Cr12冷作模具钢碳化物组织均匀性分析与改善西华大学材料科学与工程学院(610039)杨湄【K1】介绍了冷作模具钢中带状碳化物组织存在的原因,以及不均匀的碳化物组织对机械性能的影响。阐述了消除和改善Cr12钢中带状碳化物组织的热处理工艺。1oMCr12钢碳化物热处理Analysis and Improvement of Carbide Structure Homogeneityin Cr12 Cold-worked Die SteelAbstractThe reason of existence of banding Carbide structure in Cr12 cold-worked die steel and the influ-ence of asymmetric carbide structure on mechanical behaviour were introduced. The heat treatment technologyfor eliminating and improvement of banding carbide structure in Cr12 steel was represented.KeywordsCr12 steel, carbide, heat treatmentms|:TG457.1DSM:BCr12,cC(1. 4 2.3 %)vCr(11 13 %),MoV 。R/15H,(MA。L=3,/15eVPYvs,(l5)。m1/1Y3.1. 2/1)Cr12,FHiVV,yN,1e/FK,/FHY9FHWsHWFHWHW=63 12)Cr12/Hel/h =0.6 0.8aR,7O-RHMp7。3)Y-,3_8_,?shZ_。3.1. 3|1)。FV,F,2)(1)500 550 ,2 3 h,2)800 850 ,1 2 h),6F1 100 1 150 ,x1.5 2.0 min,S1 030 1 060 ,840 880 ,3_E,;H1S“21”#“2(”(S、,W,sM(,()T15,850 ,(F),i#H|。2)|。F850 870 ,2 4 h。F100 /h,V720 740 ,3 6 h,30 /hV500 Vb。)wLnm2 。V),h。YF、F-),VPm2)wLr%l、(s,LBF。3)Cr123rM_AF,nm3 ,(5)。、|),AFnm4,(2 3),AFf8+。Vm3m4Vn,Cr12,(A。3Cr12jPp1q63 4q。m3r-m4V)4Cr12(FVv。t,c,7A,B,AZ_、s,9v7。(Fbk ,HRCYv。Cr12(VYV|ZTh,3_ZTT,。ID 1.)/400.:,2002. 2L/WI.Pp.:, 2000. 3,M.m.:8, 2002.3I gC34 / F/!2005M12