期刊
MATERIALS CHARACTERIZATION
卷 122, 期 -, 页码 30-35出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.matchar.2016.10.014
关键词
Titanium; Weld Yttrium; Atom probe tomography (APT); High-angle annular dark field (HAADF)
The yttrium-rich (Y-rich) precipitates that form in the fusion zone (FZ) of a Ti-5Al-1Sn-1Zr-1V-0.8Mo (wt.%) alloy, or Ti-5111, gas-tungsten arc welds (GTAW) were characterized. The filler metal was modified by a small concentration of Y in order to refine the microstructure and thus improve the FZ ductility. A high number density of nanoscale Y-rich precipitates were characterized in the weld FZ by atom probe tomography (APT) and scanning transmission electron microscopy (STEM). (C) 2016 Elsevier Inc. All rights reserved.
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