Oxidation behaviour of a developmental nickel-based alloy and the role of minor elements

被引：8
作者：
Taylor, Mary [1 ,4 ]
Ding, Rengen [2 ]
Mignanelli, Paul [3 ]
Hardy, Mark [3 ]
机构：
[1] Univ Birmingham, Birmingham B15 2TT, England
[2] Formerly Univ Birmingham UK, Ctr Excellence Adv Mat, Dongguan, Peoples R China
[3] Rolls Royce plc, Derby DE24 8BJ, England
[4] Univ Birmingham, Sch Met & Mat, Birmingham B15 2TT, England
来源：
CORROSION SCIENCE | 2022年 / 196卷
基金：
英国工程与自然科学研究理事会;
关键词：
Oxidation; Nickel-based alloy; Minor elements; HIGH-TEMPERATURE OXIDATION; SUPERALLOY; TI; PRECIPITATION; KINETICS; RESISTANCE; MECHANISM; GROWTH; SCALE;
D O I：
10.1016/j.corsci.2021.110002
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The oxidation kinetics of a chromia forming development nickel-based superalloy over the temperature range of 700-850 degrees C under isothermal and 100 h thermal cycles are presented. The kinetics compare favourably with similar alloys and this is attributed to the formation of (Ti,Nb,Ta)(N,C,B) precipitates found throughout the alloy. Between 840 and 850 degrees C an increase in the oxidation kinetics was observed; attributed to the dissolution of the precipitates, releasing titanium, tantalum and niobium into the alloy matrix. The results are discussed in terms of potential effect of the presence of (N,C,B) phases and stability on the oxidation kinetics.
引用
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页数：10
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