TP347HFG钢中碳氮化物形成机理探讨  

Analysis of Reasons for Formation Mechanism of Carbide in TP347HFG Steel

作　　者：周茂华[1] 

机构地区：[1]攀钢集团江油长城特殊钢有限公司,四川江油621701

出　　处：《特钢技术》2015年第4期26-30,共5页Special Steel Technology

摘　　要：通过对TP347HFG轧制棒材中存在大量的大颗粒、链状析出物进行定性分析、高温固溶试验及理论计算得出,此类析出物是钢液在凝固过程高温段中形成的一次Nb(C、N),高温固溶、变形等方法无法改善此类析出物尺寸及形貌。A large amount of chain-like coarse precipitates were observed in bars rolled by TP347HFG ingot.Based on quality analysis, test of solid solution at high temperature and therotical calculation, it was concluded that theabove mentioned precipitates were primary Nb（C, N） formed during the solidification of molten steel, whose size andmorphlogy could not improved through high-temperature trea

关 键 词：TP347HFG Nb(C、N) 一次析出物 

分 类 号：TG142.1[一般工业技术—材料科学与工程]