Effect of Laser Process Parameters on Microstructures and Properties of NiCoCrAlYSi Laser Cladding Coating

被引：0

作者：

Shen H. ^{[1
]}

Cai J. ^{[2
]}

Lü P. ^{[1
]}

Zhang C. ^{[3
]}

Li Y. ^{[4
]}

Guan Q. ^{[1
]}

机构：

[1] School of Materials Science and Engineering, Jiangsu University, Zhenjiang

[2] Engineering Institute of Advanced Manufacturing and Modern Equipment Technology, Jiangsu University, Zhenjiang

[3] School of Materials Science and Engineering, Yancheng Insititute of Technology, Yancheng

[4] School of Materials Science and Engineering, North University of China, Taiyuan

来源：

Binggong Xuebao/Acta Armamentarii | 2021年 / 42卷 / 07期

关键词：

Friction and wear property; Laser cladding; Laser power; Microhardness; Microstructure; Ni625; superalloy; Scanning speed;

D O I：

10.3969/j.issn.1000-1093.2021.07.020

中图分类号：

学科分类号：

摘要：

NiCoCrAlYSi coating was fabricated on Ni625 superalloy by laser cladding technique, and the influences of laser power and scanning speed on the metallurgical quality and microstructure of NiCoCrAlYSi cladding coating were researched. The relationship among the laser cladding process parameters, and the microstructures and properties of cladding coating was analyzed by testing its micro-hardness, and friction and wear properties. The results show that, with the increase in laser input energy from 36 J/mm2 to 73.3 J/mm2, the thickness of cladding layer increases from 534 μm to 1 535 μm, the surface porosity increases from 0.07% to 0.65%, and the pore size increases from 0.23 μm to 1.33 μm. In addition, the grain size of cladding layer increases. The microhardness and wear resistance of the cladding layer decrease gradually with the increase in porosity and grain size. When the laser input energy ratio is 36 J/mm2, a cladding coating with high compactness, supper refined grains and high density of dislocations is obtained, which has optimal microhardness and wear resistance. © 2021, Editorial Board of Acta Armamentarii. All right reserved.

引用

页码：1524 / 1534

页数：10

共 31 条

[1]

GUO H B, GONG S K, XU H B., Research progress on new high/ultra-high temperature thermal barrier coatings and progressing technologies, Acta Aeronautica et Astronautica Sinica, 35, 10, pp. 2722-2732, (2014)

[2]

LIU Y, LIU S Y, WANG Y, Et al., Nano thermal spraying coating facing key components in high-side equipment, Materials Review, 30, S1, pp. 67-72, (2016)

[3]

CUI Y X, WANG C, HE L, Et al., The development of advanced TBC for heavy duty gas turbines, Aerospace Power, 2, pp. 66-69, (2019)

[4]

PADTURE N P, GELL M, JORDAN E H., Thermal barrier coatings for gas-turbine engine applications, Science, 296, 5566, pp. 280-284, (2002)

[5]

YU C T, YANG Y F, BAO Z B, Et al., Research progress in preparation and development of excellent bond coats for advanced thermal barrier coatings, Journal of Chinese Society for Corrosion and Protection, 39, 5, pp. 395-403, (2019)

[6]

POMEROY M J., Coatings for gas turbine materials and long term stability issues, Materials & Design, 26, 3, pp. 223-231, (2005)

[7]

LIANG J J, WEI H, HOU G C, Et al., Progress in mechanical and physical properties of high-temperature coating materials, Rare Metal Materials and Engineering, 37, 7, pp. 1134-1138, (2008)

[8]

WANG D S, TIAN Z J, SHEN L D, Et al., Research status of MCrAIY coatings prepared by laser cladding, Materials for Mechanical Engineering, 37, 12, pp. 1-5, (2013)

[9]

TOBAR M J, AMADO J M, YAEZ A, Et al., Laser cladding of MCrAlY coatings on stainless steel, Physics Procedia, 56, 8, pp. 276-283, (2014)

[10]

SEO J W, KIM J, KWON S J, Et al., Effects of laser cladding for repairing and improving wear of rails, International Journal of Precision Engineering and Manufacturing, 20, 7, pp. 1207-1217, (2019)

← 1 2 3 4 →