Results 21 to 30 of about 2,203 (204)

In situ X-ray imaging of melt pool dynamics in underwater arc welding

Materials & Design, 2019
The dynamic behavior of the underwater melt pool was firstly in-situ observed with the X-ray transmission method. A method for quantitatively characterizing the melt pool stability was pioneered.
Changsheng Xu, Ning Guo, Xin Zhang, Haiyue Jiang, Hao Chen, Jicai Feng   +5 more
doaj   +1 more source

Investigation on the Dynamic Behavior of Weld Pool and Weld Microstructure during DP-GMAW for Austenitic Stainless Steel

Metals, 2020
The influence of heat and droplet transfer into weld pool dynamic behavior and weld metal microstructure in double-pulsed gas metal arc welding (DP-GMAW) was investigated by the self-designed high-speed welding photography system. The heat input, the arc
Tao Chen, Songbai Xue, Peng Zhang, Bo Wang, Peizhuo Zhai, Weimin Long   +5 more
doaj   +1 more source

Plazma arc joining of thin plate constructions/Plazminis plonalakščių konstrukcuijų sujungimas

Journal of Civil Engineering and Management, 1995
Heat and fluid flow exist not only in ingots or big size welds but also in small size microplasma arc melted weld pool. Edge weld pool geometry depend from interfacial energy, direction of the fluid flows in the weld pool caused by thermocapilary ...
A. V. Valiulis
doaj   +1 more source

Material Flow Behavior on Weld Pool Surface in Plasma Arc Welding Process Considering Dominant Driving Forces

Applied Sciences, 2020
In this study, the effect of oxygen in the shielding gas on the material flow behavior of the weld pool surface was discussed to clarify the dominant driving weld pool force in keyhole plasma arc welding (KPAW). To address this issue, the convection flow
Manh Ngo Huu, Anh Nguyen Van, Tuan Nguyen Van, Dang Tran Hai, Thanh Nguyen Van, Dung Nguyen Tien, Thanh-Hai Nguyen   +6 more
doaj   +1 more source

Remote laser welding of Zn coated IF steel and 1050 aluminium alloy: processing, microstructure and mechanical properties

Journal of Materials Research and Technology, 2022
The integrity of steel-aluminium dissimilar alloy joints is dependent on the intermetallic phases (IMCs) and the extent of the bonding area. The excessive growth of brittle AlxFex IMCs within the weld pool and interfaces is disadvantageous due to the ...
H.R. Kotadia, P. Franciosa, S. Jabar, D. Ceglarek   +3 more
doaj   +1 more source

Research of nanoscale titanium carbides influence on the structure and properties of weld metal in automatic submerged arc welding

MATEC Web of Conferences, 2018
The influence of nanoscale refractory titanium carbide particles on the structure and properties of weld metal in automatic submerged arc welding is considered.
Kobernik Nikolay V., Pankratov Alexander S.   +1 more
doaj   +1 more source

THE WELD POOL DYNAMICS IN THE TANDEM WELDING

International Journal of Research in Engineering and Technology, 2015
The tandem welding process establishes a means for increasing both the travel speed and deposition rate. Electromagnetic force models of the tandem weld pool are developed. Thermal fields and flow fields under tandem heat sources are simulated.
openaire   +1 more source

Prediction of internal welding penetration based on IR thermal image supported by machine vision and ANN-model during automatic robot welding process

Journal of Advanced Joining Processes
Welding quality is a critical criterion for evaluating welding operations. Traditional evaluation methods suffer from drawbacks such as lack of objectivity, untimeliness, and high costs.
Yunfeng Wang, Wonjoo Lee, Seungbeom Jang, Van Doi Truong, Yuhyeong Jeong, Chanhee Won, Jangwook Lee, Jonghun Yoon   +7 more
doaj   +1 more source

Comparative evaluation of wear resistance surfacing with feeding of nanooxides and nanocarbides to weld pool

Mechanics and Advanced Technologies, 2020
The paper presents the results of testing wear resistance of deposited metal, modified by silicon nanooxides and titanium nanocarbides through the weld pool with scheme of its feeding by paraffin rod.
V. D. Kuznetsov, D. V. Stepanov
doaj   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source