The effect of Zr addition on the structure and high temperature strength of Fe-30 at.% Al type alloys

被引：25

作者：

Kratochvil, Petr ^{[1
]}

Kejzlar, Pavel ^{[2
]}

Kral, Robert ^{[1
]}

Vodickova, Vera ^{[2
]}

机构：

[1] Charles Univ Prague, Fac Math & Phys, Dept Met Phys, CZ-12116 Prague 2, Czech Republic

[2] Tech Univ Liberec, Fac Mech Engn, Dept Mat Sci, Liberec 46001, Czech Republic

来源：

INTERMETALLICS | 2012年 / 20卷 / 01期

关键词：

Iron aluminides based on Fe3Al; Mechanical properties at high temperature; CONTAINING LAVES PHASES; MECHANICAL-PROPERTIES; PLASTIC-DEFORMATION; FE3AL-BASED ALLOYS; PART II;

D O I：

10.1016/j.intermet.2011.08.007

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The structure of four Fe-30Al alloys with different contents of Zr has been studied. Light optical microscopy (LOM), scanning electron microscopy (SEM) with EDX module, measurement of microhardness as well as X-ray diffraction (XRD) was used to determine the structure and phase composition. Addition of Zr to Fe-30Al leads, in the cast state, to the formation of a Fe-Al matrix with a hard lamellar eutectic skeleton. The eutectic is composed of thin lamellae of lambda(1)-Laves phase Zr(Fe,Al)(2) and Fe-Al (B2/D0(3)). Annealing at 1000 degrees C for 200 h results in the formation of the equilibrium phase tau(1) Zr(Fe,Al)(12). The presence of these phases in the matrix leads to increase of high temperature yield stress and strength. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：39 / 46

页数：8

共 15 条

[1] Carbide formation in zr-containing Fe3Al-based alloys
Cieslar, Miroslav
Karlik, Miroslav
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2007, 462 (1-2): : 289 - 293
[2] High-temperature mechanical properties of Zr alloyed Fe3Al-type iron aluminide
Kratochvil, P.
Malek, P.
Cieslar, M.
Hanus, P.
Hakl, J.
Vlasak, T.
[J]. INTERMETALLICS, 2007, 15 (03) : 333 - 337
[3] Ordered intermetallic alloys: an assessment
Liu, CT
Stringer, J
Mundy, JN
Horton, LL
Angelini, P
[J]. INTERMETALLICS, 1997, 5 (08) : 579 - 596
[4] A REVIEW OF RECENT DEVELOPMENTS IN FE3AL-BASED ALLOYS
MCKAMEY, CG
DEVAN, JH
TORTORELLI, PF
SIKKA, VK
[J]. JOURNAL OF MATERIALS RESEARCH, 1991, 6 (08) : 1779 - 1805
[5] New iron-aluminium alloy with thermally stable coherent intermetallic nanoprecipitates for enhanced high-temperature creep strength
Morris, D. G.
Munoz-Morris, M. A.
Requejo, L. M.
[J]. ACTA MATERIALIA, 2006, 54 (09) : 2335 - 2341
[6] Possibilities for high-temperature strengthening in iron aluminides
Morris, DG
[J]. INTERMETALLICS, 1998, 6 (7-8) : 753 - 758
[7] Concepts derived from phase diagram studies for the strengthening of Fe-Al-based alloys
Palm, M
[J]. INTERMETALLICS, 2005, 13 (12) : 1286 - 1295
[8] Al-Fe-Zr (Aluminum-Iron-Zirconium)
Raghavan, V.
[J]. JOURNAL OF PHASE EQUILIBRIA AND DIFFUSION, 2010, 31 (05) : 459 - 462
[9] Thermodynamic assessment of the Fe-Al-Zr phase diagram
Rigaud, Vincent
Sundman, Bo
Daloz, Dominique
Lesoult, Gerard
[J]. CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY, 2009, 33 (03): : 442 - 449
[10] Phases and phase equilibria in the Fe-Al-Zrsystem
Stein, E
Sauthoff, G
Palm, M
[J]. ZEITSCHRIFT FUR METALLKUNDE, 2004, 95 (06): : 469 - 485

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