沈奎,卢立华,廖舒纶,麻晗

• 1:江苏省(沙钢)钢铁研究院
• 2:江苏沙钢集团有限公司

摘要(Abstract)：

对铌钒微合金化高碳钢的奥氏体晶粒尺寸、连续冷却转变动态曲线(CCT图)以及等温转变曲线(TTT图)进行了测定,研究加热温度、冷却速度和保温温度对组织性能的影响。结果表明:实际生产中,应将加热温度控制在1100℃以下,避免奥氏体晶粒的粗化;相变前冷速控制在8 K/s以上,相变温度为620~650℃,相变温度区间内冷速控制在1.0~2.5 K/s,可获得均匀的索氏体组织和较好的性能。

关键词(KeyWords)： 晶粒度;热模拟;控制冷却;显微组织

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 沈奎,卢立华,廖舒纶,麻晗

DOI: 10.13289/j.issn.1009-6264.2014.s2.029

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