Compression behaviour of wire + arc additive manufactured structures
Research output: Journal contributions › Journal articles › Research › peer-review
Standard
In: Metals, Vol. 11, No. 6, 877, 01.06.2021.
Research output: Journal contributions › Journal articles › Research › peer-review
Harvard
APA
Vancouver
Bibtex
}
RIS
TY - JOUR
T1 - Compression behaviour of wire + arc additive manufactured structures
AU - Abbaszadeh, Masoud
AU - Ventzke, Volker
AU - Neto, Leonor
AU - Riekehr, Stefan
AU - Martina, Filomeno
AU - Kashaev, Nikolai
AU - Hönnige, Jan
AU - Williams, Stewart
AU - Klusemann, Benjamin
N1 - Funding: This project has received funding from the European Union’s Horizon 2020 research and innovation programme in the project LASIMM (Large Additive Subtractive Integrated Modular Machine) under grant agreement No 723600 which is gratefully acknowledged.
PY - 2021/6/1
Y1 - 2021/6/1
N2 - Increasing demand for producing large-scale metal components via additive manufacturing requires relatively high building rate processes, such as wire + arc additive manufacturing (WAAM). For the industrial implementation of this technology, a throughout understanding of material behaviour is needed. In the present work, structures of Ti-6Al-4V, AA2319 and S355JR steel fabricated by means of WAAM were investigated and compared with respect to their mechanical and microstructural properties, in particular under compression loading. The microstructure of WAAM specimens is assessed by scanning electron microscopy, electron back-scatter diffraction, and optical microscopy. In Ti-6Al-4V, the results show that the presence of the basal and prismatic crystal planes in normal direction lead to an anisotropic behaviour under compression. Although AA2319 shows initially an isotropic plastic behaviour, the directional porosity distribution leads to an anisotropic behaviour at final stages of the compression tests before failure. In S355JR steel, isotropic mechanical behaviour is observed due to the presence of a relatively homogeneous microstructure. Microhardness is related to grain morphology variations, where higher hardness near the inter-layer grain boundaries for Ti-6Al-4V and AA2319 as well as within the refined regions in S355JR steel is observed. In summary, this study analyzes and compares the behaviour of three different materials fabricated by WAAM under compression loading, an important loading condition in mechanical post-processing techniques of WAAM structures, such as rolling. In this regard, the data can also be utilized for future modelling activities in this direction.
AB - Increasing demand for producing large-scale metal components via additive manufacturing requires relatively high building rate processes, such as wire + arc additive manufacturing (WAAM). For the industrial implementation of this technology, a throughout understanding of material behaviour is needed. In the present work, structures of Ti-6Al-4V, AA2319 and S355JR steel fabricated by means of WAAM were investigated and compared with respect to their mechanical and microstructural properties, in particular under compression loading. The microstructure of WAAM specimens is assessed by scanning electron microscopy, electron back-scatter diffraction, and optical microscopy. In Ti-6Al-4V, the results show that the presence of the basal and prismatic crystal planes in normal direction lead to an anisotropic behaviour under compression. Although AA2319 shows initially an isotropic plastic behaviour, the directional porosity distribution leads to an anisotropic behaviour at final stages of the compression tests before failure. In S355JR steel, isotropic mechanical behaviour is observed due to the presence of a relatively homogeneous microstructure. Microhardness is related to grain morphology variations, where higher hardness near the inter-layer grain boundaries for Ti-6Al-4V and AA2319 as well as within the refined regions in S355JR steel is observed. In summary, this study analyzes and compares the behaviour of three different materials fabricated by WAAM under compression loading, an important loading condition in mechanical post-processing techniques of WAAM structures, such as rolling. In this regard, the data can also be utilized for future modelling activities in this direction.
KW - AA2319
KW - Compression test
KW - EBSD
KW - S355JR steel
KW - Ti-6Al-4V
KW - Engineering
UR - http://www.scopus.com/inward/record.url?scp=85106666317&partnerID=8YFLogxK
UR - https://www.mdpi.com/2075-4701/11
U2 - 10.3390/met11060877
DO - 10.3390/met11060877
M3 - Journal articles
AN - SCOPUS:85106666317
VL - 11
JO - Metals
JF - Metals
SN - 2075-4701
IS - 6
M1 - 877
ER -