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By means of deformation and long term aging, the stability and phase equilibrim characteristic of the C+N synthetically strengthening austenitic Fe-Cr-Mn (W,V) alloy were investigated. Experimental results indicate that the austenitic alloy remains stability and no γ→α transformation occurs under 500℃. Synthetic addition of C and N causes the grains to refine and powerfully retards formation of ?martensite and precipitation of a phase. M, point is elevated with long term aging at elevated temperature (500-700℃) due to a large number of strain induced carbides precipitate. Along with accelerated decomposition of strain induced α’ martensite and occurrence of recrystallization, γ→α transformation and σ phase precipitation are promoted so that austenite becomes unstable.
By means of deformation and long term aging, the stability and phase equilibrim characteristic of the C + N synthetically strengthened austenitic Fe-Cr-Mn (W, V) alloy were investigated. Experimental results indicate that the austenitic alloy remains stability and no γ → α transformation occurs at 500 ° C. Synthetic addition of C and N causes the grains to refine and powerfully retards formation of? martensite and precipitation of a phase. M, point is elevated with long term aging at elevated temperature (500-700 ° C) due along with accelerated decomposition of strain induced α ’martensite and occurrence of recrystallization, γ → α transformation and σ phase precipitation are promoted so that austenite becomes unstable.