Strengthening of iron aluminide alloys by atomic ordering and Laves phase precipitation for high-temperature applications

D. D. Risanti; G. Sauthoff

doi:10.1016/j.intermet.2004.12.029

Strengthening of iron aluminide alloys by atomic ordering and Laves phase precipitation for high-temperature applications

D. D. Risanti^*, G. Sauthoff

^*Corresponding author for this work

Max Planck Institute for Iron Research

Research output: Contribution to journal › Article › peer-review

73 Citations (Scopus)

Abstract

The ternary system Fe-Al-Ta allows the formation of the hard and brittle ternary Laves phase Ta(Fe_0.5+x,Al_0.5-x)₂ with hexagonal C14 structure. The present study concentrates on Fe-Al-Ta alloys with small Ta contents between 2 and 6 at.% and various Al contents between 0 and 45 at.%. The phase equilibria in the ternary Fe-Al-Ta system at 1000°C are studied experimentally for determination of the solubility limits of Ta in iron aluminide matrices and types of phases and structures which may occur at high temperatures. It is observed that small amounts of Laves phase together with atomic ordering increase the yield stress and affect ductility in a complex way.

Original language	English
Pages (from-to)	1313-1321
Number of pages	9
Journal	Intermetallics
Volume	13
Issue number	12
DOIs	https://doi.org/10.1016/j.intermet.2004.12.029
Publication status	Published - Dec 2005
Externally published	Yes

Keywords

A. Iron aluminides (based on FeAl)
A. Iron aluminides (based on FeAl)
B. Brittleness and ductility
B. Mechanical properties at high temperatures

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10.1016/j.intermet.2004.12.029

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title = "Strengthening of iron aluminide alloys by atomic ordering and Laves phase precipitation for high-temperature applications",

abstract = "The ternary system Fe-Al-Ta allows the formation of the hard and brittle ternary Laves phase Ta(Fe0.5+x,Al0.5-x)2 with hexagonal C14 structure. The present study concentrates on Fe-Al-Ta alloys with small Ta contents between 2 and 6 at.% and various Al contents between 0 and 45 at.%. The phase equilibria in the ternary Fe-Al-Ta system at 1000°C are studied experimentally for determination of the solubility limits of Ta in iron aluminide matrices and types of phases and structures which may occur at high temperatures. It is observed that small amounts of Laves phase together with atomic ordering increase the yield stress and affect ductility in a complex way.",

keywords = "A. Iron aluminides (based on FeAl), A. Iron aluminides (based on FeAl), B. Brittleness and ductility, B. Mechanical properties at high temperatures",

author = "Risanti, {D. D.} and G. Sauthoff",

note = "Funding Information: The financial support by the Deutsche Forschungsgemeinschaft (DFG) is gratefully acknowledged. The authors would like to thank Mr M. Kulse, Mrs H. B{\"o}gerhausen, Mr U. Wellms and Mr G. Bialkowski for preparing the alloys, metallographic work, EPMA measurements, sample preparation and mechanical testing, respectively. ",

year = "2005",

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doi = "10.1016/j.intermet.2004.12.029",

language = "English",

volume = "13",

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journal = "Intermetallics",

issn = "0966-9795",

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TY - JOUR

T1 - Strengthening of iron aluminide alloys by atomic ordering and Laves phase precipitation for high-temperature applications

AU - Risanti, D. D.

AU - Sauthoff, G.

N1 - Funding Information: The financial support by the Deutsche Forschungsgemeinschaft (DFG) is gratefully acknowledged. The authors would like to thank Mr M. Kulse, Mrs H. Bögerhausen, Mr U. Wellms and Mr G. Bialkowski for preparing the alloys, metallographic work, EPMA measurements, sample preparation and mechanical testing, respectively.

PY - 2005/12

Y1 - 2005/12

N2 - The ternary system Fe-Al-Ta allows the formation of the hard and brittle ternary Laves phase Ta(Fe0.5+x,Al0.5-x)2 with hexagonal C14 structure. The present study concentrates on Fe-Al-Ta alloys with small Ta contents between 2 and 6 at.% and various Al contents between 0 and 45 at.%. The phase equilibria in the ternary Fe-Al-Ta system at 1000°C are studied experimentally for determination of the solubility limits of Ta in iron aluminide matrices and types of phases and structures which may occur at high temperatures. It is observed that small amounts of Laves phase together with atomic ordering increase the yield stress and affect ductility in a complex way.

AB - The ternary system Fe-Al-Ta allows the formation of the hard and brittle ternary Laves phase Ta(Fe0.5+x,Al0.5-x)2 with hexagonal C14 structure. The present study concentrates on Fe-Al-Ta alloys with small Ta contents between 2 and 6 at.% and various Al contents between 0 and 45 at.%. The phase equilibria in the ternary Fe-Al-Ta system at 1000°C are studied experimentally for determination of the solubility limits of Ta in iron aluminide matrices and types of phases and structures which may occur at high temperatures. It is observed that small amounts of Laves phase together with atomic ordering increase the yield stress and affect ductility in a complex way.

KW - A. Iron aluminides (based on FeAl)

KW - B. Brittleness and ductility

KW - B. Mechanical properties at high temperatures

UR - http://www.scopus.com/inward/record.url?scp=22844441451&partnerID=8YFLogxK

U2 - 10.1016/j.intermet.2004.12.029

DO - 10.1016/j.intermet.2004.12.029

M3 - Article

AN - SCOPUS:22844441451

SN - 0966-9795

VL - 13

SP - 1313

EP - 1321

JO - Intermetallics

JF - Intermetallics

IS - 12

ER -

Strengthening of iron aluminide alloys by atomic ordering and Laves phase precipitation for high-temperature applications

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Keywords

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