| Issue |
MATEC Web Conf.
Volume 370, 2022
2022 RAPDASA-RobMech-PRASA-CoSAAMI Conference - Digital Technology in Product Development - The 23rd Annual International RAPDASA Conference joined by RobMech, PRASA and CoSAAMI
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|---|---|---|
| Article Number | 01001 | |
| Number of page(s) | 7 | |
| Section | Design and Additive Manufacturing of Titanium Parts Seminar | |
| DOI | https://doi.org/10.1051/matecconf/202237001001 | |
| Published online | 01 December 2022 | |
As-built fracture toughness of Ti6Al4V produced by laser powder bed fusion
1 National Laser Center, Council for Scientific and Industrial Research, South Africa, dlouw@csir.co.za
2 Materials Engineering Research Group, Stellenbosch University, South Africa, melzvanrooyen@sun.ac.za
3 Centre for Materials Engineering, University of Cape Town, South Africa, thorsten.becker@uct.ac.za
Predicting and preventing stress induced support failure during laser powder bed fusion (LPBF) processing requires knowledge of the fracture toughness of the material in its as-built condition. When performing laboratory measurement of fracture toughness, large residual stresses that are present in the part due to the LPBF process can significantly affect the measurement and must be taken into consideration. In this article, fracture toughness in the as-built condition was measured to be 26 MPa.m1/2 and the residual stress distribution in the crack plane was determined with simulation. Finally, the effective fracture toughness of the material was calculated, using the principle of superposition, to be ~ 47 MPa.m1/2.
© The Authors, published by EDP Sciences, 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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