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Progress in Additive Manufacturing OnlineFirst articles

21.04.2021 | Full Research Article

Effect of infill parameters on material sustainability and mechanical properties in fused deposition modelling process: a case study

Potential characteristics of additive manufacturing (AM) such as design freedom, process control and product quality are growing it to higher demand for future manufacturing. The FDM is frequently used AM technology, to produce lightweight and …

Autoren:
Saty Dev, Rajeev Srivastava

21.04.2021 | Full Research Article

Strain history of 3D printed bilayer structure with flexible elastomer and shape memory polymer filaments during thermal tensile test

This study aimed to investigate the strain history of a 3D-printed shape-memory polymer (SMP) and elastomer bilayer specimen under thermal tensile load. First, printing conditions for producing single-layer and bilayer specimens using a fused …

Autoren:
Ziyi Su, Kazuaki Inaba, Farid Triawan

18.04.2021 | Full Research Article

Microstructure and mechanical properties of β-21S Ti alloy fabricated through laser powder bed fusion

Metastable β-titanium alloys are attractive for their high strength-to-density ratio, good hardenability, excellent fatigue behavior, and corrosion resistance. Among these alloys, β-21S, with a composition of Ti–15Mo–3Nb–3Al–0.2Si (wt%), is known …

Autoren:
Maria Argelia Macias-Sifuentes, Chao Xu, Oscar Sanchez-Mata, Sun Yong Kwon, Sila Ece Atabay, Jose Alberto Muñiz-Lerma, Mathieu Brochu

17.04.2021 | Full Research Article Open Access

Effect of bimodal powder blends on part density and melt pool fluctuation in laser powder bed fusion

The final part density in laser powder bed fusion is influenced by the powder particle size distribution. Too fine powders are not spreadable, and too coarse powders cause porosity. Powder blends, especially bimodal ones, can exhibit higher …

Autoren:
Lukas Haferkamp, Simon Liechti, Adriaan Spierings, Konrad Wegener

16.04.2021 | Full Research Article

Innovative friction stir additive manufacturing of cast 2050 Al–Cu–Li aluminum alloy

The process of friction stir welding (FSW) can be applied not only to the conventional sense of materials joining, but also as a method of solid-state processing and additive manufacturing with the use of lap joints. Two stacked lap weld builds …

Autoren:
Ilana K. Lu, Anthony P. Reynolds

16.04.2021 | Review Article

Impact of metal additive manufacturing parameters on the powder bed fusion and direct energy deposition processes: a comprehensive review

Metal additive manufacturing (AM) has been recently acknowledged as a method to produce metal parts with complex geometries and unique characteristics. In general, metal AM components are used in applications where enhanced mechanical properties …

Autoren:
Nikolaos Kladovasilakis, Paschalis Charalampous, Ioannis Kostavelis, Dimitrios Tzetzis, Dimitrios Tzovaras

15.04.2021 | Full Research Article

Understanding the corrosion behaviour of laser directed energy deposition-based additive manufacturing built Inconel 718 under acidic environments

This paper presents an investigation on the electrochemical corrosion behaviour of Laser Directed Energy Deposition (LDED)-based additive manufacturing built Inconel 718 (IN718) for the first time in various acidic environments (2 M HNO3, 2 M HCl …

Autoren:
P. K. Diljith, A. N. Jinoop, C. P. Paul, P. Krishna, S. Bontha, K. S. Bindra

14.04.2021 | Review Article

Current progress of 4D-printing technology

The combination of smart materials to print a three-dimensional (3D) product has primarily driven the development of innovative technology, or four-dimensional (4D) printing. 3D-printing technology seems to have provided extensive enhancement with …

Autoren:
Balakrishnan Subeshan, Yeshaswini Baddam, Eylem Asmatulu

26.03.2021 | Full Research Article

Advancements to commercial 2D infill for lightweighting of structural FDM components

The popularity of 3D printed parts continues to grow, seeing increased use in the design, medical, and engineering fields. With a recent expansion into structural applications and prevalent focus on mass reduction to meet fuel efficiency targets …

Autoren:
Matt Schmitt, Il Yong Kim

17.02.2021 | Full Research Article Open Access

Effects on the distortion of Inconel 718 components along a hybrid laser-based additive manufacturing process chain using laser powder bed fusion and laser metal deposition

The combination of laser powder bed fusion (LPBF), known for its geometrical freedom and accuracy, and the nozzle-based laser metal deposition process (LMD), known for its high build-up rates, has great potential to reduce the additive …

Autoren:
Eckart Uhlmann, Jan Düchting, Torsten Petrat, Erwin Krohmer, Benjamin Graf, Michael Rethmeier

11.02.2021 | Full Research Article

Additive manufacturing of Ti-6Al-4V alloy by metal fused filament fabrication (MF3): producing parts comparable to that of metal injection molding

This paper presents metal-fused filament fabrication (MF3) for manufacturing Ti-6Al-4V parts by 3D printing of green parts followed by debinding and sintering to obtain mechanical properties comparable to metal injection-molded (MIM) specimens.

Autoren:
Paramjot Singh, Vamsi K. Balla, Azim Gokce, Sundar V. Atre, Kunal H. Kate

10.02.2021 | Full Research Article

Interpolation of tensile properties of polymer composite based on Polyjet 3D printing

This research utilizes the advancement of multi-polymer jetting technology to construct structures from composite layers using polymer materials, and with goal to interpolate intermediate tensile properties that meets the application requirement …

Autor:
Mohammad Mayyas

09.02.2021 | Full Research Article

Effect of residual stress on fatigue strength of 316L stainless steel produced by laser powder bed fusion process

316L stainless steel fatigue samples produced by laser powder bed fusion (L-PBF) process were stress relieved at 900 °C for 2 h to understand the effect of residual stress on fatigue strength. Two groups of fatigue samples were produced: …

Autoren:
Wei-Jen Lai, Avinesh Ojha, Ziang Li, Carlos Engler-Pinto, Xuming Su

15.10.2020 | Full Research Article Open Access

Effect of Particle size of monomodal 316L powder on powder layer density in powder bed fusion

Powder layer density is an important measure for understanding the effect of powder on part quality in powder bed fusion. The density of thin layers, as they are deposited in powder bed fusion, differs from the density of powder in large …

Autoren:
Lukas Haferkamp, Adriaan Spierings, Marco Rusch, Dominik Jermann, Marvin A. Spurek, Konrad Wegener