Welding Metallurgy of
01 Jan 1987-
About: The article was published on 1987-01-01 and is currently open access. It has received 991 citations till now. The article focuses on the topics: Welding.
Citations
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01 Jan 2016
5 citations
Cites background or methods from "Welding Metallurgy of"
...Gas metal arc welding (GMAW) is a fusion welding process in which two metals are joined by an arc forming between a consumable electrode and the workpiece (Figure 1.1) (Kou, 1987; Lancaster, 1993; Easterling, 1983)....
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...Since then, there has been a rich history of rapid technological advancement in the field of welding including gas metal arc welding, gas tungsten arc welding, stick welding, and most recently electron beam welding, laser beam welding, and friction stir welding (Kou, 1987; Lancaster, 1993)....
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...Upon the application of energy, the metal consumable is melted and transferred to the workpiece in one of three main transfer modes: Short-circuiting, globular, or spray transfer modes (Table 1.1) (Kou, 1987; Lancaster, 1993; Holliday, 1993)....
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...24 The inherent differences in thermal properties of steel and aluminum result in the observed heat extraction issues (Table 2.2) (Kou, 1987)....
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Dissertation•
01 Jan 2019
TL;DR: In this paper, the authors present a list of abbreviations for different types of figures and attributes of famous figures, including the names of trees and figures of animals, and their locations.
Abstract: ................................................................................................................................... ii ACKNOWLEDGMENT................................................................................................................ iv DEDICATION ................................................................................................................................ v LIST OF TABLES ......................................................................................................................... ix LIST OF FIGURES ....................................................................................................................... xi CHAPTER 1 ................................................................................................................................... 1
5 citations
Cites background from "Welding Metallurgy of"
...GMAW which is also known as metal inert gas (MIG) welding is a process that melts and joins metals by heating them with an arc established between a continuously fed filler wire electrode the metal substrate [85]....
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...However, the rate of deposition is relatively slow [85]....
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TL;DR: In this paper , the authors used a Finite Element based Digital Image Correlation (DIC) technique to study the crack susceptibility of AA6005 alloy using adjustable ring mode (ARM) laser technology.
5 citations
TL;DR: In this paper, the effects of electrode surface design on the resistance spot weldability and degradation of the electrode following resistance spot welding (RSW) of aluminum 6014-T4 alloy were investigated.
Abstract: In this study, the effects of electrode surface design on the resistance spot weldability and degradation of the electrode following resistance spot welding (RSW) of aluminum 6014-T4 alloy were investigated. A new patterning method that can be produced through repetitive pressurization was applied to the electrode, producing a lattice-like pattern shape on the resulting patterned electrode. When RSW was performed using the lattice patterned electrode, the contact resistance decreased because of the effective removal of the oxide film from the surface of the aluminum alloy. As a result, heat generated by resistance on the E/S interface was reduced. Moreover, the growth rate of the weld nuggets formed with the patterned electrode in the thickness direction was lower than that of the nuggets formed with the as-received electrode, and there was comparatively less Cu-Al alloying of the patterned electrode. In addition, a continuous RSW process was performed on the alloy to observe the effect of the electrode surface design on electrode sticking. The results indicated that electrode surface shape can significantly influence resistance heat generation and electrode cooling effects, as well as produce welds with different weld morphology and microstructure. Finally, it was proved that the patterned electrode suffered less electrode degradation through EPMA on the electrode surface after the continuous RSW was completed. (Received September 14, 2020; Accepted November 12, 2020)
5 citations
TL;DR: Plasma transferred arc (PTA) melting/alloying technique can be successfully used in various surface modification applications and has the potential for industrial use, replacing other more expensiv...
Abstract: Plasma transferred arc (PTA) melting/alloying technique can be successfully used in various surface modification applications and has the potential for industrial use, replacing other more expensiv...
5 citations
References
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TL;DR: In this article, the state of the art in selective laser sintering/melting (SLS/SLM) processing of aluminium powders is reviewed from different perspectives, including powder metallurgy (P/M), pulsed electric current (PECS), and laser welding of aluminium alloys.
1,172 citations
TL;DR: In this article, the authors show that the pre-existing dislocation network, which maintains its configuration during the entire plastic deformation, is an ideal modulator that is able to slow down but not entirely block the dislocation motion.
557 citations
TL;DR: In this article, the fundamental understanding of structure-properties relationship in automotive steels resistance spot welds is discussed. And a brief review of friction stir spot welding, as an alternative to RSW, is also included.
Abstract: Spot welding, particularly resistance spot welding (RSW), is a critical joining process in automotive industry. The development of advanced high strength steels for applications in automotive industry is accompanied with a challenge to better understand the physical and mechanical metallurgy of these materials during RSW. The present paper critically reviews the fundamental understanding of structure–properties relationship in automotive steels resistance spot welds. The focus is on the metallurgical characteristics, hardness–microstructure correlation, interfacial to pullout failure mode transition and mechanical performance of steel resistance spot welds under quasi-static, fatigue and impact loading conditions. A brief review of friction stir spot welding, as an alternative to RSW, is also included.
369 citations
TL;DR: In this article, a unified equation to compute the energy density is proposed to compare works performed with distinct equipment and experimental conditions, covering the major process parameters: power, travel speed, heat source dimension, hatch distance, deposited layer thickness and material grain size.
369 citations
TL;DR: This study attempted to predict solidification defects by DNN regression with a small dataset that contains 487 data points and found that a pre-trained and fine-tuned DNN shows better generalization performance over shallow neural network, support vector machine, and DNN trained by conventional methods.
314 citations