Residual stress of as-deposited and rolled wire+arc additive manufacturing Ti-6Al-4V components
Wire + arc additive manufacturing components contain significant residual stresses, which manifest in distortion. High-pressure rolling was applied to each layer of a linear Ti-6Al-4V wire + arc additive manufacturing component in between deposition passes. In rolled specimens, out-of-plane distorti...
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| Veröffentlicht in: | Materials science and technology 2016-09, Vol.32 (14), p.1439-1448 |
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| creator | Martina, F. Roy, M. J. Szost, B. A. Terzi, S. Colegrove, P. A. Williams, S. W. Withers, P. J. Meyer, J. Hofmann, M. |
| description | Wire + arc additive manufacturing components contain significant residual stresses, which manifest in distortion. High-pressure rolling was applied to each layer of a linear Ti-6Al-4V wire + arc additive manufacturing component in between deposition passes. In rolled specimens, out-of-plane distortion was more than halved; a change in the deposits' geometry due to plastic deformation was observed and process repeatability was increased. The Contour method of residual stresses measurements showed that although the specimens still exhibited tensile stresses (up to 500 MPa), their magnitude was reduced by 60%, particularly at the interface between deposit and substrate. The results were validated with neutron diffraction measurements, which were in good agreement away from the baseplate.
This paper is part of a Themed Issue on Measurement, modelling and mitigation of residual stress. |
| doi_str_mv | 10.1080/02670836.2016.1142704 |
| format | Article |
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| source | SAGE Complete A-Z List |
| subjects | 3D printing Additive manufacturing Titanium |
| title | Residual stress of as-deposited and rolled wire+arc additive manufacturing Ti-6Al-4V components |
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