Results 21 to 30 of about 2,532 (142)

Evolution of the ε and γ phases in biodegradable Fe–Mn alloys produced using laser powder-bed fusion

Scientific Reports, 2021
The key feature of Fe–Mn alloys is gradual degradability and non-magneticity, with laser power bed fusion (LPBF) parameters influencing the microstructure and chemical composition.
Črtomir Donik, Jakob Kraner, Aleksandra Kocijan, Irena Paulin, Matjaž Godec   +4 more
doaj   +1 more source

On the Lightweight Potential of Laser Additive Manufactured NiTi Triply Periodic Minimal Sheet Lattices

Advanced Engineering Materials, EarlyView.
This study explores the lightweight potential of laser additive‐manufactured NiTi triply periodic minimal surface sheet lattices. It systematically investigates the effects of relative density and unit cell size on surface quality, deformation recovery, compression behavior, and energy absorption.
Haoming Mo, Shuo Qu, Shiming Gao, Xu Song   +3 more
wiley   +1 more source

Optimization of process parameters for laser powder bed fusion of K439B superalloy

Cailiao gongcheng
K439B nickel-based alloy is a novel high-temperature material capable of operating at 800 ℃， which has been widely used in critical components such as combustion chamber housings for aerospace engines.
SONG Jialong, DU Dafan, DONG Anping, LI Qing, CHEN Yulong, LIU Qiaomu, XIAO Chengbo, SUN Baode   +7 more
doaj   +1 more source

Innovative Processing of Compacted Waste Aluminum Alloy Powders via Controlled Remelting and Solidification

Advanced Engineering Materials, EarlyView.
This study demonstrates an efficient recycling route for out‐of‐spec AlSi10Mg atomized powders through compaction and arc remelting followed by suction casting. By correlating compaction load, cooling rate, and resulting microstructure, we show that intermediate pressures (50–80 kN) and rapid cooling refine dendrites, reduce porosity, and enhance ...
Mila Christy de Oliveira, Marcella Gaute Cavalcante Xavier, Abdoul‐Aziz Bogno, Piter Gargarella, José Eduardo Spinelli   +4 more
wiley   +1 more source

High-resolution in situ characterization of laser powder bed fusion via transmission X-ray microscopy at X-ray free-electron lasers

Journal of Synchrotron Radiation
In this work, we describe the instrumentation used to perform the first operando transmission X-ray microscopy (TXM) and simultaneous X-ray diffraction of laser melting simulating laser powder bed fusion on the XCS instrument at the Linac Coherent Light ...
Zane Taylor, Tharun Reddy, Lichao Fang, Patrick Oppermann, Patrick L. Kramer, Franz-Josef Decker, Matthew Seaberg, Matthieu Chollet, Tim van Driel, Alex Halavanau, Philip Hart, Matthew Dayton, Frank Seiboth, Wenxin Wang, Carolyn Gee, Abigail Wilson, Rachel Margraf-O'Neal, Gourab Chatterjee, Ying Chen, Ilana J.P. Molesky, Yifan Wang, Sara Irvine, Jade Stanton, Cynthia Melendrez, Kelsey Banta, Silke Nelson, Vivek Thampy, Kento Katagiri, Morten Haubro, Sen Liu, Dayeeta Pal, Lauren Moghimi, Christopher Tassone, Leora Dresselhaus-Marais   +33 more
doaj   +1 more source

Assessment of AlZnMgCu alloy powder modification for crack-free laser powder bed fusion by differential fast scanning calorimetry

Materials & Design, 2021
Additive manufacturing, e.g. by laser powder bed fusion (LPBF), is very attractive for lightweight constructions, as complex and stress-optimised structures integrating multiple functions can be produced within one process.
Evgeny Zhuravlev, Benjamin Milkereit, Bin Yang, Steffen Heiland, Pascal Vieth, Markus Voigt, Mirko Schaper, Guido Grundmeier, Christoph Schick, Olaf Kessler   +9 more
doaj   +1 more source

Productivity‐Driven Optimization of Laser Powder Bed Fusion Parameters for IN718 Superalloy: Process Control, Microstructure, and Mechanical Properties

Advanced Engineering Materials, EarlyView.
This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat, Guido Barale, John Stavridis, Ehsan Norouzi, Jin‐Yoo Suh, Dong‐Ik Kim, Luca Iuliano, Abdollah Saboori   +7 more
wiley   +1 more source

Review of high-strength aluminium alloys for additive manufacturing by laser powder bed fusion

Materials & Design, 2022
Laser powder bed fusion (LPBF) is one of the major additive manufacturing techniques that industries have adopted to produce complex metal components. The scientific and industrial literature from the past few years reveals that there is a growing demand
Paul A. Rometsch, Yuman Zhu, Xinhua Wu, Aijun Huang   +3 more
doaj   +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

Inverse Identification of Energy‐Dependent Laser Absorptivity in NiTi Laser Powder‐Bed Fusion via Calibrated Melt Pool Simulation

Advanced Engineering Materials, EarlyView.
A combined experimental–computational framework identifies energy‐dependent laser absorptivity for NiTi in laser powder‐bed fusion, applicable to conduction and transition modes. Single‐track experiments and thermofluid smoothed particle hydrodynamics simulations are coupled through inverse analysis of melt pool geometry.
Mohamadreza Afrasiabi, Hadi Moutablaleh, Ignatius A. Setiawan, Mehrshad Mehrpouya   +3 more
wiley   +1 more source