In-situ interstitial alloying during laser powder bed fusion of AISI 316 for superior corrosion resistance
نویسندگان
چکیده
The present work explores for the first time additive manufacturing of powder mixtures consisting Chromium Nitride (Cr2N) and AISI 316L with laser bed fusion (L-PBF). addition 2.5 wt% Cr2N to an resulted in successful dissolution both chromium nitrogen into a fully austenitic stainless steel microstructure. content was augmented from 0.09 as-delivered 0.31 L-PBF built part, causing slight expansion austenite lattice. Elongated grains internal cellular substructure were obtained modified specimens manufactured by L-PBF. (and chromium) Vickers hardness increase about 40 HV0.1, mainly interstitial solid solution strengthening. modification significantly improved corrosion resistance. resistance while retaining manufacturability microstructure illustrate potential modifying composition properties targeted dosing powders.
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ژورنال
عنوان ژورنال: Additive manufacturing letters
سال: 2021
ISSN: ['2772-3690']
DOI: https://doi.org/10.1016/j.addlet.2021.100006