DEFORMATION MARTENSITE IN METASTABLE REGION OF Fe-Mn-Al-Cr SYSTEM
TIAN Xing; ZHANG Yansheng (Institute of Metal Research; Academia Sinica; Shengyang) (Manuscript received 10 June; 1985; revised manuscript 17 January; 1986)
Cite this article:
TIAN Xing; ZHANG Yansheng (Institute of Metal Research; Academia Sinica; Shengyang) (Manuscript received 10 June; 1985; revised manuscript 17 January; 1986). DEFORMATION MARTENSITE IN METASTABLE REGION OF Fe-Mn-Al-Cr SYSTEM. Acta Metall Sin, 1987, 23(3): 237-239.
Abstract The deformation a′-martensite in metastable Fe-Mn-Al-Cr alloys with the composition of 15—25wt-%Mn, 0-1.5wt-%Al, 0-0.4wt-%C and 0-1.2wt-%Cr has been studied by means of tensile tests at room temperature and -196℃. The following relationship between the quatity of deformation a′-martensite and the degree of deformation was confirmed: ln[a′/(1 -a′)]=lnA+Klnψ Statistical analysis shows that either lnA or K vary with the composition of alloys linearly at room temperature or-196℃.