Chiang Mai Journal of Science

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The 316L stainless steel powder was admixed with elemental Ni and Cu powders. The amounts of Ni and Cu powders, with particle sizes of less than 32 µm, were varied from 0 to 10 wt.%. The admixed powders were compacted into tensile test bars with green density of 6.58 g/cm³ Sintering of the compacted test bars was carried out in pure hydrogen at 1300 °C . for 45 minutes. It was observed that increasing Ni content in the 316L+Ni alloys resulted in improved tensile properties. In contrast, addition of Cu to the 316L+Ni alloys yielded inferior mechanical properties, compared to the 316L+Ni alloys. The Cu powders tended to compensate shrinkage regardless the amounts of Ni powders used for admixing.

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