INVESTIGATION OF THE EFFECT OF SCAN VECTOR LENGTH ON RESIDUAL STRESSES IN SELECTIVE LASER MELTING OF MARAGING STEEL 300
DOI:
https://doi.org/10.7166/30-4-2096Keywords:
Selective laser melting, residual stresses, porosity, neutron diffractionAbstract
Selective laser melting scanning strategies influence the quality characteristics of parts, such as form accuracy and residual stresses. Previous research on the effect of laser scanning strategy parameters (such as scan vector length) demonstrates that residual stresses decrease with scan vector length reduction. However, most of these studies overlook the associated porosity and how this can contribute to stress relief. In this work, three scan vector lengths were compared to evaluate their impact on residual stresses, achievable part density, and scanning time. Reducing the scan vector length generally lowers residual stresses magnitudes, but introduces porosity as a result of localised overheating.
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Published
2019-12-12
How to Cite
Mugwagwa, L., Dimitrov, D., Matope, S., & Yadroitsev, I. (2019). INVESTIGATION OF THE EFFECT OF SCAN VECTOR LENGTH ON RESIDUAL STRESSES IN SELECTIVE LASER MELTING OF MARAGING STEEL 300. The South African Journal of Industrial Engineering, 30(4), 60–70. https://doi.org/10.7166/30-4-2096
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