汪圣林,崔丽,贺定勇,王智慧,蒋建敏

• 1:北京工业大学材料科学与工程学院
• 2:北京市生态环境材料及其评价工程技术研究中心

摘要(Abstract)：

观察采用药芯焊丝堆焊方法在Q235钢基体上制备了含Cr含量分别为12%、14%、16%和18%的Fe-Cr-B-C系耐磨合金。对堆焊合金进行600℃热处理,研究了不同Cr含量对焊态和热处理后堆焊合金的显微组织和磨粒耐磨性能的影响。结果表明,堆焊合金硬质相主要为(Fe,Cr)23(B,C)6,焊态基体组织为马氏体和残留奥氏体,热处理后基体组织为回火索氏体;当Cr含量达到14%,硬质相(Fe,Cr)23(B,C)6高温下稳定;Cr含量对堆焊合金热处理后磨损性能有很大影响,含12%Cr堆焊合金的相对耐磨性由焊态的10.65下降到2.08,耐磨性只有焊态的19.5%,而16%Cr的堆焊合金热处理后耐磨性为9.08,具有良好的耐磨性能。

关键词(KeyWords)： 堆焊合金;热处理;显微组织;耐磨性能

Abstract:

Keywords:

基金项目(Foundation): 北京市教育委员会科技项目(PXM2014_014204_07_000040)

作者(Author): 汪圣林,崔丽,贺定勇,王智慧,蒋建敏

DOI: 10.13289/j.issn.1009-6264.2015.10.036

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