Effect of heat treatment on hardness and wear resistance of laser clad Co-based alloy coating

doi:10.13251/j.issn.0254-6051.2023.07.045

Abstract

Abstract: Co-based alloy coating was prepared on the surface of ductile iron by laser cladding technology. Microstructure of the specimens under different heat treatment processes was analyzed and the effects of different processes on the hardness and wear resistance of the cobalt-based alloy coating were discussed. Compared with untreated specimens, the hardness of heat-treated specimens is improved. The hardness changes of the specimens treated at 950 ℃ for 1 h and 2 h, respectively, are similar, which are 51.35 HRC and 51.15 HRC, and that subsequent aged at 825 ℃ are 52.50 HRC and 52.08 HRC. The wear amount of the untreated specimen is the highest and the wear resistance is the worst. The wear loss of the specimen treated by 950 ℃×1 h + 825 ℃×24 h reduces by 5.3%, and that of the treated by 950 ℃×3 h+825 ℃×24 h reduces by 12.8%, which shows better wear resistance.

Key words: laser cladding, Co-based alloy coating, heat treatment, hardness, wear resistance

CLC Number:

Yang Dongjie, Bai Qiaofeng, Ouyang Changyao, Wang Rui, Wei Runze. Effect of heat treatment on hardness and wear resistance of laser clad Co-based alloy coating[J]. Heat Treatment of Metals, 2023, 48(7): 271-276.

References

[1]Li B, Zhu H, Qiu C, et al. Laser cladding and in-situ nitriding of martensitic stainless steel coating with striking performance[J]. Materials Letters, 2020, 259: 126829.
[2]Lv H, Li X, Li Z, et al. Investigation on the columnar-to-equiaxed transition during laser cladding of IN718 alloy[J]. Journal of Manufacturing Processes, 2021, 67: 63-76.
[3]Lee C, Park H, Yoo J, et al. Residual stress and crack initiation in laser clad composite layer with Co-based alloy and WC + NiCr[J]. Applied Surface Science, 2015, 345: 286-294.
[4]Luo X, Li J, Li G J, et al. Effect of NiCrBSi content on microstructural evolution, cracking susceptibility and wear behaviors of laser cladding WC/Ni-NiCrBSi composite coatings[J]. Journal of Alloys and Compounds, 2015, 626 102-111.
[5]Ding L, Hu S S, Quan X M, et al. Microstructure evolution and tribological properties of Co-based-VN alloy-Ti composite coatings by aging treatment[J]. Surface and Coatings Technology, 2017, 330: 178-184.
[6]董会, 郭鹏飞, 徐龙, 等. 热处理温度对高速激光熔覆Ni/316L涂层组织及摩擦磨损性能的影响[J]. 表面技术, 2022, 51(5): 111-120.
Dong Hui, Guo Pengfei, Xu Long, et al. Effect of heat treatment temperature on microstructure and friction and wear properties of high-speed laser cladded Ni/316L coating[J]. Surface Technology, 2022, 51(5): 111-120.
[7]崔宸, 武美萍, 夏思海. 热处理对42CrMo钢表面激光熔覆钴基涂层性能的影响[J]. 中国激光, 2020, 47(6): 162-169.
Cui Chen, Wu Meiping, Xia Sihai. Effect of heat treatment on properties of 42CrMo steel surface laser cladding cobalt base coating[J]. Chinese Journal of Lasers, 2020, 47(6): 162-169.
[8]Ding L, Hu S, Quan X, et al. Effect of heat treatment on the microstructure and properties of VN alloy/Co-based composite coatings[J]. Surface and Coatings Technology, 2017, 313: 355-360.
[9]Guo W M, Jia Z Q, Liu G Q, et al. Effect of post-cladding heat treatment on microstructure and performance of a laser cladded 2Cr17Ni2 steel coating[J]. Journal of Materials Engineering and Performance, 2023, 32: 1778-1789.
[10]Chen Z, Li R, Gu J, et al. Laser cladding of Ni60+17-4PH composite for a cracking-free and corrosion resistive coating[J]. International Journal of Modern Physics B, 2020, 33: 2040042.
[11]兰东生, 闫献国, 陈峙, 等. 磁场深冷处理对YG11C硬质合金耐磨性的影响[J]. 金属热处理, 2021, 46(8): 184-188.
Lan Dongsheng, Yan Xianguo, Chen Zhi, et al. Effect of magnetic field cryogenic treatment on wear resistance of YG11C cemented carbide[J]. Heat Treatment of Metals, 2021, 46(8): 184-188.
[12]张连旺, 牛伟, 孙荣禄, 等. 热处理对激光熔覆CoCrFeNiSi_2.0高熵合金涂层组织与性能的影响[J]. 表面技术, 2022, 51(12): 340-349.
Zhang Lianwang, Niu Wei, Sun Ronglu, et al. Effect of heat treatment on microstructure and properties of laser cladding CoCrFeNiSi_2.0 high entropy alloy coating[J]. Surface Technology, 2022, 51(12): 340-349.
[13]蒋一江, 闫献国, 陈峙, 等. 磁场深冷处理对42CrMo钢耐磨性的影响[J]. 金属热处理, 2020, 45(1): 91-95.
Jiang Yijiang, Yan Xianguo, Chen Zhi, et al. Effect of magnetic field cryogenic Treatment on wear resistance of 42CrMo steel[J]. Heat Treatment of Metals, 2020, 45(1): 91-95.
[14]戴衍, 孙昊, 刘飞, 等. 含硬质相铁基耐磨堆焊合金的研究进展[J]. 企业技术开发, 2016, 35(8): 74-75, 89.
[15]杨柳, 谢奕心, 鞠玉琳, 等. 贝氏体等温淬火对 Dievar 热作模具钢高温摩擦磨损性能的影响[J]. 金属热处理, 2023, 48(2): 85-93.
Yang Liu, Xie Yixin, Ju Yulin, et al. Effect of austempering on high temperature frictional wear property of Dievar hot working die steel[J]. Heat Treatment of Metals, 2023, 48(2): 85-93.
[16]刘凌波, 杨贵荣, 宋文明, 等. Ni-WB₂复合熔覆层的微观组织及摩擦磨损性能[J]. 金属热处理, 2023, 48(1): 207-216.
Liu Lingbo, Yang Guirong, Song Wenming, et al. Microstructure and wear performance of Ni-WB₂ composite clad layer[J]. Heat Treatment of Metals, 2023, 48(1): 207-216.