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- Title
RESIDUAL STRESS MEASUREMENTS AND STRUCTURAL INTEGRITY IMPLICATIONS FOR SELECTIVE LASER MELTED TI-6AL-4V.
- Authors
Knowles, C. R.; Becker, T. H.; Tait, R. B.
- Abstract
Selective laser melting (SLM) of Ti-6Al-4V has significant potential in the aerospace and biotechnology industries. SLM employs a focused laser beam to melt successive layers of metallic powder into complex components. This process can result in the generation of high thermally-induced residual stresses. These residual stresses, together with micro-flaws/ pores from the inherent fabrication process, may lead to premature fatigue crack initiation and propagation at relatively low cyclic stresses. The hole-drilling strain gauge method was used to evaluate residual stresses within SLM Ti-6Al-4V specimens, with the intention of understanding the associated mechanisms for the successful application of SLM Ti-6Al-4V in industry.
- Subjects
RESIDUAL stresses measurement; LASER fusion; LASER beams; MATERIAL fatigue; METAL powders
- Publication
South African Journal of Industrial Engineering, 2012, Vol 23, Issue 3, p119
- ISSN
1012-277X
- Publication type
Article
- DOI
10.7166/23-3-515