螺杆钢表面不同激光熔覆层的耐磨与耐腐蚀性能
Wear Resistance and Corrosion Resistance of Different Laser Cladding Layers on Surface of Screw Steel
摘 要
利用CO2激光器在38CrMoAl钢表面激光熔覆了Ni35、铁基、钴基和Ni60A合金熔覆层，对比研究了不同熔覆层的组织、耐磨性能和耐腐蚀性能。结果表明：4种熔覆层的显微组织均为细小的枝晶；Ni60A、铁基、钴基、Ni35合金熔覆层的表层硬度分别为771，614，380，290 HV0.1；Ni60A合金熔覆层的耐磨性能最好，磨损率为4.124×10-14 m3·N-1·m-1，铁基合金熔覆层、钴基合金熔覆层、Ni35合金熔覆层的耐磨性能依次降低；Ni60A合金熔覆层与钴基合金熔覆层的耐腐蚀性能最好，耐腐蚀性保护评级均为8，Ni35合金熔覆层的次之，铁基合金熔覆层的最差。
耐磨性能
耐蚀性能
laser cladding
wear resistance
corrosion resistance
Abstract
Ni35, Fe-based, Co-based and Ni60A alloy layers were laser cladded on 38CrMoAl steel by a CO2 laser machine. The microstructures, wear resistance and corrosion resistance of the different cladding layers were studied and compared. The results show that the microstructures of the four cladding layers consisted of fine dendrites. The surface microhardness of Ni60A alloy, Fe-based alloy, Co-based alloy and Ni35 alloy cladding layers was 771,614,380,290 HV0.1, respectively. The wear resistance of the Ni60A alloy cladding layer was the best with the wear rate of 4.124×10-14 m3·N-1·m-1, and that of Fe-based alloy cladding layer, Co-based alloy cladding layer and Ni35 alloy cladding layer decreased in turn. The corrosion resistance of the Ni60A alloy and Co-based alloy cladding layers was the best and both had a corrosion protection rating of 8. The corrosion resistance of Ni35 alloy cladding layer took the second place while that of the Fe-based alloy cladding layer was the worst.
中图分类号 TG174.44 DOI 10.11973/jxgccl201710003
所属栏目 试验研究
基金项目 宁波市工业攻关重大项目（2015B11023，2015B11056）
收稿日期 2016/10/8
修改稿日期 2017/8/24
网络出版日期
作者单位点击查看
备注何骅波(1993-),男,浙江东阳人,硕士研究生
引用该论文: HE Huabo,YANG Mengmeng,HUANG Xiaobo,DAI Jiaoyan,XU Jinfu. Wear Resistance and Corrosion Resistance of Different Laser Cladding Layers on Surface of Screw Steel[J]. Materials for mechancial engineering, 2017, 41(10): 11～14
何骅波,杨梦梦,黄晓波,戴姣燕,徐金富. 螺杆钢表面不同激光熔覆层的耐磨与耐腐蚀性能[J]. 机械工程材料, 2017, 41(10): 11～14
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【16】YUAN S P, LIU G, WANG R H, et al. Coupling effect of multiple precipitates on the ductile fracture of aged Al-Mg-Si alloys[J]. Scripta Materialia, 2007, 57(9):865-868.
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