马跃,符寒光,陈伟,雷永平

• 1:北京工业大学材料科学与工程学院

摘要(Abstract)：

利用光学显微镜,扫描电镜,电子探针显微分析仪,X衍射分析和硬度测试等手段,研究了淬火温度对铸造Fe-B-Al合金显微组织及硬度的影响。结果表明,铸造Fe-B-Al合金的凝固组织主要由铁素体、珠光体和枝晶间连续分布的网状Fe2B组成。经过900~1100℃淬火后,共晶硼化物出现断网,随淬火温度提高断网现象愈加明显,在1100℃淬火时基体转变为马氏体,网状硼化物基本断裂,并成孤立分布;在900~1050℃淬火时,硬度在37~39 HRC波动但变化不大;在1100℃淬火时,硬度出现突变,达到54.1 HRC。

关键词(KeyWords)： Fe-B-Al合金;淬火;显微组织;硬度

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51274016);; 北京市自然科学基金(2142009)

作者(Author): 马跃,符寒光,陈伟,雷永平

DOI: 10.13289/j.issn.1009-6264.2015.04.030

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