Microstructural comparison and mechanical properties of stainless steel 316L fabricated by selective laser melting and metal injection moulding processes

Selective laser melting (SLM) process is one of an additive manufacturing technology that has the capabilities of fabricating complex geometries with an excellent accuracy and resolution. Compared to conventional powder metallurgy techniques metal injection moulding (MIM), SLM has several advantages...

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Main Authors: Mohd Faizul Farhan, Ahmad Hamidi, W. S., Wan Harun, Nur Zalikha, Khalil, Samykano, Mahendran
Format: Article
Language:English
Published: Interscience 2019
Subjects:
Online Access:http://umpir.ump.edu.my/id/eprint/27183/
http://umpir.ump.edu.my/id/eprint/27183/1/Microstructural%20comparison%20and%20mechanical%20properties1.pdf
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author Mohd Faizul Farhan, Ahmad Hamidi
W. S., Wan Harun
Nur Zalikha, Khalil
Samykano, Mahendran
author_facet Mohd Faizul Farhan, Ahmad Hamidi
W. S., Wan Harun
Nur Zalikha, Khalil
Samykano, Mahendran
author_sort Mohd Faizul Farhan, Ahmad Hamidi
building UMP Institutional Repository
collection Online Access
description Selective laser melting (SLM) process is one of an additive manufacturing technology that has the capabilities of fabricating complex geometries with an excellent accuracy and resolution. Compared to conventional powder metallurgy techniques metal injection moulding (MIM), SLM has several advantages such as low production cost for small batch fabrication, high degrees of geometrical freedom and customisation, and short cycle time. The present work analyses and compares the tensile properties and metallography differences of the stainless steel 316L compacts fabricated by two powder-based manufacturing processes; SLM and MIM, respectively. The SLM compact was built at 0-degree building orientation by SLM 125 HL machine with default optimum processing parameters for stainless steel 316L powder. On the other hand, MIM process produced similar dimension of tensile-shaped compacts differently that by sintered at three different sintering conditions in highly pure argon flow atmosphere. The tensile testing revealed that SLM tensile compact was higher in tensile strength (29% more) and elongation (62% more) at fracture as compared to MIM compact. From microstructure observation, the MIM compact showed the presence of significant amount of porosity which led to moderate mechanical properties compared to SLM compact performances.
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publisher Interscience
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spelling ump-271832020-01-17T03:45:57Z http://umpir.ump.edu.my/id/eprint/27183/ Microstructural comparison and mechanical properties of stainless steel 316L fabricated by selective laser melting and metal injection moulding processes Mohd Faizul Farhan, Ahmad Hamidi W. S., Wan Harun Nur Zalikha, Khalil Samykano, Mahendran TJ Mechanical engineering and machinery Selective laser melting (SLM) process is one of an additive manufacturing technology that has the capabilities of fabricating complex geometries with an excellent accuracy and resolution. Compared to conventional powder metallurgy techniques metal injection moulding (MIM), SLM has several advantages such as low production cost for small batch fabrication, high degrees of geometrical freedom and customisation, and short cycle time. The present work analyses and compares the tensile properties and metallography differences of the stainless steel 316L compacts fabricated by two powder-based manufacturing processes; SLM and MIM, respectively. The SLM compact was built at 0-degree building orientation by SLM 125 HL machine with default optimum processing parameters for stainless steel 316L powder. On the other hand, MIM process produced similar dimension of tensile-shaped compacts differently that by sintered at three different sintering conditions in highly pure argon flow atmosphere. The tensile testing revealed that SLM tensile compact was higher in tensile strength (29% more) and elongation (62% more) at fracture as compared to MIM compact. From microstructure observation, the MIM compact showed the presence of significant amount of porosity which led to moderate mechanical properties compared to SLM compact performances. Interscience 2019 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/27183/1/Microstructural%20comparison%20and%20mechanical%20properties1.pdf Mohd Faizul Farhan, Ahmad Hamidi and W. S., Wan Harun and Nur Zalikha, Khalil and Samykano, Mahendran (2019) Microstructural comparison and mechanical properties of stainless steel 316L fabricated by selective laser melting and metal injection moulding processes. International Journal of Manufacturing Technology and Management, 33 (1/2). pp. 76-87. ISSN 1368-2148. (Published) https://doi.org/10.1504/IJMTM.2019.100160 https://doi.org/10.1504/IJMTM.2019.100160
spellingShingle TJ Mechanical engineering and machinery
Mohd Faizul Farhan, Ahmad Hamidi
W. S., Wan Harun
Nur Zalikha, Khalil
Samykano, Mahendran
Microstructural comparison and mechanical properties of stainless steel 316L fabricated by selective laser melting and metal injection moulding processes
title Microstructural comparison and mechanical properties of stainless steel 316L fabricated by selective laser melting and metal injection moulding processes
title_full Microstructural comparison and mechanical properties of stainless steel 316L fabricated by selective laser melting and metal injection moulding processes
title_fullStr Microstructural comparison and mechanical properties of stainless steel 316L fabricated by selective laser melting and metal injection moulding processes
title_full_unstemmed Microstructural comparison and mechanical properties of stainless steel 316L fabricated by selective laser melting and metal injection moulding processes
title_short Microstructural comparison and mechanical properties of stainless steel 316L fabricated by selective laser melting and metal injection moulding processes
title_sort microstructural comparison and mechanical properties of stainless steel 316l fabricated by selective laser melting and metal injection moulding processes
topic TJ Mechanical engineering and machinery
url http://umpir.ump.edu.my/id/eprint/27183/
http://umpir.ump.edu.my/id/eprint/27183/
http://umpir.ump.edu.my/id/eprint/27183/
http://umpir.ump.edu.my/id/eprint/27183/1/Microstructural%20comparison%20and%20mechanical%20properties1.pdf