Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Microcrack mitigation during laser scanning of tungsten via preheating and alloying strategies

Journal Article · · Additive Manufacturing
Not Available
Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE; USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1814654
Alternate ID(s):
OSTI ID: 1826462
Report Number(s):
LLNL-JRNL--819460; S2214860421003225; 102158; PII: S2214860421003225
Journal Information:
Additive Manufacturing, Journal Name: Additive Manufacturing Journal Issue: C Vol. 46; ISSN 2214-8604
Publisher:
ElsevierCopyright Statement
Country of Publication:
Netherlands
Language:
English

References (47)

Energy Coupling Mechanisms and Scaling Behavior Associated with Laser Powder Bed Fusion Additive Manufacturing journal April 2019
Physical changes in tungsten and thoriated tungsten electrodes after subsecond heating journal September 1996
Measurement of thermophysical properties by a pulse-heating method: Thoriated tungsten in the range 1200 to 3600 K journal November 1994
A new finite element model for welding heat sources journal June 1984
Implementation of a thermomechanical model for the simulation of selective laser melting journal April 2014
The Effect of Powder Characteristics on Build Quality of High-Purity Tungsten Produced via Laser Powder Bed Fusion (LPBF) journal January 2020
Overview No. 3 Fracture-mechanism maps and their construction for f.c.c. metals and alloys journal May 1979
Kinetic evaporation and condensation rates and their coefficients journal May 1992
Yielding and fracture in tungsten and tungsten-rhenium alloys journal February 1969
Optical properties of TiO2, Y2O3 and CeO2 thin films deposited by electron beam evaporation journal February 1993
Analysis of laser-induced microcracking in tungsten under additive manufacturing conditions: Experiment and simulation journal August 2020
Selective Laser Melting process optimization of Ti–Mo–TiC metal matrix composites journal January 2019
On the mechanical behaviour of titanium alloy TiAl6V4 manufactured by selective laser melting: Fatigue resistance and crack growth performance journal March 2013
Fracture toughness of polycrystalline tungsten alloys journal November 2010
The nature of the brittle-to-ductile transition of ultra fine grained tungsten (W) foil journal May 2015
Tungsten–vanadium–yttria alloys for fusion power reactors (II): Mechanical characterization journal January 2016
Selective laser melting of tungsten and tungsten alloys journal April 2018
Effect of processing parameters on the densification, microstructure and crystallographic texture during the laser powder bed fusion of pure tungsten journal January 2019
Crack suppression in additively manufactured tungsten by introducing secondary-phase nanoparticles into the matrix journal February 2019
Effect of processing parameters on microstructure and properties of tungsten heavy alloys fabricated by SLM journal August 2019
Fully dense and crack free molybdenum manufactured by Selective Laser Melting through alloying with carbon journal November 2019
On the role of carbon in molybdenum manufactured by Laser Powder Bed Fusion journal November 2020
Selective laser melting of Ti6Al4V alloy for biomedical applications: Temperature monitoring and microstructural evolution journal January 2014
Thermal shock behavior of tungsten based alloys manufactured via powder injection molding journal November 2013
Densification and crack suppression in selective laser melting of pure molybdenum journal September 2017
Cracking in laser additively manufactured W: Initiation mechanism and a suppression approach by alloying journal January 2019
W–2wt.%Y2O3 composite: Microstructure and mechanical properties journal March 2012
Mechanical and microstructural investigations of tungsten and doped tungsten materials produced via powder injection molding journal July 2015
Use of tungsten material for the ITER divertor journal December 2016
Analytical expressions for thermophysical properties of solid and liquid tungsten relevant for fusion applications journal December 2017
Additive manufacturing of pure tungsten by means of selective laser beam melting with substrate preheating temperatures up to 1000 ∘C journal May 2019
Residual stress via the contour method in compact tension specimens produced via selective laser melting journal September 2014
RARE EARTHS. I. VAPORIZATION OF La 2 O 3 AND Nd 2 O 3 : DISSOCIATION ENERGIES OF GASEOUS LaO AND NdO 1 journal August 1961
3D printing of high-strength aluminium alloys journal September 2017
Strain-rate dependence of the brittle-to-ductile transition temperature in tungsten journal June 2007
Dislocation dynamic modelling of the brittle–ductile transition in tungsten journal October 2009
Brittle–ductile transitions in polycrystalline tungsten journal July 2010
Energy-Coupling Mechanisms Revealed through Simultaneous Keyhole Depth and Absorptance Measurements during Laser-Metal Processing journal June 2020
Thermal boundary resistance journal July 1989
Vaporization of Rare-Earth Oxides journal May 1960
Selective Laser Melting of Crack-Free High Density M2 High Speed Steel Parts by Baseplate Preheating journal October 2014
Controlling Factors for the Brittle-to-Ductile Transition in Tungsten Single Crystals journal November 1998
Assessing and comparing influencing factors of residual stresses in selective laser melting using a novel analysis method
  • Kruth, Jean-Pierre; Deckers, Jan; Yasa, Evren
  • Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, Vol. 226, Issue 6 https://doi.org/10.1177/0954405412437085
journal February 2012
Additive manufacturing of Ni-based superalloys: The outstanding issues journal October 2016
Investigation on reducing distortion by preheating during manufacture of aluminum components using selective laser melting journal February 2014
Direct measurements of laser absorptivity during metal melt pool formation associated with powder bed fusion additive manufacturing processes journal August 2018
W-1% La2O3 Submitted to a Single Laser Pulse: Effect of Particles on Heat Transfer and Surface Morphology journal May 2018

Similar Records

Local strain release due to microcracking in laser melted tungsten
Journal Article · Fri Dec 31 19:00:00 EST 2021 · Procedia CIRP · OSTI ID:1899176

Analysis of laser-induced microcracking in tungsten under additive manufacturing conditions: Experiment and simulation
Journal Article · Fri Jul 31 20:00:00 EDT 2020 · Acta Materialia · OSTI ID:1776999