Production of metal–ceramic lattice structures by selective laser melting and carburizing or nitriding

Estonian Academy of Sciences. Proceedings

Yaroslav Holovenko¹ 

关键词: selective laser melting;    lattice structure;    ceramic;    nitriding;    carburizing.;   

DOI  :  10.3176/proc.2019.2.02

学科分类：化学（综合）

来源: Teaduste Akadeemia Kirjastus

【 摘 要 】

Selective Laser Melting (SLM) allows obtaining light-weight cellular lattice structures with complex geometry.However, producing metal–ceramic components, as well as cellular lattice structures, by SLM is limited. The present studyfocuses on obtaining metal–ceramic lattice structures by a two-step approach: SLM and post-processing. Nitriding and carburizingwere applied to stainless steel cellular lattice structures. A set of post-processing parameters is estimated in order to nitridize andcarburize metallic cellular lattice structures. Compared to the initial material, post-processed lattices exhibited higher averageVickers hardness values, measured for nitrided and carburized structures at 605 and 576 HV0.3, respectively, while the referencemicrohardness of steel 316L is 210 HV0.3. The highest average compressive yield strength value for untreated lattice was60.7 MPa and for carburized lattices, 99.3 MPa.

【 授权许可】

CC BY-NC