Role of porosity defects in metal 3D printing: Formation mechanisms, impacts on properties and mitigation strategies

S Wang, J Ning, L Zhu, Z Yang, W Yan, Y Dun, P Xue… - Materials Today, 2022 - Elsevier
Abstract Metal 3D printing (3DP), a state-of-the-art manufacturing technology that brings the
potential to fabricate complex structures at low cost and reduced energy consumption, has …

Additive manufacturing of nickel-based superalloys: A state-of-the-art review on process-structure-defect-property relationship

A Mostafaei, R Ghiaasiaan, IT Ho, S Strayer… - Progress in Materials …, 2023 - Elsevier
Fusion-based additive manufacturing (AM) has significantly grown to fabricate Nickel-based
superalloys with design freedom across multiple length scales. Several phenomena such as …

Powder recycling effects on porosity development and mechanical properties of Hastelloy X alloy during laser powder bed fusion process

X He, D Kong, Y Zhou, L Wang, X Ni, L Zhang… - Additive …, 2022 - Elsevier
This study compares and analyzes the morphology, size, oxygen content, and microstructure
of virgin and recycled powders after six iterations to assess the mechanical properties of the …

Actual state-of-the-art of electron beam powder bed fusion

Z Fu, C Körner - European Journal of Materials, 2022 - Taylor & Francis
As a relatively young additive manufacturing technology, Electron Beam Powder Bed Fusion
(EB-PBF) attracts increasing attention in academics and industry. Especially, the last five …

Effect of powder morphology on flowability and spreading behavior in powder bed fusion additive manufacturing process: a particle-scale modeling study

S Yim, H Bian, K Aoyagi, K Yamanaka, A Chiba - Additive Manufacturing, 2023 - Elsevier
Improving the quality of the powder bed is of great interest in the powder bed fusion-based
additive manufacturing (PBF-AM) process to reduce micro-defects in the final product. We …

Spreading behavior of Ti48Al2Cr2Nb powders in powder bed fusion additive manufacturing process: Experimental and discrete element method study

S Yim, H Bian, K Aoyagi, K Yamanaka, A Chiba - Additive Manufacturing, 2022 - Elsevier
The quality of powder beds is a key factor governing the density of bulk parts produced by
the powder bed fusion–additive manufacturing (PBF-AM) process. Conventional …

Powder spreading and spreadability in the additive manufacturing of metallic materials: a critical review

LC Capozzi, A Sivo, E Bassini - Journal of Materials Processing …, 2022 - Elsevier
This review aims to build a coherent picture of the problem of powder spreading and
spreadability in metal Additive Manufacturing (AM) because of its impact on ensuring highly …

Controlling factors determining flowability of powders for additive manufacturing: A combined experimental and simulation study

Y Zhao, Y Cui, Y Hasebe, H Bian, K Yamanaka… - Powder Technology, 2021 - Elsevier
Powder flowability affects dynamic powder behavior during additive manufacturing and
varies depending on particle size distribution, particle morphology, and surface features. In …

A comparative study on laser powder bed fusion of IN718 powders produced by gas atomization and plasma rotating electrode process

G Ruan, C Liu, H Qu, C Guo, G Li, X Li, Q Zhu - Materials Science and …, 2022 - Elsevier
The effects of powder feedstocks prepared by different methods on the processibility of the
powders and the performance of final components have largely been unexplored in metal …

[HTML][HTML] Smoke suppression in electron beam melting of inconel 718 alloy powder based on insulator–metal transition of surface oxide film by mechanical stimulation

A Chiba, Y Daino, K Aoyagi, K Yamanaka - Materials, 2021 - mdpi.com
In powder bed fusion–electron beam melting, the alloy powder can scatter under electron
beam irradiation. When this phenomenon—known as smoking—occurs, it makes the PBF …