Paper Title:
A Study of Microstructure and Surface Hardness of Parts Fabricated by Laser Direct Metal Deposition Process
  Abstract

This paper presents an investigation on the microstructure and surface hardness of the parts fabricated by laser assisted Direct Metal Deposition (DMD) technology. A series of engineering metallic alloy powders were used in the DMD process to produce simple 3D geometric structures. The alloy powders investigated include: 316L stainless steel, 420 Stainless Steel, Stellite(R) 6, tool steel (H13), Cholmoloy (Ni Based alloy), and Aluminium Bronze. These were chosen due to their frequent application in engineering parts and components. The microstructure and hardness values have been compared to those of the wrought products (as annealed) as reported in the SAE standards, Heat treater’s guide to metals ASM international, and material data sheets supplied by the materials manufacturers. A significant difference is reported in both hardness and microstructure of the laser deposited samples compared to those of the wrought form.

  Info
Periodical
Advanced Materials Research (Volumes 129-131)
Edited by
Xie Yi and Li Mi
Pages
648-651
DOI
10.4028/www.scientific.net/AMR.129-131.648
Citation
M. Soodi, M. Brandt, S. H. Masood, "A Study of Microstructure and Surface Hardness of Parts Fabricated by Laser Direct Metal Deposition Process", Advanced Materials Research, Vols. 129-131, pp. 648-651, 2010
Online since
August 2010
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Price
$32.00
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