Comparison of the phase compositions in Alloy 718 measured by atom probe tomography and predicted by thermodynamic calculations

被引：40

作者：

Miller, MK ^{[1
]}

Babu, SS ^{[1
]}

Burke, MG ^{[1
]}

机构：

[1] Oak Ridge Natl Lab, Div Met & Ceram, Microscopy & Microanalyt Sci Grp, Oak Ridge, TN 37831 USA

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2002年 / 327卷 / 01期

关键词：

superalloy; alloy; 718; atom probe; alloy phase composition;

D O I：

10.1016/S0921-5093(01)01881-0

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A comparison has been made of the phase compositions predicted by thermodynamic calculations and measured by atom probe tomography in a commercial Alloy 718 nickel based superalloy. The results indicate that caution should be taken in the application of the Ni-Fe database/Thermocalc(TM) to superalloys because some of the predicted phases may not correspond to actual microstructure of commercial alloys. When microstructural information is taken into account and absent phases are suppressed in the calculations, reasonable agreement between the atom probe data and the thermodynamic predictions may be achieved. Published by Elsevier Science B.V.

引用

页码：84 / 88

页数：5

共 10 条

[1]

BURKE MG, 1989, J PHYS-PARIS, V50, pC8395

[2]

BURKE MG, 1991, P ALL PHAS STAB DES, V186, P215

[3]

Burke MG, 1991, P SUP 718 625 VAR DE, P337

[4]

LORIA EA, 1989, P SUP 718 MIN MET MA

[5]

Miller M. K., 2000, ATOM PROBE TOMOGRAPH

[6]

Miller MK, 1999, JAPAN INSTITUTE OF METALS, PROCEEDINGS, VOL 12, (JIMIC-3), PTS 1 AND 2, P73

[7] Intragranular precipitation in alloy 718 [J].

Miller, MK ;

Babu, SS ;

Burke, MG .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1999, 270 (01) :14-18

[8]

MILLER MK, 1991, P ALL PHAS STAB DES, V186, P223

[9]

Miller MS, 2000, LECT NOTES COMPUT SC, V1839, P63

[10] THE THERMO-CALC DATABANK SYSTEM [J].

SUNDMAN, B ;

JANSSON, B ;

ANDERSSON, JO .

CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY, 1985, 9 (02) :153-190

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