Jianxun GONG
金属学报(英文版)
High boron hardfacing alloys reinforced with primary M2B phases on Q235 steel plates were prepared by the method of flux-cored wire submerged arc welding. The microstructure and boride morphology were investigated using optical microscopy (OM), scanning electron microscopy (SEM) and X-ray diffraction (XRD). The effect of WC/W2C on the microstructure was discussed. It indicated that the volume fraction of primary M2B phases has increased due to good nucleated cores of incompletely molten W2C particles provided by casting tungsten carbide or decarburizing reaction of WC powders. Abrasion resistance was evaluated by wet sand rubber wear tests and the wear mechanism was studied using SEM. It shows that primary M2B grains play a key role in improving abrasion resistance.
关键词:
primary M2B phases
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纪红
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孙凤仙
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李永丰
表面技术
doi:10.3969/j.issn.1001-3660.2010.01.024
为研究建筑铝型材的耐磨性测试方法,采用喷磨试验仪对铝合金建筑型材进行了测试,并考察了其平均耐磨性.选用特定的磨料,控制空气压力、流速等参数,测得铝型材的喷磨时间,将其与标准试样的喷磨时间相比,通过计算可获得建筑铝型材的平均耐磨性.结果表明:喷磨试验法可用于检测氧化、电泳、粉末喷涂等不同表面处理膜层的耐磨性,且具有操作简单、方便,试验时间短,重现好等特点,有望在今后的检测实践中推广使用.
关键词:
铝型材
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耐磨性
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喷磨试验法
