Flow stress anomaly and order–disorder transitions in Fe3Al-based Fe–Al–Ti–X alloys with X=V, Cr, Nb, or Mo

Stein, Frank; Schneider, A.; Frommeyer, G.

doi:10.1016/s0966-9795(02)00187-5

Cited by 114 publications

(72 citation statements)

References 43 publications

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“…The phase diagrams for binary iron aluminides were studied using different techniques, e.g., dilatometric measurement [30], electrical resistivity and specific heat measurement [31], measurement of elastic modulus and magnetic properties [32,33], X-ray diffraction methods [34]; and, more recently, the phase diagram was intensively studied with TEM [35]. The first well-accepted binary Fe-Al phase diagram was reported in 1982 [36].…”

Section: Phase Diagrammentioning

confidence: 99%

“…The reason for this uncertainty is the anomaly in the physical properties such as Young's modulus, thermal expansion and electrical resistance. Some possible explanations for the observed irregularities including other long-range ordered states, short-range ordering, two-phase structure, material impurities such as carbide precipitation and quenched-in vacancies are proposed [35,[37][38][39]. The different phases and their lattice structure and lattice parameters are listed in Table 1 [9,[40][41][42][43][44][45][46].…”

Section: Phase Diagrammentioning

confidence: 99%

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A Review on the Properties of Iron Aluminide Intermetallics

2016

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Iron aluminides have been among the most studied intermetallics since the 1930s, when their excellent oxidation resistance was first noticed. Their low cost of production, low density, high strength-to-weight ratios, good wear resistance, ease of fabrication and resistance to high temperature oxidation and sulfurization make them very attractive as a substitute for routine stainless steel in industrial applications. Furthermore, iron aluminides allow for the conservation of less accessible and expensive elements such as nickel and molybdenum. These advantages have led to the consideration of many applications, such as brake disks for windmills and trucks, filtration systems in refineries and fossil power plants, transfer rolls for hot-rolled steel strips, and ethylene crackers and air deflectors for burning high-sulfur coal. A wide application for iron aluminides in industry strictly depends on the fundamental understanding of the influence of (i) alloy composition; (ii) microstructure; and (iii) number (type) of defects on the thermo-mechanical properties. Additionally, environmental degradation of the alloys, consisting of hydrogen embrittlement, anodic or cathodic dissolution, localized corrosion and oxidation resistance, in different environments should be well known. Recently, some progress in the development of new micro-and nano-mechanical testing methods in addition to the fabrication techniques of micro-and nano-scaled samples has enabled scientists to resolve more clearly the effects of alloying elements, environmental items and crystal structure on the deformation behavior of alloys. In this paper, we will review the extensive work which has been done during the last decades to address each of the points mentioned above.

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Section: Phase Diagrammentioning

confidence: 99%

Section: Phase Diagrammentioning

confidence: 99%

A Review on the Properties of Iron Aluminide Intermetallics

2016

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“…In previous studies, [1][2][3][4][5][6][7][8][9][10][11] it is seen that the Ti addition in the Fe-Al binary alloys would (1) strongly increase the D0 3 !B2 and B2!A2 transition temperatures, [1][2][3][4][5][6][7][8][9][10] (2) significantly expand the (A2+D0 3 ) phase field, [5][6][7] and (3) cause the D0 3 APBs to exhibit a tendency toward anisotropy. 6) In addition, a (B2+L2 1 ) (L2 1 is the ternary equivalent of the binary D0 3 structure.…”

Section: Introductionmentioning

confidence: 99%

Phase Separation from L21 to (B2+L21) in Fe-24.6Al-7.5Ti Alloy

Tsay

Tuan

et al. 2010

Mater. Trans.

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As-quenched microstructure of the Fe-24.6 at% Al-7.5 at% Ti alloy was a mixture of (A2+L2 1 ) phases. When the as-quenched alloy was aged at 1173 K for moderate times, the L2 1 domains grew considerably and B2 phase was formed at a/2h100i anti-phase boundaries (APBs) as well as phase separation from well-grown L2 1 to (B2+L2 1 Ã ) occurred basically contiguous to the APBs, where L2 1 Ã is also a L2 1 -type phase. With continued aging at 1173 K, the phase separation would proceed toward the whole well-grown L2 1 domains. This microstructural evolution has not been reported in the Fe-Al-Ti alloy systems before.

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“…[1][2][3][4][5][6][7][8][9] Based on these studies, it can be generally concluded that the addition of Ti in the Fe-Al binary alloys would not only pronouncedly raise the A2+D0 3 (or D0 3 ) ! B2 !…”

Section: Introductionmentioning

confidence: 99%

“…A2 transition temperatures but also significantly expand the (A2+D0 3 ) phase field. [3][4][5][6][7][8][9] In addition, a (B2+D0 3 ) two-phase field was reported to be detected in the Fe-Al-Ti ternary alloys. [7][8][9] Interestingly, the (B2+D0 3 ) twophase field has not been found by previous workers in the FeAl binary alloys before.…”

Section: Introductionmentioning

confidence: 99%

Formation of (B2+D03) Two-Phase Microstructure in a Fe-23 Al-7 Ti Alloy

Chao

Liu

2007

Mater. Trans.

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As-quenched microstructure of the Fe-23 at% Al-7 at% Ti alloy was a mixture of (A2+D0 3 ) phases. When the as-quenched alloy was aged at 1073 K for moderate times, D0 3 domains grew preferentially along h100i directions and extremely fine B2 particles occurred at a/2h100i antiphase boundaries (APBs). After prolonged aging at 1073 K, the B2 particles would grow to occupy the whole a/2h100i APBs. Consequently, the stable microstructure of the alloy at 1073 K was a mixture of (B2+D0 3 ) phases.

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Flow stress anomaly and order–disorder transitions in Fe3Al-based Fe–Al–Ti–X alloys with X=V, Cr, Nb, or Mo

Cited by 114 publications

References 43 publications

A Review on the Properties of Iron Aluminide Intermetallics

A Review on the Properties of Iron Aluminide Intermetallics

Phase Separation from L2<SUB>1</SUB> to (B2+L2<SUB>1</SUB>) in Fe-24.6Al-7.5Ti Alloy

Formation of (B2+D0<SUB>3</SUB>) Two-Phase Microstructure in a Fe-23 Al-7 Ti Alloy

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