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Analysis of residual stress formation in additive manufacturing of Ti-6Al-4V
Publikationstyp
Conference Paper
Date Issued
2016
Sprache
English
Institut
TORE-URI
Volume
1
Start Page
43
End Page
50
Citation
Materials Science and Technology Conference and Exhibition 2016 (1): 43-50 (2016)
Contribution to Conference
ISBN of container
978-151083314-2
Laser Beam Melting (LBM) and Additive Metal Deposition (AMD) offer many advantages such as high freedom in design and short lead times. Although Ti-6Al-4V is one of the most widely used materials in powder bed-based LBM and the nozzle-fed powder-based AMD, the occurrence of residual stresses is still a common cause for failure of parts or even the entire build job. In this paper, the influence of different exposure patterns on the residual stresses is shown. A simulation-based approach is chosen to develop a strategy for further optimization of the exposure. For validation, X-ray diffraction and Crack Compliance Method have successfully been used in first experiments to determine the local distribution of residual stresses for both technologies. The results show a significant variation of the residual stresses.
Subjects
Additive metal deposition
Crack compliance method
Laser beam melting
Residual stresses
X-Ray diffraction