轧制工艺对微合金钢EH420变形奥氏体中碳氮化物析出的影响  

Effect of Rolling Process on Carbo-Nitride Precipitation of Microalloy Steel EH420

作　　者：王洪[1] 张艳艳[1] 刘小林[2] 蔡庆伍[1] 

机构地区：[1]北京科技大学高效轧制国家工程研究中心,北京100083 [2]新余钢铁有限责任公司,新余338001

出　　处：《特殊钢》2006年第4期16-18,共3页Special Steel

摘　　要：采用电子显微分析和物理化学相定量分析技术,研究了在900～1 000℃变形量40％-60％轧制后Nb-V-Ti-B和Nb-V-Ti微合金化钢EH420中碳氮析出物的大小、数量和形貌。试验结果表明,900℃轧制时,钢中析出碳氮化物数量较1 000℃轧制时多;变形量由40％增至60％时,析出碳氮化物数量增加,平均尺寸减小;Ti、Nb碳氮化物在整个轧制过程均有析出,V的碳氮化物只存在较低温度变形时析出。The size, amount and morphology of carbo-nitride precipitated in Nb-V-Ti-B and Nb-V-Ti microalloy steel EH420 rolling at 900 - 1 000 ℃ with deformation 40% - 60% by electron microanalysis and physical-chemistry phase analysis technique. The test results showed that the amount of carbo-nitride precipitated in steel rolling at 900 ℃ was more than that rolling at 1 000 ℃ ; with degree of deformation increased from 40% to 60%, the precipitated carbo-nitride amount increased while average size decreased; and Ti-Nb carbo-nitride precipitated at whole rolling course, but V carbo-nitride precipitated only at lower rolling temperature.

关 键 词：微合金船板钢 轧制 碳氮化物 析出 

分 类 号：TG335[金属学及工艺—金属压力加工]