Results 61 to 70 of about 69,300 (308)

Precipitate stability and recrystallisation in the weld nuggets of friction stir welded Al-Mg-Si and Al-Mg-Sc alloys [PDF]

, 2008
Two different precipitate hardening aluminium alloys processed by friction stir welding were investigated. The microstructure and the hardness of the as delivered materials were compared to that of the weld nugget.
A. Cabello Muñoz, A. Dédé, Andersen, B. Huneau, Blavette, Bowen, Cabello Muñoz, Cabibbo, De Geuser, Dumont, Fonda, Forbord, Frigaard, Genevois, Hirsch, Jones, Kamp, Kendig, Lapasset, Liu, Marquis, Miller, Mishra, Murayama, Murr, Nieh, Picu, Sato, Sato, Schneider, X. Sauvage, Yin   +31 more
core   +5 more sources

Phenomenological and Physically Based Modeling of Flow Stress and Strengthening Mechanism of Inconel 718

Advanced Engineering Materials, EarlyView.
Nickel‐based alloys are widely used in high‐temperature applications due to their excellent mechanical strength and oxidation resistance. However, properties such as high‐temperature strength and pronounced work‐hardening make them difficult to machine.
Soheil Rooein, Oliver Schenk, Christoph Broeckmann   +2 more
wiley   +1 more source

Non-contact ultrasonic-assisted laser welding of copper hairpins

Journal of Materials Research and Technology
The hairpin joints welding poses a significant challenge in flat wire motor manufacturing. Laser spot welding test under argon protection and laser galvanometer scanning welding test under air environment were carried out in the absence of ultrasound ...
Jie Ning, Linjie Zhang
doaj   +1 more source

Research on technological capabilities of double-electrode welding of long fillet welds [PDF]

MATEC Web of Conferences, 2019
The article presents the results of a research of the technological capabilities of double-electrode submerged arc welding of elongated fillet welds with a leg of 8 mm or more in one pass while ensuring high-quality and stable formation of weld.
Fiveyskiy Andrei, Mosin Aleksei, Zverev Sergey, Polevoy Ilya   +3 more
doaj   +1 more source

2D linear friction weld modelling of a Ti-6Al-4V T-joint [PDF]

, 2015
Most examples of linear friction weld process models have focused on joining two identically shaped workpieces. This article reports on the development of a 2D model, using the DEFORM finite element package, to investigate the joining of a rectangular Ti-
Beamish, K. A., Buhr, Clement, Colegrove, Paul A., Lee, Lucie Alexandra, McAndrew, Anthony   +4 more
core   +1 more source

An evaluation of weld metal nitrogen retention and properties in 316NL austenitic stainless steel [PDF]

, 2011
A series of tests were conducted using varying levels of nitrogen and helium in a conventional argon shielding gas when welding 316LN austenitic stainless steel. The outcome was that a 15 per cent nitrogen addition to the argon shielding gas had the most
Baker, Thomas, Galloway, Alexander, McPherson, Norman   +2 more
core   +1 more source

Effect of Laser Deoxidation on Adhesive‐Bonded Aluminum in an Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
This study investigates laser ablation of aluminum under oxygen‐free conditions. The goal is to produce oxide‐free substrates that enable improved adhesive bonding with epoxy. Optimized laser parameters (90% overlap, 300 µJ) combined with oxide‐free substrates result in the highest tensile strength of the adhesive bond.
Sandra Gerland, Finn‐Lennard Janthur, Sarah Seffer, Jörg Hermsdorf, Ludger Overmeyer, Annika Raatz   +5 more
wiley   +1 more source

Effects of Active Gases on Droplet Transfer and Weld Morphology in Pulsed-Current NG-GMAW of Mild Steel

Chinese Journal of Mechanical Engineering, 2021
The current research of narrow-gap gas metal arc welding (NG-GMAW) primarily focuses on improving the sidewall fusion and avoiding the lack-of-fusion defect. However, the high cost and operation difficulty of the methods limit the industrial application.
Guoqiang Liu, Xinhua Tang, Qi Xu, Fenggui Lu, Haichao Cui   +4 more
doaj   +1 more source

Experimental investigation of the weldability of tubular dissimilar materials using the electromagnetic welding process [PDF]

, 2017
This paper describes the magnetic pulse welding process (MPW) for tubes. Material combinations of aluminium to steel and copper to aluminium were experimentally evaluated.
De Waele, Wim, Faes, Koen, Roeygens, Lodewijk   +2 more
core   +2 more sources

Removing Oxide Layers and Retaining Oxide‐Free Steel Surfaces by Polishing in Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
In this study, the efficacy of wet mechanical polishing under an oxygen‐free atmosphere for deoxidation and the retention of an oxide‐free steel surface are elucidated using X‐ray photoelectron spectroscopy. The methodology proved successful; however, the results were highly dependent on the preparation of the solvents used to clean the samples after ...
Friedrich Bürger, Lienhard Wegewitz, Wolfgang Maus‐Friedrichs   +2 more
wiley   +1 more source