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研究了不同渗铝温度及冷却方式对渗铝钢力学性能的影响,对比研究了渗铝钢、镀锌钢和原材料的耐磨特性,采用SEM及能谱仪对磨损后的物相进行了分析。力学性能结果表明:当渗铝温度降低至715~735℃时,采用空冷,可保持原材料的力学性能;耐磨失重试验表明渗铝钢的质量损失明显低于镀锌钢,其质量损失随着加载力增加而缓慢增加,当加载力从3 N增加至19 N时,渗铝钢质量损失从0.87 mg增加至2.15 mg,其最大质量损失仅为Q345的19.8%,镀锌钢的28.1%。对渗铝钢、镀锌钢和原材料磨损后的物相分析表明:渗铝钢的耐磨相为Fe-Al-O化合物,镀锌钢耐磨相为Fe-Zn合金氧化物;磨损机理分析表明,Q345的磨损主要为粘着磨损,而渗铝钢则为磨粒磨损。
The effects of different aluminizing temperature and cooling method on the mechanical properties of aluminized steel were studied. The wear resistance characteristics of aluminized steel, galvanized steel and raw materials were studied. The worn phases were analyzed by SEM and EDS . The results of mechanical properties show that when the aluminizing temperature is reduced to 715 ~ 735 ℃, the mechanical properties of the raw materials can be maintained by air cooling. The wear resistance and weight loss tests show that the mass loss of aluminized steel is obviously lower than that of galvanized steel, When the loading force increased from 3 N to 19 N, the mass loss of aluminized steel increased from 0.87 mg to 2.15 mg. The maximum mass loss was only 19.8% of Q345 and 28.1% of galvanized steel. The phase analysis of the aluminized steel, galvanized steel and raw material after wear shows that the wear-resistant phase of the aluminized steel is Fe-Al-O compound and the wear-resistant phase of the galvanized steel is Fe-Zn alloy oxide; the wear mechanism analysis It shows that the wear of Q345 is mainly adhesive wear, while the aluminized steel is abrasive wear.