Mechanical Properties of 18Ni-300 maraging steel manufactured by LPBF
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F19%3A10244320" target="_blank" >RIV/61989100:27360/19:10244320 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S2452321619303208?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2452321619303208?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.prostr.2019.08.112" target="_blank" >10.1016/j.prostr.2019.08.112</a>
Alternative languages
Result language
angličtina
Original language name
Mechanical Properties of 18Ni-300 maraging steel manufactured by LPBF
Original language description
The purpose of this document is to investigate the influence of heat treatment on the mechanical properties of parts from MAR 300 (EN 1.2709) produced by LPBF. In order to compare the influence of the heat treatment on the parts properties, some parts were in the state solution annealed and others age hardened tested. For the quality in the LPBF the feedstock powder as starting material is of great importance. Therefore, powder characterization has been performed in order to work out ageing effects after multiple use. As a major ageing effect an increasing oxygen content could be identified which might affect process and parts quality. For industrial acceptance, AM parts need to be produced to the best available tolerances and with well-understood mechanical properties. For this purpose, the mechanical properties of the LPBF samples have been analysed and are compared to those properties for conventional samples. In this investigation, the mechanical tests (hardness test, tensile test and notch impact resistance) have been performed in horizontal and vertical directions of manufacturing by LPBF. The hardness increased from 333341 HV10 to 640656 HV10 after heat treatment. Simultaneously, the ultimate tensile strength (Rm) increases from 10561096 MPa to 19642102 MPa, while the break elongation (stot) is reduced from 11.316.0% to 2.04.5%. Aged samples show a significant decrease in toughness in the Notch Impact Test. A specifically designed ball joint test setup has shown that the frame manufactured by LPBF provides comparable results as a conventionally manufactured frame and is robust and suitable for the prototype production and test of car headlamps. (C) 2019 The Authors. Published by Elsevier B.V.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
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Continuities
V - Vyzkumna aktivita podporovana z jinych verejnych zdroju
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
European Conference on Fracture (ECF21)
ISBN
978-1-72810-701-1
ISSN
2452-3216
e-ISSN
2452-3216
Number of pages
7
Pages from-to
843-849
Publisher name
Elsevier Science
Place of publication
New York
Event location
Funchal
Event date
Sep 2, 2019
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000505162900111