladding alloy (Bishilite® No. 6), and the results suggested its potential use as a wear and corrosion resistant cladding.