35CrMo激光熔覆铁基合金与镍基合金涂层性能比较

发布时间：2018-01-17 21:01

本文关键词：35CrMo激光熔覆铁基合金与镍基合金涂层性能比较　出处：《激光技术》2015年01期 　论文类型：期刊论文

【摘要】：为了对35CrMo电机主轴激光熔覆铁基合金与镍基合金涂层进行对比研究,利用CO2激光在35CrMo电机主轴表面制备3540铁基和Ni00镍基合金改性涂层,在初步满足工程应用的前提下,对两种材料改性涂层横截面横向和纵向上的硬度进行测试,并通过配备腐蚀液对其进行了金相研究。结果表明,在熔覆区和熔合区交界处附近,两种熔覆材料的显微硬度差别不大,均为640HV左右,都能满足工程应用;两种涂层材料的耐腐蚀性均较基体材料强,激光熔覆区域、熔合区的显微组织差异明显,晶粒的尺寸逐渐变小,且镍基材料的耐腐蚀更强。综合比较而言,选择Ni00熔覆材料较3540材料更能满足工程应用。
[Abstract]:In order to study the laser cladding of iron base alloy and nickel base alloy coating on 35CrMo motor spindle. 3540 Fe-base and Ni00 Ni-base alloy modified coatings were prepared by CO2 laser on the surface of 35CrMo motor spindle. The transverse and longitudinal hardness of the two modified coatings was tested and metallographically studied with corrosion solution. The results show that the hardness is near the junction of the cladding zone and the fusion zone. The microhardness of the two cladding materials is about 640 HV, which can meet the engineering application. The corrosion resistance of the two coating materials is stronger than that of the substrate. The microstructure of the laser cladding zone and the fusion zone are obviously different, the grain size gradually becomes smaller, and the corrosion resistance of the nickel base material is stronger. The selection of Ni00 cladding material is more suitable for engineering application than 3540 material.
【作者单位】：张家界航空工业职业技术学院航空制造工程系;湖南大学汽车车身先进设计制造国家重点实验室;北汽(广州)汽车有限公司;
【分类号】：TG174.4
【正文快照】： Comparison between laser cladding Fe-based andNi-based alloy coatings on 35Cr Mo关模型模拟出了相关因素对激光熔覆表面形态影响以及熔池的流动方式。SEXTON[12]等人采用两种不同的镍基高温合金对受损的叶片进行修复,采用激光熔覆后的熔覆层与采用电弧焊得到的涂层比较

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