Journal ArticleDOI
Reduction of ductility-dip cracking susceptibility by ultrasonic-assisted GTAW
TLDR
In this paper, an improvement in DDC susceptibility can be attained for nickel filler metal 52M (FM-52M) through the superimposition of ultrasonic field during gas tungsten arc welding (GTAW), and a concept of Detrimental Grain Boundary Length (DGBL) has been proposed to elucidate DDC features in two kinds of samples: without ultrasound and with 20 kHz ultrasonic-assisted GTAW.About:
This article is published in Journal of Materials Processing Technology.The article was published on 2017-01-01. It has received 37 citations till now. The article focuses on the topics: Gas tungsten arc welding & Filler metal.read more
Citations
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Journal ArticleDOI
Invited review article: Strategies and processes for high quality wire arc additive manufacturing
TL;DR: In this article, the authors identified the materials processing challenges in wire-arc additive manufacturing (WAAM), including high residual stresses, undesirable microstructures, and solute segregation and phase transformations at solidification.
Journal ArticleDOI
Multi-scale defects in powder-based additively manufactured metals and alloys
TL;DR: In this paper , a review of multi-scale defects in AMed metals and alloys are identified and for the first time classified into three categories, including geometry related, surface integrity related and microstructural defects.
Journal ArticleDOI
Effect of ultrasonic power on porosity, microstructure, mechanical properties of the aluminum alloy joint by ultrasonic assisted laser-MIG hybrid welding
Jia Liu,Jia Liu,Hongyin Zhu,Hongyin Zhu,Li Zhong,Li Zhong,Wenfu Cui,Wenfu Cui,Yan Shi,Yan Shi +9 more
TL;DR: In this paper, the effects of ultrasonic power on porosity, microstructures and mechanical properties of the welded joint have been investigated in order to overcome the problems of high porosity and coarse crystal grains of aluminum alloy welded joints.
Journal ArticleDOI
Effect of crack-like defects on the fracture behaviour of Wire + Arc Additively Manufactured nickel-base Alloy 718
Cui E. Seow,Jie Zhang,Harry Coules,Guiyi Wu,Christopher A. Jones,Jialuo Ding,Stewart W. Williams +6 more
TL;DR: In this article, the authors observed crack-like defects with planar morphology and hot cracking characteristics in wire-plus-arc-additive manufacturing (WAAM) Alloy 718 and found that these defects were observable using conventional non-destructive testing techniques.
Journal ArticleDOI
A review on high-frequency pulsed arc welding
TL;DR: In this paper, the development of welding current waveform according to practical conditions and requirements, is an important way to improve the welding quality of various metals, especially the application of high-frequency pulsed current in arc welding.
References
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Book
The physical properties of liquid metals
Roderick I. L. Guthrie,孝道 飯田 +1 more
TL;DR: A comprehensive survey of theories, empirical relations and experimental data on the physical properties of liquid metals can be found in this paper, where the authors give a comprehensive overview of liquid metal properties.
Journal ArticleDOI
Applications of Ultrasound to the Synthesis of Nanostructured Materials
Jin Ho Bang,Kenneth S. Suslick +1 more
TL;DR: The fundamental principles of both synthetic methods and recent development in the applications of ultrasound in nanostructured materials synthesis are summarized.
Journal ArticleDOI
A High-Speed Imaging and Modeling Study of Dendrite Fragmentation Caused by Ultrasonic Cavitation
TL;DR: In this article, the dynamic behavior of ultrasound-induced cavitation bubbles and their effect on the fragmentation of dendritic grains of a solidifying succinonitrile 1 wt pct camphor organic transparent alloy have been studied experimentally using high-speed digital imaging and complementary numerical analysis of sound wave propagation, cavitation dynamics, and the velocity field in the vicinity of an imploding cavitation bubble.
Journal ArticleDOI
A read-shockley model for high-angle grain boundaries
TL;DR: In this article, the forme de la variation de l'energie du joint, in fonction of l'angle du joint is described, and compared with d'autres simulations.
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.