Effect of Process Parameters on Residual Stress Distribution during Direct Laser Metal Deposition Shaping

Abstract:

In order to improve the quality of sample and decrease the stress during process, it is important to study the residual stress distribution during direct laser metal deposition (LMDS) process. In this paper, according to the “element life and death” technique of finite element method ,with APDL, we simulated the effects of Laser power, scanning velocity, substrate preheat temperature and powder addition speed in top layer of samples residual stress distribution during whole LMDS process are studied. The residual stress distribution under different process parameters is researched in detail. Using the same process parameters, the simulation results show good agreement with the features of sample which fabricated by LMDS.

• Periodical: Advanced Materials Research (Volumes 989-994)
• Pages: 49-54
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.989-994.49
• Online since: July 2014
• Authors: Hao Wang*
• Keywords: Laser Metal Deposition Shaping, Numerical Simulation, Process Parameter, Residual Stress

References

[1] Zuo TieChuan Chen Hong. Green Manufacture in 21Century —Laser Manufacturing Technology and Application. [J] Chinese Journal of Mechanical Engineering. 2009, 45(10): 106-110.

[2] Yao Shan， Zeng Feng et al. New Laser Rapid Prototyping Method and It's Applications Chinese Journal of Mechanical Engineering. 2007, 43(5): 230-234.

[3] LABUDOVIC M, HU D, KOVACEVIC R. A three dimensional model for direct laser metal powder deposition and rapid prototyping [J]Journal of materials science, 2003, 38(1): 35-49.

[4] MAZUMDER J. Overview of melt dynamics in laser processing [J]. Optical engineering, 1991, 30(1208).

[5] Jia Wen -Peng, Lin Xin, Chen Jing, et al. Numerical Simulation for Temperature/strees Field of TC4 Titanium Alloy Hollow Blade during Laser Rapid Forming Process[J]. CHINESE JOURNAL OF LASERS, 2007, 34(009): 1308-1312.

[6] Long Ri-Sheng Liu Wei-jun et al. effects of scanning methods on thermal stress during laser meter deposition shaping. Chinese Journal of Mechanical Engineering. 2007，43（11）：74-80.

DOI: 10.3901/jme.2007.11.074

[7] Xi Ming-Zhe，Yu Gang. Numerical Simulation for the Transient Temperature Field of 3D Moving Laser Molten Pool[J]. CHINESE JOURNAL OF LASERS, 2004, 31(012): 1527-1532.

[8] Xin Wang, Ping Xiao Characterisation of ceramic coatings sintering using residual stress measurements. Journal of the European Ceramic Society24 (2004) 283–288.

DOI: 10.1016/s0955-2219(03)00233-4

[9] Tabernero, I. (2011). Evaluation of the mechanical properties of Inconel 718 components built by laser cladding. International Journal of Machine Tools and Manufacture. International Journal of Machine Tools & Manufacture 51(2011) 465–470.

DOI: 10.1016/j.ijmachtools.2011.02.003

[10] LONG Risheng, LIU Weijun, XING Fei, et al. Effects of substrate preheating on thermal stress during laser metal deposition shaping[J]. Journal of Mechanical Engineering, 2009，45(10)：241-247.

DOI: 10.3901/jme.2009.10.241

[11] YANG Jian CHEN Jing et al. Experimental Study on Residual Stress Distribution of Laser Rapid Forming Process. [J]Rare Metal Materials and Engineering. 2004, 33(12): 1304-1307.