National Taiwan Ocean University Institutional Repository:Item 987654321/50246
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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50246

Title: Martensite nucleation site and grain refinement in duplex titanium alloy weldment by active flux with nanoparticle addition
Authors: P.-W. Hsu
R.-S. Chen
F.-H. Kao
S.-H. Wang
J.-R. Yang
S.-Y. Tsai
J.-G. Duh
Contributors: 國立臺灣海洋大學:機械與機電工程學系
Keywords: Activating flux
Nucleation
Grain refinement
A-TIG
Titanium alloy
Date: 2011-06
Issue Date: 2018-09-27T02:22:27Z
Publisher: Science and Technology of Welding and Joining
Abstract: Abstract: The effects of activating flux containing nanoparticles on the welding microstructure and hardness distribution of titanium alloy were investigated. The fluxes, consisting of NaF with 1 wt-% of either nano-TiO2 or nanodiamond, effectively yielded refined grain size and deep weld penetration. The hardness of the weldment was close to that of the base metal for 99 wt-% NaF plus 1 wt-% diamond, leading to a desirable uniform mechanical property in the weld design. In the meantime, the transmission electron microscopy images illustrate that the nanoparticles promote β phase coarsening and martensitic α′ phase formation at the β veins.
Relation: 16(6) pp.514-521
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50246
Appears in Collections:[Department of Mechanical and Mechatronic Engineering] Periodical Articles

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