Effects of alloyed aluminum and titanium on the oxidation behavior of INCONEL 740 superalloy

Title
Effects of alloyed aluminum and titanium on the oxidation behavior of INCONEL 740 superalloy
Authors
정우상심재혁김동익Majid Abbasi
Keywords
Superalloys; Electron microscopy; Aluminum; Titanium; Oxidation; Grain boundaries
Issue Date
2016-02
Publisher
Journal of alloys and compounds
Citation
VOL 658, 210-221
Abstract
An attempt has been made to improve the oxidation resistance of the INCONEL 740 nickel-base superalloy by altering its composition. The effects of aluminum and titanium were studied in particular. Electron microscopy was utilized to characterize and quantify the oxides. The addition of aluminum up to 2.4 wt.% at low titanium contents provides the lowest mass gain. Aluminum internal and grain boundary oxidation, especially at nickel high-angle boundaries, was observed. The surface oxide consists of predominantly Cr2O3. The oxide thickness and defect density increase with the increasing titanium content.
URI
http://pubs.kist.re.kr/handle/201004/59104
ISSN
09258388
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KIST Publication > Article
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