Journal ArticleDOI
Fusion zone grain refinement in aluminum alloy welds through magnetic arc oscillation and its effect on tensile behavior
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TLDR
In this paper, gas tungsten arc welds were produced in two high strength, age hardenable aluminum alloys with and without an external magnetic field, and the decrease in grain size was found to increase tensile elongation, while the effect on strength and age hardening response was only meager.Abstract:
Grain size reduction in weld fusion zones confers the advantages of an increased resistance to solidification cracking and an improvement in mechanical properties. Oscillation of the welding arc through an imposed alternating magnetic field is one of several approaches to modify weld solidification structures. In this study, gas tungsten arc welds were produced in two high strength, age hardenable aluminum alloys with and without an external magnetic field. Metallographic characterization revealed the degree of structural refinement produced by magnetic arc oscillation. The decrease in grain size was found to increase tensile elongation, while the effect on strength and age hardening response was only meager. The improvement in ductility was partially maintained in the peak aged condition also.read more
Citations
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Journal ArticleDOI
Application of ultrasonic vibrations in welding and metal processing: A status review
TL;DR: In this article, a systematic in-depth analysis of diversified aspects of ultrasonic application in metal joining and processing including its limitations, future prospects and assessments are classified and discussed, and detailed state-of-the art, experimentation and progresses of the ultrasonic vibrations and its applications in the above areas are comprehensively examined, evaluated and presented for exhaustive understandings of its physical mechanism.
Journal ArticleDOI
Improvement of mechanical properties of ferritic stainless steel weld metal by ultrasonic vibration
TL;DR: In this article, the authors investigated the effect of ultrasonic vibration on the solidification microstructure and mechanical properties of the weld metal of ferritic stainless steel by introducing directly ultrasonic vibrations into the weld molten pool using ultrasonically vibrating filler metal.
Journal ArticleDOI
Grain refining of magnesium welds by arc oscillation
TL;DR: In this article, the effects of arc oscillation amplitude, oscillation frequency, and torch travel speed on grain refining were investigated, and the effect of the alloy composition was also demonstrated.
Journal ArticleDOI
Grain refinement through arc manipulation techniques in Al–Cu alloy GTA welds
TL;DR: In this paper, the effect of three arc manipulation processes pulsed current welding, magnetic arc oscillation and the simultaneous application of pulsed currents and arc oscillations on the weld metal grain structure and tensile properties of the welds were investigated.
Journal ArticleDOI
Review on magnetically controlled arc welding process
TL;DR: In this article, the authors defined the types of external magnetic field and reviewed the development of magnetically controlled arc welding process, particularly, the effect of external Magnetic Field parameters on the welding process.
References
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MonographDOI
Mechanical Behavior of Materials
TL;DR: A balanced mechanics-materials approach and coverage of the latest developments in biomaterials and electronic materials, the new edition of this popular text is the most thorough and modern book available for upper-level undergraduate courses on the mechanical behavior of materials as discussed by the authors.
Journal ArticleDOI
Grain refinement in magnetically stirred GTA welds of aluminum alloys
B. P. Pearce,H. W. Kerr +1 more
TL;DR: The mechanisms of grain refinement have been examined for magnetically stirred gas tungsten arc (GTA) welds completely penetrating thin sheets of several aluminum alloys in this article.
Journal ArticleDOI
Weld microstructure refinement in a 1441 grade aluminium-lithium alloy
TL;DR: In this paper, the weld beads obtained under (i) continuous current (CC), (ii) pulsed current (PC), and (iii) arc oscillation (AO) conditions for their macro- and microstructural details were compared.
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