Microstructural Analysis of Cavity Formed in Advanced High-Strength Steel Resistance Spot Welds

Vijayan, Vijeesh; Murugan, Siva Prasad; Son, Seong Guk; Park, Yeong-Do

doi:10.1007/s11665-020-05139-4

Cited by 6 publications

(3 citation statements)

References 17 publications

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“…As is well known, the growth direction of dendrites plays a key role in the formation of cavities during the fusion welding of metals. [ 32 ] A smooth equiaxed dendritic region and a rough and irregular dendritic region were seen to be formed during fusion welding. The latter was reported to be responsible for the void formation in the final steps of solidification.…”

Section: Resultsmentioning

confidence: 99%

“…The latter was reported to be responsible for the void formation in the final steps of solidification. [ 32 ]…”

Section: Resultsmentioning

confidence: 99%

“…The latter was reported to be responsible for the void formation in the final steps of solidification. [32] The SE images of the cast-cast joint are displayed in Figure 6. Similar to other joints, the microstructure of the weld zone contains the eutectic Si þ Al phase and primary α-Al.…”

Section: Microstructural Characterizationmentioning

confidence: 99%

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Integrity Assessment of Electron‐Beam‐Welded Joints of Additively Manufactured AlSi10Mg Components

Moeini,

Merghany,

Vogelsang

et al. 2023

Adv Eng Mater

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Laser‐based powder bed fusion of metals (PBF‐LB/M) was found to be a promising processing method for the fabrication of components with no limits of complexity by adding layers upon layers of material. However, drawbacks such as productivity and dimension limitations adversely affect the employment of the AM components in envisaged applications. This brings welding and joining techniques into play to integrate AM metal parts into larger assemblies. In this research, electron beam (EB) welding is employed to join the AlSi10Mg specimens, fabricated via two different manufacturing processes, i.e., PBF‐LB/M and casting. The main focus is to study the quasi‐static and fatigue behavior of similar and dissimilar welded joints in different combinations, namely AM‐AM, AM‐Cast, and Cast‐Cast, alongside the microstructure analyses, to investigate the correlation between the microscopic and macroscopic properties. Dissimilar welded joints demonstrate inferior material strength, which can be attributed to the inherent coarse microstructure of the cast material. Although similar welded joints of AM components suffer from a high porosity in the weld zone, they have shown a better fatigue life, which can be contributed to the equiaxed eutectic microstructure in the welded area.This article is protected by copyright. All rights reserved.

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Section: Resultsmentioning

confidence: 99%

“…The latter was reported to be responsible for the void formation in the final steps of solidification. [ 32 ]…”

Section: Resultsmentioning

confidence: 99%