摘要
In Fe-20Cr-4Al-Y alloys with (0.13～0.73) wt% Y,Y-containing phase was observed.Its Y content and crystal structure were identical with those Of YFe_9 phase basically,and microhardness was 4～5 times higher than that of α-phase matrix.The phase can strongly prevent grain growth and dislocation annihilation,and trap impurity atoms,as a result,and inhibit the embrittlement caused by treating over 1000℃.
In Fe-20Cr-4Al-Y alloys with (0.13～0.73) wt% Y,Y-containing phase was observed.Its Y content and crystal structure were identical with those Of YFe_9 phase basically,and microhardness was 4～5 times higher than that of α-phase matrix.The phase can strongly prevent grain growth and dislocation annihilation,and trap impurity atoms,as a result,and inhibit the embrittlement caused by treating over 1000℃.
