Comparison between laser cladding Fe-based and Ni-based alloy coatings on 35CrMo

SONG Xinhua; ZOU Yufeng; XING Jiakun; LI Weiyi

doi:10.7510/jgjs.issn.1001-3806.2015.01.008

In order to study the laser cladding Fe-based and Ni-based alloy coatings on 35CrMo motor spindle, 3540 Fe-based and Ni00 Ni-based modified coating alloy coatings were prepared on the surface of 35CrMo motor spindle with CO2 laser. After the initial satisfaction of engineering applications, hardness of the modified coating materials at a selected cross-section were tested in both the horizontal and vertical direction,while the metallographic properties were studied by applying etching liquids. The results show that near the junction of the cladding zone and the fusion zone, both hardness of the two cladding materials are about 640HV, which meet the engineering application. Both of the two kinds of the coating materials are better than the base material in terms of corrosion resistance. Microstructures are significant different from the laser clad zone to the fusion zone. The grains become smaller and smaller in size and the Ni-based materials is better than Fe-based materials in corrosion resistance. Comprehensive comparison shows that Ni00 cladding material is better than 3540 material in meeting engineering application.

Comparison between laser cladding Fe-based and Ni-based alloy coatings on 35CrMo

1. Department of Aerospace Engineering, Zhangjiajie Institute of Aeronautical Engineering, Zhangjiajie 427000, China;

2. The State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China;

3. BAIC Group Guangzhou Automotive Co.Ltd., Guangzhou 511300, China

Received Date: 2014-01-16

Accepted Date: 2014-03-14

Available Online: 2015-01-25

Abstract: In order to study the laser cladding Fe-based and Ni-based alloy coatings on 35CrMo motor spindle, 3540 Fe-based and Ni00 Ni-based modified coating alloy coatings were prepared on the surface of 35CrMo motor spindle with CO2 laser. After the initial satisfaction of engineering applications, hardness of the modified coating materials at a selected cross-section were tested in both the horizontal and vertical direction,while the metallographic properties were studied by applying etching liquids. The results show that near the junction of the cladding zone and the fusion zone, both hardness of the two cladding materials are about 640HV, which meet the engineering application. Both of the two kinds of the coating materials are better than the base material in terms of corrosion resistance. Microstructures are significant different from the laser clad zone to the fusion zone. The grains become smaller and smaller in size and the Ni-based materials is better than Fe-based materials in corrosion resistance. Comprehensive comparison shows that Ni00 cladding material is better than 3540 material in meeting engineering application.

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Reference (16)

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Comparison between laser cladding Fe-based and Ni-based alloy coatings on 35CrMo

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通讯作者: 陈斌, bchen63@163.com

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