Publication detail
Mechanical and microstructural properties of 2618 Al-alloy processed by SLM remelting strategy
PANTĚLEJEV, L. KOUTNÝ, D. PALOUŠEK, D. KAISER, J.
Czech title
Mechanické a mikrostrukturní charakteristiky Al slitiny 2618 zpracované SLM strategií s přetavováním
English title
Mechanical and microstructural properties of 2618 Al-alloy processed by SLM remelting strategy
Type
conference paper
Language
en
Original abstract
Paper deals with the comparison of mechanical properties and microstructure of aluminium alloy 2618 fabricated by Selective Laser Melting (SLM) and material of the same grade manufactured by standard extrusion process. The SLM specimens were fabricated with different processing strategies (meander and remelting). Presence of cracks was found in both cases of used strategies, but in case of meander strategy, crack are of shorter character and distributed rather within individual welds. In case of remelting strategy, cracks are oriented mostly parallel to building direction and transcend fusion boundaries (FB) across several layers. It was found that defects present in microstructure of SLM material significantly affect its mechanical properties. Ultimate tensile strength (UTS) for extruded material reached 392 MPa, while for SLM material produced with meander strategy UTS was 273 MPa and for remelting strategy it was 24 MPa only.
Czech abstract
Článek se zabývá mechanickými a mikrostrukturními charakteristikami Al-Cu hliníkové slitiny zpracovávané pomocí metody SLM a to jak s využitím strategie meander tak strategie se zařazeným přetavováním.
English abstract
Paper deals with the comparison of mechanical properties and microstructure of aluminium alloy 2618 fabricated by Selective Laser Melting (SLM) and material of the same grade manufactured by standard extrusion process. The SLM specimens were fabricated with different processing strategies (meander and remelting). Presence of cracks was found in both cases of used strategies, but in case of meander strategy, crack are of shorter character and distributed rather within individual welds. In case of remelting strategy, cracks are oriented mostly parallel to building direction and transcend fusion boundaries (FB) across several layers. It was found that defects present in microstructure of SLM material significantly affect its mechanical properties. Ultimate tensile strength (UTS) for extruded material reached 392 MPa, while for SLM material produced with meander strategy UTS was 273 MPa and for remelting strategy it was 24 MPa only.
Keywords in English
2618A Al-alloy, selective laser melting, microstructure, tensile properties, defects
Released
03.04.2017
Publisher
Trans Tech Publications
Location
Switzerland
ISBN
978-3-0357-1018-2
ISSN
0255-5476
Book
Metallography XVI
Volume
891
Pages from–to
343–349
Pages count
6
BIBTEX
@inproceedings{BUT131733,
author="Libor {Pantělejev} and Daniel {Koutný} and David {Paloušek} and Jozef {Kaiser},
title="Mechanical and microstructural properties of 2618 Al-alloy processed by SLM remelting strategy",
booktitle="Metallography XVI",
year="2017",
volume="891",
month="April",
pages="343--349",
publisher="Trans Tech Publications",
address="Switzerland",
isbn="978-3-0357-1018-2",
issn="0255-5476"
}