Oxidation behaviour of a next generation polycrystalline Mn containing Ni-based superalloy

被引：33
作者：
Pedrazzini, S. [1 ]
Child, D. J. [2 ]
West, G. [3 ]
Doak, S. S. [3 ]
Hardy, M. C. [2 ]
Moody, M. P. [1 ]
Bagot, P. A. J. [1 ]
机构：
[1] Univ Oxford, Dept Mat, Oxford OX1 3PH, England
[2] Rolls Royce PLC, Derby DE2 8BJ, England
[3] Univ Loughborough, Dept Mat, Loughborough LE11 3TU, Leics, England
来源：
SCRIPTA MATERIALIA | 2016年 / 113卷
基金：
英国工程与自然科学研究理事会;
关键词：
Ni-based superalloy; Manganese; Atom Probe Tomography; Oxidation; NICKEL-BASED SUPERALLOY; ATOM-PROBE TOMOGRAPHY; ALLOY; CRACK;
D O I：
10.1016/j.scriptamat.2015.10.001
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A prototype next-generation superalloy containing 1 at.% Mn was oxidised in air at 800 degrees C for 100 h, and compared with a commercial Ni-based superalloy. The oxide scale consisted of a multi-phase layered structure measured by Atom Probe Tomography as uppermost NiCr2Mn2O4, followed by an inhomogeneous mix of Cr2O3, spinel MnCr2O4 and rutile (Ti,Cr)O-2. The Mn did not form a homogeneous, surface passivating oxide layer. Despite this, the alloy showed a 3 x reduction of oxide thickness compared to a commercial polycrystalline Ni-based superalloy. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：51 / 54
页数：4
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