Journal ArticleDOI
Relationship between spatter formation and dynamic molten pool during high-power deep-penetration laser welding
Reads0
Chats0
TLDR
In this paper, the formation mechanism of spatter and the corresponding relationships between the spatter formation and molten pool behavior were investigated by using the high-speed camera and the X-ray transmission imaging system during laser welding under different welding parameters.About:
This article is published in Applied Surface Science.The article was published on 2014-06-01. It has received 100 citations till now. The article focuses on the topics: Laser beam welding & Welding.read more
Citations
More filters
Journal ArticleDOI
The metallurgy and processing science of metal additive manufacturing
TL;DR: In this article, a review of additive manufacturing (AM) techniques for producing metal parts are explored, with a focus on the science of metal AM: processing defects, heat transfer, solidification, solid-state precipitation, mechanical properties and post-processing metallurgy.
Journal ArticleDOI
Additive manufacturing
TL;DR: Marshall has unique expertise in leveraging new digital tools, 3D printing, and other advanced manufacturing technologies and applying them to propulsion systems design and other aerospace materials to meet NASA mission and industry needs.
Journal ArticleDOI
Metal vapor micro-jet controls material redistribution in laser powder bed fusion additive manufacturing
TL;DR: The physics of droplet ejection under strong evaporative flow is described using simulations of the laser powder bed interactions to elucidate the experimental results and the relevance of vapor driven entrainment of metal micro-particles to similar fluid dynamic studies in other fields of science will be discussed.
Journal ArticleDOI
A Study on the Laser Spatter and the Oxidation Reactions During Selective Laser Melting of 316L Stainless Steel, Al-Si10-Mg, and Ti-6Al-4V
Marco Simonelli,Christopher Tuck,Nesma T. Aboulkhair,Ian Maskery,Ian Ashcroft,Ricky D. Wildman,Richard J.M. Hague +6 more
TL;DR: In this article, the authors studied the effect of laser spatter on the performance of 316L stainless steel, Al-Si10-Mg, and Ti-6Al-4V.
Journal ArticleDOI
Transient Dynamics of Powder Spattering in Laser Powder Bed Fusion Additive Manufacturing Process Revealed by In-Situ High-Speed High-Energy X-Ray Imaging
Qilin Guo,Cang Zhao,Luis I. Escano,Zachary Young,Lianghua Xiong,Kamel Fezzaa,Wes Everhart,Ben Brown,Tao Sun,Lianyi Chen +9 more
TL;DR: In this paper, the dynamics of powder spattering in the laser powder bed fusion (LPBF) additive manufacturing (AM) process were investigated with in-situ high-speed high-energy x-ray imaging.
References
More filters
Journal ArticleDOI
Melt pool and keyhole behaviour analysis for deep penetration laser welding
TL;DR: In this paper, the scaling law of welding depth with welding speed is in agreement with adapted modelling of this process, however, different effects depending on the weld pool dynamics and plume interaction strongly disturb the keyhole stability and are responsible for the deviation of the penetration curve from the previous modelling that agrees with a 1/Vw scaling law.
Journal ArticleDOI
Experimental study of the dynamical coupling between the induced vapour plume and the melt pool for Nd–Yag CW laser welding
TL;DR: In this paper, the effects of the interaction between the vapour generated by the ablation process occurring on the front keyhole wall (KW) during deep penetration Nd-Yag laser welding and the surrounding metallic melt pool are discussed.
Journal ArticleDOI
High quality welding of stainless steel with 10 kW high power fibre laser
TL;DR: In this paper, the penetration depth reached 18 mm at the maximum at 5 mm s−1, and porosity was generated at any fibre laser spot diameter at any fiber laser beam diameter.
Journal ArticleDOI
Elucidation of high-power fibre laser welding phenomena of stainless steel and effect of factors on weld geometry
TL;DR: In this article, the effects of laser power, power density and welding speed on the formation of sound welds were investigated with four laser beams of 130, 200, 360 and 560 mm in spot diameter, and their welding phenomena were clarified with high speed video cameras and an x-ray transmission real-time imaging system.
Journal ArticleDOI
Observation of spatter formation mechanisms in high-power fiber laser welding of thick plate
TL;DR: In this paper, the dynamics of spatter formation in high-power fiber laser welding at low welding speeds were investigated using a modified "sandwich" keyhole wall and high-speed imaging.