OXIDATION BEHAVIOR OF A NEW Ni-Fe-Cr-Al ALLOY FOR ELEVATED TEMPERATURE APPLICATIONS

被引：0
作者：
Deodeshmukh, V. P. [1 ]
Matthews, S. J. [1 ]
Klarstrom, D. L. [1 ]
机构：
[1] Haynes Int Inc, Res & Technol Dept, Kokomo, IN 46904 USA
来源：
TMS 2009 138TH ANNUAL MEETING & EXHIBITION - SUPPLEMENTAL PROCEEDINGS, VOL 2: MATERIALS CHARACTERIZATION, COMPUTATION AND MODELING | 2009年
关键词：
HR-224; alloy; Alumina- and Chromia-formers; Oxidation resistance; Water vapor;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A new type of alumina-forming Ni-Fe-Cr-Al based alloy (HAYNES (R) HR-224 (TM) alloy) has been recently developed for applications in harsh oxidizing environments. The new developmental alloy is a solid solution strengthened alloy designed to exhibit excellent oxidation resistance and fabricability (i.e. weldability, formability, and processing) characteristics. The cyclic oxidation resistance of HR-224 alloy is superior to several chromia-forming heat-resistant alloys in harsh oxidizing environments, such as flowing air, air with water vapor, and combustion (i.e. burner-rig oxidation) environments. Preliminary results on a production-scale heat of HR-224 alloy indicate that it exhibits improved or comparable oxidation resistance to the alumina-forming Ni-Cr-Al based 214 (R) alloy. Isothermal oxidation testing at 982 degrees C confirmed that alloy indeed forms a continuous, adherent, and slow-growing Al2O3 scale, while 214 alloy formed a duplex oxide structure consisting of Al2O3 scale beneath a spinel (NiAl2O4) layer.
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页码：205 / 212
页数：8
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