Microstructure and Friction and Wear Properties of Laser Clad Co-Based Alloy Coating on Surface of NAK80 Mold Steel

CHENG Hu; DAI Sheng; FANG Zhi-gang; ZHAO Xian-rui; GAO Yu-xin

Materials and Mechanical Engineering > 2012 > 36(8): 37-41.

CHENG Hu, DAI Sheng, FANG Zhi-gang, ZHAO Xian-rui, GAO Yu-xin. Microstructure and Friction and Wear Properties of Laser Clad Co-Based Alloy Coating on Surface of NAK80 Mold Steel[J]. Materials and Mechanical Engineering, 2012, 36(8): 37-41.

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Microstructure and Friction and Wear Properties of Laser Clad Co-Based Alloy Coating on Surface of NAK80 Mold Steel

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Received Date: April 20, 2012

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The Co-based alloy cladding coating was successfully fabricated on the surface of NAK80 mold steel by laser cladding technology. The microstructure of the coating was analyzed by scanning electron microscopy (SEM), X-ray diffraction (XRD). The property of friction and wear, and the wear mechanism were studied by the dry sliding friction test. The morphology of wear samples were measured by 3D surface profilometer. The results show that the cladding coating was mainly composed of Cr23C6, Co3Mo2Si, MoC, FeCr and γ-Co. The plane crystal in the interface of the coating and the substrate, cellular dendrite at the central zone and reticular equiaxed crystal near top surface were observed in the cladding coating. The microhardness and wear resistance of NAK80 mold steel surface were improved noticeably by laser cladding technology. Compared with NAK80 mold steel, the average friction coefficient of the cladding coating decreased by about 34%, and the wear rate reduced by about 91.3%. The wear mechanism for the laser cladding coating was adhesive wear and slight micro-cutting.
- laser cladding,
- Co-based alloy,
- NAK80 mold steel,
- microstructure,
- friction and wear property

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[1]	曲庆文, 党军建, 郭秀萍. 模具寿命与摩擦学设计[J].山东理工大学学报:自然科学版, 2004, 18(1):34-37.
[2]	WANG H Y, ZUO D W, YAN J, et al. Effects of nanometer Al2O3 particles on oxidation behaviors of laser cladding low Al NiCoCrAlY coatings[J].Oxidation of Metals, 2010, 74(1/2):49-60.
[3]	WANG H, ZUO D, LI X, et al. Effects of CeO2 nanoparticles on microstructure and properties of laser cladded NiCoCrAlY coatings[J].Journal of Rare Earths, 2010, 28(2):246-250.
[4]	NAVAS C, CONDE A, FERNNDEZ B J, et al. Laser coatings to improve wear resistance of mould steel[J].Surface and Coatings Technology, 2005, 194(1):136-142.
[5]	骆芳, 陈智君, 楼程华, 等.塑料模具钢表面激光熔覆陶瓷复合涂层的性能研究[J].兵工学报, 2010, 31(7):933-938.
[6]	CHEN J Y, CONLON K, XUE L, et al. Experimental study of residual stresses in laser clad AISI P20 tool steel on pre-hardened wrought P20 substrate[J].Materials Science and Engineering A, 2010, 527(27/28):7265-7273.
[7]	赵洪运, 刘喜明, 连建设, 等.辊锻模具表面送粉激光熔覆WC陶瓷层的高温组织与性能[J].焊接学报, 2002, 23(5):12-14.
[8]	温良英, 陈洪, 白晨光, 等.10Ni3MnCuAl模具钢中厚板生产工艺优化[C] // 2006年全国冶金物理化学学术会议论文集.济南: 中国金属学会, 2006.
[9]	唐庆江, 莫敦.10Ni3MnCuAl的脱氧工艺研究[J].特钢技术, 2002, 10(3):11-13.
[10]	MIAO H, ZUO D W, WANG H J. Surface characteristics of 10Ni3MnCuAl steel by shot peening[J].Transactions of Nanjing University of Aeronautics & Astronautics, 2009, 26(3):178-183.
[11]	汪洪峰, 左敦稳, 邵定林, 等.退火温度对7022铝合金干摩擦性能的影响[J].深圳大学学报:理工版, 2010, 27(2):131-136.
[12]	李志远, 赵伟毅, 聂登攀, 等.TiN对Co基合金激光熔覆层组织与性能的影响[J].强激光与粒子束, 2010, 22(7):1657-1660.
[13]	王红颖, 崔承云, 周杰. 工具钢表面激光熔覆Co基合金涂层的组织及性能[J].吉林大学学报:工学版, 2010, 40(4):1000-1004.

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