李俊儒,周乐育,龚臣,陈列,佐辉,刘雅政

• 1:北京科技大学材料科学与工程学院
• 2:西宁特殊钢股份有限公司

摘要(Abstract)：

通过在不同加热温度和保温时间下等温奥氏体化,研究了10Cr12Ni3Mo2VN马氏体耐热钢奥氏体晶粒长大行为。结果表明:900~1150℃温度区间内,10Cr12Ni3Mo2VN马氏体耐热钢奥氏体晶粒尺寸随加热温度升高、保温时间延长而增大,且随保温时间延长,晶粒尺寸均匀性下降;由于碳氮化物在1100℃以上发生溶解,1100℃以上奥氏体晶粒发生粗化;1200~1280℃温度区间内,由于δ铁素体相的析出,10Cr12Ni3Mo2VN马氏体耐热钢奥氏体晶粒尺寸随加热温度升高而减小。拟合得到900~1150℃温度区间内10Cr12Ni3Mo2VN钢奥氏体晶粒生长模型为D=6.67×107×t0.303×exp(-1.81×105/RT)。

关键词(KeyWords)： 10Cr12Ni3Mo2VN钢;奥氏体;晶粒生长模型;δ铁素体

Abstract:

Keywords:

基金项目(Foundation): 国家“863”计划项目(2012AA03A502)

作者(Author): 李俊儒,周乐育,龚臣,陈列,佐辉,刘雅政

DOI: 10.13289/j.issn.1009-6264.2014.s1.021

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