Please use this identifier to cite or link to this item:
|標題:||Study of vibration welding mechanism||作者:||Kuo, C.W.
|關鍵字:||vibration welding;Inconel 690;grain growth;X-ray diffraction;crystal;structure;residual-stress;solidification;toughness;metal||Project:||Science and Technology of Welding and Joining||期刊/報告no：:||Science and Technology of Welding and Joining, Volume 13, Issue 4, Page(s) 357-362.||摘要:||
The study on the vertical and horizontal spot vibration welding of Inconel 690 alloy was carried out to observe the dendrite morphologies and estimate the temperature gradient G and growth rate R under different vibration conditions. The purpose is to further understand the mechanism of microstructure changes under vibration. Based on different temperature distributions along vertical and horizontal directions in the centre of a melting pool, it is found that vertical and horizontal vibrations induce the divergence of the nucleates site and grain growth rate then affect the grain morphologies. Vertical vibration welding creates a coarse dendrite structure with sturdy secondary and tertiary dendrite arms, and the X-ray diffraction (XRD) profile of this structure shows a strong (200) peak. Horizontal vibration welding results in grain refinement and a relatively disordered structure, which is reflected by its low XRD intensity. The study shows that vibration affects the weld structure by improving nucleates and changing growth rate.
|Appears in Collections:||材料科學與工程學系|
Show full item record
TAIR Related Article
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.