摘要
采用金相法和JEM-2010电镜研究了含镧高纯钢的相变。结果表明:固溶镧对γ→α相变影响显著,镧可细化铁素体晶粒。在冰盐水中淬火后,含镧高纯钢中γ→α多型性转变按块状相变方式进行,铁素体晶界不规则,呈块状,有时呈条片状或针状。
Purity steel containing La was investigated by means of metallographic analysis and transmission electron microscopy （JEM-2010）. The result showed that the effect of solution La on γ→α phase transformation was remarkable. Element La refines the ferrite grains. During the quenching in the iced brine, La makes γ→α transformation proceed according to massive transformation mechanism. The ferrite grain boundary is irregular. The ferrite grain is massive, sheetlike and acicular. La promots the formation of massive structure.
出处
《钢铁研究学报》
CAS
CSCD
北大核心
2007年第5期76-79,88,共5页
Journal of Iron and Steel Research
基金
內蒙古自治区科技攻关项目(20030201)
关键词
高纯钢
块状组织
镧
purity steel
massive structure
La
