逯红果,王壮壮,殷凤仕,冯柳,薛冰,马中钢

• 1:山东理工大学化学工程学院
• 2:山东理工大学机械工程学院
• 3:山东理工大学分析测试中心
• 4:山东瑞泰新材料科技有限公司

摘要(Abstract)：

采用扫描电镜、透射电镜和X-射线衍射仪研究了ZG1Cr11Ni2WMoV马氏体耐热钢在不同热处理后的显微组织和力学性能。结果表明:铸态经580℃×2 h空冷回火后,显微组织由板条状回火马氏体和沿原奥氏体晶界分布的δ-铁素体组成,在δ-铁素体周围分布着连续网状的M_(23)C_6型碳化物,碳复型透射电镜分析发现在马氏体板条内分布有纳米尺寸M_6C-型碳化物;与铸态直接回火相比,经1050℃×1 h空冷淬火再经580℃×2 h空冷回火后,δ-铁素体含量减少且主要呈球状分布在回火马氏体基体上;1050℃×1 h空冷淬火处理对室温拉伸性能提高不大,但能显著提高室温冲击性能。

关键词(KeyWords)： δ-铁素体;回火;马氏体耐热钢;冲击断裂

Abstract:

Keywords:

基金项目(Foundation): 淄博市校城融合发展计划(2017ZBXC082);; 山东省自然科学基金面上项目(ZR2016EMM01)

作者(Author): 逯红果,王壮壮,殷凤仕,冯柳,薛冰,马中钢

DOI: 10.13289/j.issn.1009-6264.2017-0547

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