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腐蚀科学与防护技术 2009
LASER SURFACE ALLOYING OF 40Cr STEEL WITH Ni60B POWDER AND ITS RESISTANCE TO WEAR AND CORROSION
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Abstract:
对40Cr钢进行了表面加Ni60B粉末激光合金化处理.金相、扫描电镜、X射线衍射分析,硬度测试和磨损与盐雾腐蚀实验的结果表明：合金化层的结构为熔化区、过渡区及热影响区；熔化区显微组织为胞状一树枝状晶,热影响区为极细的隐晶马氏体；激光合金化处理后的试样产生了新相Cr23C6和Cr3C2,显微硬度Hk可达到8.6 GPa,比基体提高了近3倍；耐磨性与耐蚀性都比基体有明显提高.
