首页|Rationalization of brittleness and anisotropic mechanical properties of H13 steel fabricated by selective laser melting
Rationalization of brittleness and anisotropic mechanical properties of H13 steel fabricated by selective laser melting
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NSTL
Elsevier
This work revealed the causes of embrittlement and anisotropy in the mechanical properties of H13 steel fabricated by selective laser melting (SLM). It was found that the low mechanical stability of the carbon-enriched retained gamma (austenite) films amongst martensite blocks transferred to high carbon twin martensite through stress induced martensitic transformation upon plastic deformation, leading to a high susceptibility to cracking. Moreover, owing to the directional solidification nature in SLM, the majority of these retained gamma films was aligned with the building direction (i.e. longitudinal direction). This significantly impaired the ductility of the steel when the load was perpendicular to these gamma films (i.e. transverse loading condition).
NSTL
Elsevier
