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Statistical analysis of porosity of 17-4PH alloy processed by selective laser melting

conference contribution
posted on 2017-01-01, 00:00 authored by P Ponnusamy, S H Masood, D Ruan, S Palanisamy, Omar Amhimmid
Selective Laser Melting (SLM) is a powder-bed type Additive Manufacturing (AM) process, where parts are built layer-by-layer by laser melting of powder layers of metal. There are several SLM process parameters that affect the accuracy and quality of the metal parts produced by SLM. Therefore, it is essential to understand the effect of these parameters on the quality and properties of the parts built by this process. In this paper, using Taguchi design of experiments, the effect of four SLM process parameters namely laser power, defocus distance, layer thickness and build orientation are considered on the porosity of 17-4PH stainless steel parts built on ProX200 SLM direct metal printer. The porositywas found to be optimum at a defocus distance of -4mm and a laser power of 240 W with a layer thickness of 30 μm and using vertical build orientation.

History

Event

Design, Materials, and Manufacturing. Conference (2nd : 2017 : Beijing, China)

Volume

220

Pagination

1 - 6

Publisher

IOP Publishing

Location

Beijing, China

Place of publication

Bristol, Eng.

Start date

2017-06-23

End date

2017-06-25

ISSN

1757-8981

eISSN

1757-899X

Language

eng

Publication classification

E1.1 Full written paper - refereed

Copyright notice

2017, the author(s)

Editor/Contributor(s)

[Unknown]

Title of proceedings

ICDMM 2017 : Proceedings of the 2017 2nd International Conference on Design, Materials and Manufacturing

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