摘要
采用差示扫描量热仪(DSC),分析了X60管线钢在加热与冷却过程中的相变温度。结果表明:在冷却时DSC曲线上出现三个峰值,除先共析铁素体析出和珠光体转变外,还有铌或钒的碳化物析出;相变温度随冷却速度的增大而降低;在加热至950℃时,DSC曲线上出现二个峰值,除先共析铁素体溶解和奥氏体转变外,没有明显的铌或钒的碳化物峰溶入奥氏体峰。
The phase transformation temperature of X60 pipeline steel in heating and cooling process was studied by DSC method.The results show that when cooling,the three peaks of DSC curve is proeutectoid ferrite,pearlite transformation,carbide precipitation of Nb or V,respectively.The phase transformation temperature decreases with increasing cooling rate.During heating at 900 ℃,the DSC curve shows that the two peaks are pro-eutectoid ferrite dissolution,austenite transformation and the DSC curve do not has obvious peak of Nb or V carbide dissolution in austenite peak.
出处
《热加工工艺》
CSCD
北大核心
2012年第18期93-94,98,共3页
Hot Working Technology
