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在冶炼含稀土Ce的2Cr13不锈钢时采用Fe-Ce中间合金代替纯Ce以获得较满意的收得率,然后对试样进行锻造及热处理,最后通过对试样进行显微组织观察及析出相的成分分析,来研究稀土Ce的残留量及对2Cr13不锈钢组织的影响。结果表明:添加Fe-Ce中间合金可以使2Cr13不锈钢中稀土的收得率达35%以上。稀土Ce的加入影响Fe-Fe3C相图中各相区的位置,在相同的淬火加热温度下出现了铁素体组织,并且含Ce量越多,得到的铁素体组织越多。Ce还可以有效减少钢中碳化物的偏聚和析出。
In the smelting of 2Cr13 stainless steel containing rare earth Ce Fe-Ce master alloy instead of pure Ce to obtain a more satisfactory yield, and then forging and heat treatment of the sample, and finally through the microstructure of the sample was observed and precipitated phase Component analysis to study the residual amount of rare earth Ce and 2Cr13 stainless steel tissue. The results show that the yield of rare earth in 2Cr13 stainless steel can reach above 35% by adding Fe-Ce master alloy. The addition of rare earth Ce affects the location of each phase in the Fe-Fe3C phase diagram. The ferrite structure appears at the same quenching temperature, and the more the Ce content, the more the ferrite structure is obtained. Ce can also effectively reduce the segregation and precipitation of carbides in steel.