On the build orientation effect in as-printed and as-sintered bending properties of 17-4PH alloy fabricated by metal fused filament fabrication


          

刊名：Rapid prototyping journal
作者：Suwanpreecha Chanun（National Metal and Materials Technology Center (MTEC)）
Manonukul Anchalee（National Metal and Materials Technology Center (MTEC)）
刊号：780C0104
ISSN：1355-2546
出版年：2022
年卷期：2022, vol.28, no.6
页码：1076-1085
总页数：10
分类号：TH
关键词：Mechanical properties；Fused deposition modelling；Sintering；Orientation；Additive manufacturing；Metal fused filament fabrication；Bending；Build orientation；Fracture surface；Layer sliding
参考中译：
语种：eng
文摘：Purpose The purpose of this paper is to systematically investigate the influence of build orientation on the anisotropic as-printed and as-sintered bending properties of 17-4PH stainless steel fabricated by metal fused filament fabrication (MFFF).Design/methodology/approach The bending properties of 17-4PH alloy fabricated by low-cost additive manufacturing (MFFF) using three build orientations (the Flat, On-edge and Upright orientations) are examined at both as-printed and as-sintered states.Findings Unlike tensile testing where the Flat and On-edge orientations provide similar as-sintered tensile properties, the On-edge orientation produces a significantly higher bending strain with a lower bending strength than the Flat orientation. This arises from the printed layer sliding due to the Poisson's effect, which is only observed in the On-edge orientation together with the alternated layers of highly deformed and shifted voids. The bending properties show that the Upright orientation exhibits the lowest bending properties and limited plasticity due to the layer delamination.Originality/value This study is the first work to study the effect of build orientation on the flexural properties for MFFF. This work gives insight information into anisotropy in flexural mode for MFFF part design.



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