The influence of SLS parameters on pores formation in stainless steel material

Sukhov D.I., Mazalov P.B., Nerush S.V., Khodirev N.A.
UDC
669.14.018.8
DOI
10.18577/2307-6046-2017-0-8-4-4
Article PDF (Russian) (712.71 KB)
How to cite
Sukhov D.I., Mazalov P.B., Nerush S.V., Khodirev N.A. The influence of SLS parameters on pores formation in stainless steel material // Proceedings of VIAM. 2017. No. 8. DOI: 10.18577/2307-6046-2017-0-8-4-4. URL: https://test.viam.ru/en/journal/2017/8/4
Keywords
selective laser melting (SLS), SLS process parameters, structure, metal powder compositions, pores, HIP.
Abstract

The influence of SLS process parameters on material structure is considered in this article. As the results of this work the main connections between SLS parameters were determined. Some conclusions about SLS process were made. It is shown that there are a few ways of SLS process optimization and the determination of peak hatch spacing value is one of them. Another way includes the correlation between hatch spacing and scanning speed. The increase in scanning speed value should be performed with decrease in hatch spacing value and vice versa. The other ways of SLS process optimization were also considered in this paper. The volume energy density should be taken into consideration while SLS parameters optimization is carried out. It is also shown that an applying HIP to SLS material could eliminate pores with diameter less than 80 μm.

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