Publication detail

Analysis of fatigue processes of SLM materials by acoustic emission

KRATOCHVÍLOVÁ, V. VLAŠIC, F. MAZAL, P. PALOUŠEK, D. PANTĚLEJEV, L.

English title

Analysis of fatigue processes of SLM materials by acoustic emission

Type

journal article in Scopus

Language

en

Original abstract

The paper gives an overview of selective laser melting (SLM) materials properties focusing on fatigue processes and their acoustic emission. The SLM technology belongs to rapid prototyping technologies and allows to quickly produce metal parts with complicated shapes. However, the mechanical properties of these materials are currently worse than those of conventionally produced materials. Acoustic emission method was used to compare fatigue behaviour of SLM and conventionally produced materials. Tested materials were aluminium alloy AW-2618A (AlCu2Mg1,5Ni), copper alloy AMPCOLOY® 944 (Cu7Ni2Si1Cr) and SLM materials with similar chemical composition. The results from all materials were compared. The fractographic and metallographic analysis were also conducted as a complement. In general, the fatigue life of SLM materials is worse than those of conventionally produced. The difference is much more significant in aluminium alloys than in copper alloys. It is caused by the big amount of internal defects and inhomogeneities in SLM materials.

English abstract

The paper gives an overview of selective laser melting (SLM) materials properties focusing on fatigue processes and their acoustic emission. The SLM technology belongs to rapid prototyping technologies and allows to quickly produce metal parts with complicated shapes. However, the mechanical properties of these materials are currently worse than those of conventionally produced materials. Acoustic emission method was used to compare fatigue behaviour of SLM and conventionally produced materials. Tested materials were aluminium alloy AW-2618A (AlCu2Mg1,5Ni), copper alloy AMPCOLOY® 944 (Cu7Ni2Si1Cr) and SLM materials with similar chemical composition. The results from all materials were compared. The fractographic and metallographic analysis were also conducted as a complement. In general, the fatigue life of SLM materials is worse than those of conventionally produced. The difference is much more significant in aluminium alloys than in copper alloys. It is caused by the big amount of internal defects and inhomogeneities in SLM materials.

Keywords in English

selective laser melting, fatigue, acoustic emission, additive technology

Released

28.03.2018

Publisher

Indescience Enterprises Ltd.

Location

United Kingdom

ISSN

1741-8410

Volume

17

Number

3

Pages from–to

193–205

Pages count

13

BIBTEX


@article{BUT140564,
  author="Vendula {Skřivánková} and František {Vlašic} and Pavel {Mazal} and David {Paloušek} and Libor {Pantělejev},
  title="Analysis of fatigue processes of SLM materials by acoustic emission",
  year="2018",
  volume="17",
  number="3",
  month="March",
  pages="193--205",
  publisher="Indescience Enterprises Ltd.",
  address="United Kingdom",
  issn="1741-8410"
}