Results 41 to 50 of about 69,300 (308)

Monitoring of aluminum alloy weld formation using TIG based on passive vision

Hanjie xuebao
During the butt-welding process of thin-plate aluminum alloys, the base metal was affected by fluctuations in the joint gap and uneven heating and heat dissipation. As a result, the weld was usually defective. A passive vision sensing method was selected
Shengnan GAI, Yu WANG, Bin XU, Kai WANG, Jun XIAO, Shujun CHEN   +5 more
doaj   +1 more source

Effect of aluminium sheet surface conditions on feasibility and quality of resistance spot welding [PDF]

, 2010
A study investigating the effect of sheet surface condition on resistance spot welding (RSW) of aluminium has been carried out. This concentrates on two automotive aluminium alloys; AA5754 and AA6111, used for structural and closure applications ...
Briskham, Crinon, D. Boomer, Han, Hunter, L. Han, Li, M. Shergold, M. Thornton, Miller, Rashid, Ronnhult, Spinella, Thornton, Wheeler   +14 more
core   +1 more source

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

Advanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar, Dhanadeep Dutta, G. Bharat Reddy   +2 more
wiley   +1 more source

Investigation of Intermetallics Formation and Joint Performance of Laser Welded Ni to Al

Applied Sciences, 2023
In this paper, laser welding Ni to Al using pulsed wave (PW) and continuous wave (CW) lasers was investigated. Weld quality and strength were evaluated in terms of cross-section examination, intermetallic compounds formation, microhardness, shear test ...
Lichao Cao, Yongfeng Liu, Hui-Chi Chen, Li Zhang, Hua Sun, Guijun Bi   +5 more
doaj   +1 more source

Effect of the morphology of the martensite-austenite phase on fracture of the weld heat affected zone in vanadium and niobium microalloyed steels [PDF]

, 2010
In multipass welding, the intercritically reheated coarse grained heat affected zone demonstrates the worst toughness in welded joint, since it contains a high-carbon martensite with some retained austenite, known as M-A phase, which is brittle and ...
Baker, T.N., Li, Y.
core   +1 more source

A comprehensive study on the microstructure and mechanical properties of arc girth welded joints of spiral welded high strength API X70 steel pipe [PDF]

, 2020
In the paper, the effect of welding technology on the microstructure and mechanical properties of girth welded joints was presented. Metallographic examinations based on light microscopy and SEM were conducted on girth welded joints of API X70 steel pipe.
De Waele, Wim, Dymek, S., Hertelé, Stijn, Kopyściański, M., Niagaj, J., Rykała, J., Węglowski, M. St.   +6 more
core   +1 more source

Reduction of Oxide Inclusions During the High‐Frequency Welding of Steel via a Nonthermal Ar/H2 Plasma Jet

Advanced Engineering Materials, EarlyView.
High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin, Lienhard Wegewitz, René Gustus, Henning Wiche, Wolfgang Maus‐Friedrichs   +4 more
wiley   +1 more source

Online inspection technology for weld formation quality of welded structural components

Hanjie xuebao
Currently, the non-destructive testing for weld formation quality of welded structural components still predominantly employs visual evaluation with low efficiency and low accuracy.
Hao WANG, Yupeng CHI, Rongchao FANG, Chao CHEN, Xiaohui ZHAO   +4 more
doaj   +1 more source

Microstructure homogeneity and mechanical properties of laser-arc hybrid welded AZ31B magnesium alloy

Journal of Magnesium and Alloys
Laser-arc hybrid welding of AZ31B magnesium alloy was carried out, the effects of welding parameters on weld formation, microstructure homogeneity and mechanical properties were investigated.
Yongkang Gao, Kangda Hao, Lianyong Xu, Yongdian Han, Lei Zhao, Wenjing Ren, Hongyang Jing   +6 more
doaj   +1 more source

Micro Thin Film Sensor Embedding in Metal Structures for Rapid Production of Miniature Smart Metal Tooling [PDF]

, 2004
In-situ monitoring and control of temperature and strain is important to improve product quality for numerous mesoscale manufacturing processes. However, it is difficult for conventional sensors to provide measurements with a high spatial and temporal ...
Cheng, Xudong, Choi, Hongseok, Datta, Arindom, Li, Xiaochun, Schwieso, Patrick   +4 more
core   +1 more source