Measurement and Discussion of Low-Temperature Hot Corrosion Damage Accumulation upon Nickel-Based Superalloy Rene 104

被引：19

作者：

Birbilis, N. ^{[1
,2
]}

Buchheit, R. G. ^{[2
]}

机构：

[1] Monash Univ, Dept Mat Engn, Clayton, Vic 3800, Australia

[2] Ohio State Univ, Dept Mat Sci & Engn, Columbus, OH 43210 USA

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2008年 / 39A卷 / 13期

关键词：

D O I：

10.1007/s11661-008-9662-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This study presents quantitative information regarding the extent and morphology of hot corrosion damage evolved upon the surface of nickel-based superalloy Rene 104. Exposure times under an accelerated corrosion regime at 704 C range from 0.5 to 100 hours. Unlike oxidation, hot corrosion is observed to proceed at an alarmingly rapid rate. The evolution of high-temperature damage can be distinguished into two regimes. The first describes damage occurring at low exposure times, corresponding to what is ascribed as a phenomenon of transient oxidation, leading to a pitted surface. Following a distinguishable incubation period, hot corrosion damage proceeds such that damage depths are typically several hundreds of microns, with a generalized attack mode dominating the corrosion observed. Characteristics of the damage evolution are quantified via optical profilometry, while microscopy and XPS are used to support mechanistic interpretations.

引用

页码：3224 / 3232

页数：9

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