INVESTIGATION OF AN Fe-Mn-Al-Cr AUSTENITIC HEAT-RESISTING STEEL 37Mn31A13Cr2MoVWNbB
ZHANG Yansheng; ZHANG Futian (Institute of Metal Research; Academia Sinica; Shenyang); GAO Hueiyou (Fushun Steel Works; Liaoning); WANG Genyuan (Hudong Ship Building Yard; Shanghai) (Manuscript received 10 March; 1983; revised manuscript 20 July; 1983)
Cite this article:
ZHANG Yansheng; ZHANG Futian (Institute of Metal Research; Academia Sinica; Shenyang); GAO Hueiyou (Fushun Steel Works; Liaoning); WANG Genyuan (Hudong Ship Building Yard; Shanghai) (Manuscript received 10 March; 1983; revised manuscript 20 July; 1983). INVESTIGATION OF AN Fe-Mn-Al-Cr AUSTENITIC HEAT-RESISTING STEEL 37Mn31A13Cr2MoVWNbB. Acta Metall Sin, 1984, 20(1): 1-8.
Abstract An attempt was made to develop a new austenitic heat-resisting steel of FeMn-Al-Cr system. An experimental steel 37Mn31A13Cr2MoVWNbB has been investigated. It was resulted that the alloy phases such as V_4C_3, NbC and M_3B_2 are found in the steel after treatment under 1150℃ 1h, W.Q.+790℃ 20h, A. C. Among them, the V_4C_3 contributes markedly to the strength of the steel toward such extent that its high temperature strength approached that of A-286. Its resistance to oxidation is obviously improved due to a less addition of Cr combined with Al. Cr can also promote the precipitation of X-phase if the steel aged for a long period up to 500h at 650℃ besides the Laves-phase. Some blades made of this steel were equipped on a turbosupercharger which has been successfully operated in a seagoing vessel for several thousands hours. It may be predicted that the developing austenitie heat-resisting steel of Fe-Mn-Al-Cr system seems to be quite a hopeful onefar certain industrial applications.
