Results 71 to 80 of about 27,449 (284)

Creating Ti–Fe α/β Alloys by Diffusion‐Driven Solid‐State Processing

Advanced Engineering Materials, EarlyView.
This study proposes making alloys containing fast diffusing elements that are difficult to produce by ingot metallurgy, by diffusion‐driven solid‐state HIP processing of elemental powders and low‐temperature homogenisation. Here, novel Fe‐Ti α–β alloys are formed having fine α–β lamellae, a small β prior grain size without significant intermetallics ...
Jiaqi Xu, Xun Zhang, Jack M. Donoghue, Albert D. Smith, Rahul Unnikrishnan, Rhys Thomas, Vahid Nekouie, Jie Luo, Dongchen Hu, Michael Preuss, Philip J. Withers   +10 more
wiley   +1 more source

In situ measurements of layer roughness during laser powder bed fusion additive manufacturing using low coherence scanning interferometry

Materials & Design, 2018
Layer-to-layer height measurements of additively manufactured 316L stainless steel using high speed spectral-domain optical coherence tomography (SD-OCT) are presented.
Philip J. DePond, Gabe Guss, Sonny Ly, Nicholas P. Calta, Dave Deane, Saad Khairallah, Manyalibo J. Matthews   +6 more
doaj   +1 more source

Personalized Artificial Tibia Bone Structure Design and Processing Based on Laser Powder Bed Fusion

Machines, 2022
Bone defects caused by bone diseases and bone trauma need to be implanted or replaced by surgery. Therefore, it is of great significance to design and prepare a tibial implant with good biocompatibility and excellent comprehensive mechanical properties ...
Nan Yang, Youping Gong, Honghao Chen, Wenxin Li, Chuanping Zhou, Rougang Zhou, Huifeng Shao   +6 more
doaj   +1 more source

Understanding the Stochastic Nature of Process Parameter Development of Blown Powder Laser Beam Directed Energy Deposition Additive Manufacturing of Pure Molybdenum

Advanced Engineering Materials, EarlyView.
Identified through the use of statistical design of experiments and metallographic investigation, this study exposes the stochastic origins of intergranular cracks in blown powder laser beam directed energy deposition additive manufacturing of pure molybdenum. It further demonstrates a successful crack mitigation approach with direct correlation to the
Nathaniel J. Lies, Daniel E. Driemeyer, Aaron P. Stebner   +2 more
wiley   +1 more source

Analytical Prediction of Balling, Lack-of-Fusion and Keyholing Thresholds in Powder Bed Fusion

Applied Sciences, 2021
This paper proposes analytical modeling methods for the prediction of balling, lack-of-fusion and keyholing thresholds in the laser powder bed fusion (LPBF) additive manufacturing.
Wenjia Wang, Jinqiang Ning, Steven Y. Liang   +2 more
doaj   +1 more source

Laser powder bed fusion of biodegradable magnesium alloys: process, microstructure and properties

International Journal of Extreme Manufacturing
Magnesium (Mg) alloys have gained recognition as revolutionary biomaterials, owing to their inherent degradability, favorable biocompatibility and mechanical properties.
Xuehua Wu, Junying Liu, You-wen Yang, Jing Bai, C. Shuai, J. Buhagiar, Xinghai Ning   +6 more
semanticscholar   +1 more source

Differentiation of materials and laser powder bed fusion processing regimes from airborne acoustic emission combined with machine learning

Virtual and Physical Prototyping, 2022
This study investigates the use of a low cost microphone combined with state-of-the-art machine learning (ML) algorithms as online process monitoring to differentiate various materials and process regimes of Laser-Powder Bed Fusion (LPBF).
R. Drissi-Daoudi, V. Pandiyan, R. Logé, S. Shevchik, Giulio Masinelli, Hossein Ghasemi-Tabasi, A. Parrilli, K. Wasmer   +7 more
semanticscholar   +1 more source

Precipitation Simulations of the O‐Phase in Ti2AlNb Alloys Processed by Laser Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Simulated and experimental evolution of the O‐phase volume fraction during postprocessing of a Ti‐21Al‐25Nb (at.%) alloy processed by laser powder bed fusion. With results of sensitivity to input parameters from a thorough and quantified analysis, the interfacial energy matrix/precipitate is the most relevant input parameter for the simulation of the O‐
Silvana Tumminello, Joachim Gussone, Suzana G. Fries, Marcus Rackel, Andreas Stark, Norbert Schell, Jan Haubrich, Guillermo Requena   +7 more
wiley   +1 more source

Influence of Nano-Sized SiC on the Laser Powder Bed Fusion of Molybdenum

Crystals, 2022
Consolidation of pure molybdenum through laser powder bed fusion and other additive manufacturing techniques is complicated by a high melting temperature, thermal conductivity and ductile-to-brittle transition temperature.
Nathan E. Ellsworth, Ryan A. Kemnitz, Cayla C. Eckley, Brianna M. Sexton, Cynthia T. Bowers, Joshua R. Machacek, Larry W. Burggraf   +6 more
doaj   +1 more source

Laser powder bed fusion additive manufacturing (LPBF-AM): the influence of design features and LPBF variables on surface topography and effect on fatigue properties

Critical reviews in solid state and materials sciences, 2022
The design freedom offered by additive manufacturing (AM) enables the fabrication of components with internal surfaces that are challenging to access post-manufacture.
J. Elambasseril, J. Rogers, C. Wallbrink, David Munk, M. Leary, M. Qian   +5 more
semanticscholar   +1 more source