AI Article Synopsis
- The study investigated the welding of 6061 aluminum alloy and 304 stainless steel using hybrid cold metal transfer (CMT) with an external axial magnetic field.
- The application of the magnetic field improved the spreading of aluminum weld metal on the steel, increasing the bonding area, while high alternating frequencies negatively affected wetting behavior.
- With the optimal conditions, the intermetallic compound layer was reduced, and the tensile strength of the joint increased significantly to 130.2 MPa, marking a 61.6% improvement over conventional CMT welding.
Article Abstract
The 6061 aluminum alloy and 304 stainless steel were welded by hybrid cold metal transfer (CMT) welding with external axial magnetic field. The effects of magnetic intensity and frequency on joint microstructure and mechanical properties were studied. It was found that the magnetic field can promote the spreading of aluminum weld metal on the steel surface and thus increase the bonding area of Al/steel butt joint. The welding process stability improved, while the wetting behavior worsened with the introduction of alternating frequencies. The thickness of the intermetallic compound (IMC) layer at Al/steel interface was reduced to 3 μm with the coil current of 2 A. The application of the magnetic field promoted the aggregation of Si atoms at the interface and inhibited the formation of brittle (Al, Si)Fe phase. The fracture paths were transformed from (Al, Si)Fe layer to AlFeSi layer with the application of the magnetic field. The maximum tensile strength reached 130.2 MPa, an increase of 61.6% in comparison to the normal CMT process.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7475898 | PMC |
| http://dx.doi.org/10.3390/ma13163601 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
What has brain diffusion magnetic resonance imaging taught us about chronic primary pain: a narrative review.
Pain
February 2025
Department of Anesthesiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada.
Chronic pain is a pervasive and debilitating condition with increasing implications for public health, affecting millions of individuals worldwide. Despite its high prevalence, the underlying neural mechanisms and pathophysiology remain only partly understood. Since its introduction 35 years ago, brain diffusion magnetic resonance imaging (MRI) has emerged as a powerful tool to investigate changes in white matter microstructure and connectivity associated with chronic pain.
View Article and Find Full Text PDFEvidence for a metal-bosonic insulator-superconductor transition in compressed sulfur.
Proc Natl Acad Sci U S A
January 2025
State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China.
The abrupt drop of resistance to zero at a critical temperature is a key signature of the current paradigm of the metal-superconductor transition. However, the emergence of an intermediate bosonic insulating state characterized by a resistance peak preceding the onset of the superconducting transition has challenged this traditional understanding. Notably, this phenomenon has been predominantly observed in disordered or chemically doped low-dimensional systems, raising intriguing questions about the generality of the effect and its underlying fundamental physics.
View Article and Find Full Text PDFSafety concerns associated with the use of benzodiazepines during MRI.
Nursing
December 2024
Tammy McClung is a nursing instructor of the RN to BSN program at the College of Brockport, State University of New York, in Brockport, N.Y. She also holds a per diem clinical position in urgent care at the University of Rochester.
Magnetic resonance imaging (MRI) is a powerful diagnostic tool that uses strong magnetic fields and radio waves to create detailed images of the body's internal structures. This article examines the challenges associated with MRI, particularly focusing on patient anxiety and claustrophobic reactions that can lead to aborted scans. It discusses the use of anxiolytics, especially benzodiazepines, to manage these issues, while highlighting the potential risks of respiratory depression and other adverse outcomes in select patient populations.
View Article and Find Full Text PDFNonlinear Optics in Two-Dimensional Magnetic Materials: Advancements and Opportunities.
Nanomaterials (Basel)
January 2025
Institute of Information Photonics Technology, School of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China.
Nonlinear optics, a critical branch of modern optics, presents unique potential in the study of two-dimensional (2D) magnetic materials. These materials, characterized by their ultra-thin geometry, long-range magnetic order, and diverse electronic properties, serve as an exceptional platform for exploring nonlinear optical effects. Under strong light fields, 2D magnetic materials exhibit significant nonlinear optical responses, enabling advancements in novel optoelectronic devices.
View Article and Find Full Text PDFOptoelectronic Properties of Shallow Donor Atom in 2D-Curved Nanostructures Under External Electric and Magnetic Fields.
Nanomaterials (Basel)
December 2024
Grupo de Materia Condensada-UdeA, Instituto de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín 050010, Colombia.
Using the effective mass approximation and the finite difference method, we examined the linear, non-linear, and total optical absorption coefficients (OAC), as well as the relative refractive index coefficients (RIC) variations for an off-center shallow donor impurity in a 2D-curved electronic nanostructure subjected to external electric and magnetic fields. Our results reveal that the peak positions of the OAC and RIC are susceptible to the geometrical angles, the impurity position, and the strength of the applied electric and magnetic fields. In particular, the positions of the OAC and RIC peaks can be shifted towards blue or red by adjusting the geometric angle.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!