Effect of Scanning Direction on Microstructure and Mechanical Properties of Part Formed via Variable Thickness Layer Cladding Deposition

被引：0

作者：

Zhou X. ^{[1
]}

Xin B. ^{[1
]}

Gong Y. ^{[1
]}

Zhang W. ^{[1
]}

Zhang H. ^{[1
]}

机构：

[1] School of Mechanical Engineering and Automation, Northeastern University, Shenyang, 110819, Liaoning

来源：

Zhongguo Jiguang/Chinese Journal of Lasers | 2019年 / 46卷 / 08期

关键词：

Anisotropy; Laser technique; Mechanical property; Scanning direction; Variable thickness cladding layer forming;

D O I：

10.3788/CJL201946.0802003

中图分类号：

学科分类号：

摘要：

To investigate the anisotropy of the tensile strength caused by laser cladding deposition, the influence of the scanning direction (from high to low and from low to high) on the microstructure and mechanical properties of the ramp's thin-walled part is explored based on the variable thickness cladding layer deposition. Tensile strength and hardness at different positions on the ramp's thin-walled part are tested, and its microstructure is analyzed by comparing it with that formed via uniform thickness cladding layer deposition. Results show that the grain growth direction in the longitudinal section is affected by the scanning direction when variable thickness cladding layer deposition is used. Furthermore, the grain growth direction and scanning track influence the tensile strength at different positions of the thin-walled part. Tensile strength anisotropy can be obviously reduced by depositing the variable thickness cladding layer in the scanning direction from low to high. In the horizontal direction, the change in hardness is consistent under different scanning directions. Additionally, variable thickness cladding layer deposition changes the maximum hardness distribution of the thin-walled part. © 2019, Chinese Lasers Press. All right reserved.

引用

共 21 条

[1] Deng Z.Q., Shi S.H., Zhou B., Et al., Laser cladding forming of unequal-height curved arc-shaped thin-wall structures, Chinese Journal of Lasers, 44, 9, (2017)
[2] Wang X.Y., Wang Y.F., Jiang H., Et al., Laser cladding forming of round thin-walled parts with slope angle, Chinese Journal of Lasers, 41, 1, (2014)
[3] Shamsaei N., Yadollahi A., Bian L.K., Et al., An overview of direct laser deposition for additive manufacturing
[4] part II: mechanical behavior, process parameter optimization and control, Additive Manufacturing, 8, pp. 12-35, (2015)
[5] Xiao Y., Lu Y.Y., Guo X.X., Et al., Study on process and properties of thin-walled structure part by laser additive manufacturing, Laser & Optoelectronics Progress, 55, 8, (2018)
[6] Guan K., Wang Z.M., Gao M., Et al., Effects of processing parameters on tensile properties of selective laser melted 304 stainless steel, Materials & Design, 50, pp. 581-586, (2013)
[7] Guo P., Zou B., Huang C.Z., Et al., Study on microstructure, mechanical properties and machinability of efficiently additive manufactured AISI 316L stainless steel by high-power direct laser deposition, Journal of Materials Processing Technology, 240, pp. 12-22, (2017)
[8] Dinda G.P., Dasgupta A.K., Mazumder J., Laser aided direct metal deposition of Inconel 625 superalloy: microstructural evolution and thermal stability, Materials Science and Engineering: A, 509, 1-2, pp. 98-104, (2009)
[9] Mertens A., Reginster S., Contrepois Q., Et al., Microstructures and mechanical properties of stainless steel AISI 316L processed by selective laser melting, Materials Science Forum, 783-786, pp. 898-903, (2014)
[10] Chen D.N., Liu T.T., Liao W.H., Et al., Temperature field during selective laser melting of metal powder under different scanning strategies, Chinese Journal of Lasers, 43, 4, (2016)

← 1 2 3 →