Influences of Mo/Zr minor-alloying on the phase precipitation behavior in modified 310S austenitic stainless steels at high temperatures

Effect of Cr and Zr on phase stability of refractory Al-Cr-Nb-Ti-V-Zr high-entropy alloys

“…The role of Zr in the preventing the s-phase appearance most likely originates from a firm tendency to form its own very stable compounds. For instance, Wen et al [55] reported that a small Zr addition can inhibit the s-phase in a stainless steel during a long-term aging due to the preferable formation of a ZrC-carbide instead of a G-phase which serves as a nucleation site for the s-phase. In our case, Zr apparently suppressed the Nb 2 Al-type s-phase due to higher than Nb affinity to Al [56,57] by trapping Al into ZrAl-rich phases, namely Zr 5 Al 3 -type and ZrAlV-type C14 Laves, which had formed in the initial condition (Fig.…”

Powder metallurgy of Al0.1CoCrFeNi high-entropy alloy

“…For engineering alloys, the yield strength can be dictated by the strengthening factors like intrinsic lattice friction (σ LF ), solid solution strengthening (σ SSS ), grain boundary strengthening/Hall-Petch strengthening (σ HP ), dislocation strengthening (σ dislo ), and particle dispersion strengthening (σ disp ). The yield strength of the alloy can be predicted by using the formula given in the following equation [75,76,77,78,79]:…”

Research Progress of Alumina-Forming Austenitic Stainless Steels: A Review

“…The precipitate of σ can be avoided by reducing molybdenum, zirconium and silicon contents. Wen et al and Jang et al found that excessive molybdenum promoted the formation of the σ phase [ 55 , 86 , 93 ], and the addition of titanium also accelerated the precipitate of σ in high chromium and high nickel AFA steels [ 55 ]. Moreover, Zhou et al [ 37 ] indicated that the reduction of silicon and molybdenum content is beneficial for suppressing precipitation of the σ-phase.…”