热变形白口铸铁颗粒状碳化物的形成  

FORMATION OF GRANULAR CARBIDES IN WHITE CAST IRON THROUGH HOT DEFORMATION

作　　者：刘建华[1] 张端军 杨庆祥[1] 张明[1] 宋诚忠[2] 

机构地区：[1]燕山大学 [2]秦皇岛首钢板材有限公司

出　　处：《钢铁研究》1998年第1期26-29,共4页Research on Iron and Steel

摘　　要：探讨了热变形白口铸铁中颗粒状碳化物的形成，结果表明：尺寸较大的碳化物来源于铸态中棒状碳化物；尺寸较小的碳化物直接从基体中形核；尺寸介于两者之间的碳化物来自热变形诱发析出，且变形量越大则细小的颗粒状碳化物数量越多。This paper deals with the granular carbides formed from hot deformation in white cast iron. The experimentel results show that carbides of large size are formed from bar-like shape carbides,those of small size directly nucleate in the matrix.Carbides with the size between the above are formed from procipitation induced by hot deformation.The bigger the deformation is,the larger the number of microsized granular carbides is.

关 键 词：热变形 白口铸铁 碳化物 颗粒状 

分 类 号：TG143.1[一般工业技术—材料科学与工程]