Results 51 to 60 of about 8,050 (217)

External and Internal Cracking Caused by Heat Treatment in Laser Powder Bed Fusion‐Fabricated Inconel 738LC Components

Advanced Engineering Materials, EarlyView.
Manufacturing problems such as heat treatment‐induced cracking hinder the widespread application of the laser powder bed fusion (LPBF) process to superalloys. In this study, cracks in the LPBF components of Inconel 738LC superalloy are characterized after heat treatment at various temperature ranges, revealing two distinct cracking behaviors.
Kosuke Kuwabara, Masahiro Kusano, Ayako Ikeda, Toshio Osada, Makoto Watanabe   +4 more
wiley   +1 more source

Investigating the Effect of Inclination Angle and the Influence of Scan Parameters on the Appearance and Thermal and Mechanical Properties of Filigree Tension Rods of LPBF‐Manufactured NiTi Shape‐Memory Alloys

Advanced Engineering Materials, EarlyView.
This article investigates the dependence of the properties on the manufacturing orientation in the form of the inclination angle to the build plate of LPBF‐fabricated NiTi rods with a diameter of 150–220 µm. Metallographic, chemical, thermal, and mechanical characterization show behavior under identical manufacturing conditions that ranges from ...
Sandra Herzig, Michael Werner, Christian Rotsch   +2 more
wiley   +1 more source

Influence of TiC and TiN Ceramic Reinforcements on the Microstructure, Thermal Expansion Behavior, and Tensile Properties of Invar 36 Manufactured by Laser Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
This study examines Invar composites reinforced with titanium carbide (TiC) and titanium nitride (TiN) using laser powder bed fusion (LPBF). It presents the influence of reinforcements on microstructure, tensile properties, and thermal expansion. Results show that TiC effectively strengthens Invar while maintaining low thermal expansion, whereas TiN ...
Ayodeji Nathaniel Oyedeji, Natasha Sacks, Johannes Pötschke, Björn Matthey   +3 more
wiley   +1 more source

Materials‐Driven Additive Manufacturing for Electrical Machines: Qualification‐Oriented Design Beyond Geometric Freedom

Advanced Engineering Materials, EarlyView.
This perspective reframes additive manufacturing for electrical machines as a qualification‐limited materials and architecture design problem. It links process–structure–property–performance relationships to magnetic, conducting, dielectric, and thermal property windows, highlighting where AM can enable segmented magnetic circuits, permanent magnet ...
Dénes Fodor, Loránd Szabó
wiley   +1 more source

Printing orientation effects on microstructure in LPBF-manufactured SS316L subjected to fatigue [PDF]

In this paper, printing orientation effects on the microstructure and fatigue behavior of SS316L produced via Laser Powder Bed Fusion (LPBF) were studied.
Kowalewski, Z.L., Kopec, M., Przygucka, D., Wood, P., Jóźwiak, S., Pawlik, M.   +5 more
core   +1 more source

Parameter and Microstructure Research on LPBF M50NiL steel

Progress in Additive Manufacturing
Abstract M50NiL bearing steel specimens are produced by the powder bed fusion-laser beam technology (PBF-LB), and the machinability and microstructural characteristics of bearing steel for PBF-LB have been investigated. Within a reasonable range, the relative density of specimens is positively correlated with the laser power while ...
Xin Zhang, Jiwen Li, Wei Liu, Zhenshuai Wang, Liujie Xu, Yujun Xue   +5 more
openaire   +1 more source

3D characterization of the microstructure of LPBF fabricated Inconel 718 alloy

Material Science & Engineering International Journal, 2023
Laser powder bed fusion method is popularly applied in the additive manufacturing of metal parts. The void defect and microstructure are the main factors which determine their mechanical properties. However, the characterization of microstructure and cavities is two dimensional, which is hard to show the spatial profile.
Jinwu Kang, YuanHang Huangb, Hailiang Yub   +2 more
openaire   +1 more source

On Machine Learning Control in LPBF Additive Manufacturing

The International Journal of Advanced Manufacturing Technology
Abstract Laser Powder Bed Fusion (LPBF) remains constrained by the absence of closed-loop control systems capable of preventing porosity and cracking during fabrication. This study introduces a physics-informed, feed-forward control framework that integrates synchronized acoustic emission and pyrometer data for defect detection and ...
Jan Boer, Marcin Magolon, Mohamed Elbestawi   +2 more
openaire   +1 more source

Reverse Engineering and Performance Evaluation of a Pump Impeller Fabricated With Additive Manufacturing

Chemie Ingenieur Technik, EarlyView.
This study explores the process chain for reverse engineering and additive manufacturing of a water pump impeller in a process plant. Key aspects include digital twin creation, CAD redesign, material certification, Hirtisation postprocessing, and performance testing. Insights highlight iterative design for improved precision and reliability.
Michael Stadler, Kati Schatz, Sebastian Rehfeldt, Harald Klein   +3 more
wiley   +1 more source

Physics‐Informed Generative Machine Learning for Designing Crack‐Free γ′‐Strengthened Ni‐Based Superalloys for Laser Powder Bed Fusion

Materials Genome Engineering Advances, EarlyView.
This research proposes a physics‐informed generative machine learning framework to design SHA800, a crack‐free γ′‐strengthened nickel‐based superalloy for laser powder bed fusion, achieving a 43% γ′ volume fraction and 587 HV0.2 hardness. ABSTRACT Fabricating γ′‐strengthened nickel‐based superalloys via laser powder bed fusion (LPBF) faces significant ...
Kai Guo, Dongwei Guan, Tao Hu, Yaqing Hou, Xiaoqun Li, Zhongnan Bi, Songzhe Xu, Hao Yu, Wei Xu, Weidong Xuan, Chaoyue Chen, Zhongming Ren   +11 more
wiley   +1 more source