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

被引：34

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

页码：51 / 54

页数：4

共 22 条

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