Results 21 to 30 of about 7,004 (249)

Effect of Arc Length on Oxygen Content and Mechanical Properties of Weld Metal during Pulsed GMAW

Crystals, 2022
Pulsed gas metal arc weld (GMAW) was widely used for the advantages of controllable heat input, all-position welding, and no spatter. In order to obtain an ideal welding process, the stability of the arc length was studied in many researches, but the ...
Jiachen Xu, Xiaoxiao Zhou, Dawei Zhu
doaj   +1 more source

Corrosion Behavior of Weathering Steel Q450NQR1 and Welded Metal using Flux-Cored Wire in 0.01 mol/L NaHSO3 Solution

International Journal of Electrochemical Science, 2020
In this paper, the corrosion behaviors of weathering steel Q450NQR1 and weld metals of solid and flux-cored wires were studied by microstructure observation, electrochemical techniques and scanning electron microscopy.
Minghua Zhang, Shuai Wu, Qianchao Zhang, Tangqing Wu, Bo Hong, Yifeng Xiao, Jinwen Qian, Fucheng Yin   +7 more
doaj   +1 more source

Microstructure and mechanical properties of ethylene pyrolysis furnace tube weld joints after service

Journal of Advanced Joining Processes
The microstructure and mechanical properties of weld joints in ethylene pyrolysis furnace (Cr25Ni35NbM alloy and Cr35Ni45NbM alloy tube) after service were investigated in this work.
Jingfeng Guo, Xiangping Guo, Xiaoyu Li, Guobing Hu, Wenwen Liu   +4 more
doaj   +1 more source

Effects of Fluorides in the Flux Cored Wire on the Oxygen Content of Weld Metal [PDF]

한국해양공학회지, 2019
Various fluorides, i.e., CaF2, Na3AlF6, K2SiF6, MnF3, MgF2, were added to the flux cored wire, and their effects on the oxygen content of the weld metal were investigated.
Joo-hyeon Cha, Kook-soo Bang
doaj   +1 more source

Investigation on three different weldments on performance of SA516 Gr70 steel material

Alexandria Engineering Journal, 2019
In the present investigation, 10 mm thick SA516Gr70 steel plate welded using three different consumables includes solid wire (ER70S-6), flux cored wire (E71T-1C) and metal cored wire (E70C-6M) of 1.2 mm in size.Carbon steel plate SA516Gr70 welded using ...
Dr. Pritesh J. Prajapati, Dr. Vishvesh J. Badheka   +1 more
doaj   +1 more source

Predicting Susceptibility to Solidification Cracking and Liquation Cracking by CALPHAD

Metals, 2021
In welding, liquation cracking can occur in the partially melted zone, leaving open cracks along the edge of the weld bead. Likewise, solidification cracking can occur in the mushy zone, leaving open cracks inside the weld bead (which is called the weld ...
Sindo Kou
doaj   +1 more source

Formation mechanism of macrosegregation in dissimilar-filler welding of aluminum alloys

Journal of Materials Research and Technology, 2022
Dissimilar-filler welding is widely used for joining aluminum components. However, macrosegregation that will degrade the performance of the weld joint commonly occurs within the weld metal, because of the compositional difference between the filler and ...
Qipeng Dong, Xiaming Chen, Hiromi Nagaumi, Xiaonan Wang, Bo Zhang   +4 more
doaj   +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

Influencing mechanisms of C content and aging treatment on intergranular corrosion sensitivity of 316 stainless steel weld metals

Journal of Materials Research and Technology
For analyzing the intergranular corrosion sensitivity of 316 stainless steel weld metals with different C contents, the intergranular corrosion behaviors of the weld metals under as-welded and different as-aged states were evaluated by both the H2SO4 ...
Shitong Wei, Langlang Zhao, Shanping Lu
doaj   +1 more source

Variation of chemical composition of high strength low alloy steels with different groove sizes in multi-pass conventional and pulsed current gas metal arc weld depositions

Defence Technology, 2015
25 mm thick micro-alloyed HSLA steel plate is welded by multi-pass GMAW and P-GMAW processes using conventional V-groove and suitably designed narrow gap with 20 mm (NG-20) and 13 mm (NG-13) groove openings.
K. Devakumaran, M.R. Ananthapadmanaban, P.K. Ghosh   +2 more
doaj   +1 more source