Phase equilibrium and martensitic transformation in near equiatomic Ti Pd alloys

Yamamuro, Takateru; Morizono, Yasuhiro; Honjyo, J.; Nishida, Minoru

doi:10.1016/j.msea.2006.01.120

Cited by 17 publications

(10 citation statements)

References 5 publications

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“…The assumption [9] that there is a second-order phase transition in the Ti-Pd system between β-Ti and TiPd at subsolidus temperatures has not been confirmed. We assume that this transition occurs at temperatures somewhat lower than subsolidus, especially because the study [9] was conducted at 1000°C, which is 300°C lower than the solidus temperature (1310°C).…”

Section: Resultsmentioning

confidence: 99%

“…We assume that this transition occurs at temperatures somewhat lower than subsolidus, especially because the study [9] was conducted at 1000°C, which is 300°C lower than the solidus temperature (1310°C). Hence, we believe that there is a two-phase region at subsolidus temperatures, possibly in a very narrow temperature and composition range.…”

Section: Resultsmentioning

confidence: 99%

“…[8], there are a TiPd equiatomic phase (1400°C), whose high-temperature modification is isostructural to the above-mentioned AlPd phase, and a solid solution based on β-Ti (1310°C) with a narrow twophase region between them up to 50 at.% Pd in the Ti-Pd system at subsolidus temperatures. The more recent paper [9] employing the method of diffusion couples at 1000°C assumes a second-order A2/B2 transformation instead of the two-phase region between the phases.…”

Section: Introductionmentioning

confidence: 99%

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Solidus surface of the Al–Ti–Pd system in the Al–AlPd–TiPd–Ti region

Zaikina

Khoruzha

Korniyenko

et al. 2011

Powder Metall Met Ceram

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The Al-Ti-Pd system has been studied by microstructural analysis, electron microprobe analysis, xray diffraction, and differential temperature analysis in the composition range 0-50 at.% Pd (AlAlPd-TiPd-Ti partial system) at subsolidus temperatures. The solidus surface of the system is constructed for the first time. At subsolidus temperatures, there are two ternary compounds, τ 1 (Al 61 Ti 26 Pd 13 , AuCu 3 type) and τ 3 (Al 44 Ti 35 Pd 21 , MgZn 2 type), a continuous solid solution (β 0 phase) between isostructural (CsCl type) high-temperature modifications of AlPd and TiPd equiatomic phases, and terminal solid solutions based on β-Ti and α-Ti and TiAl, Ti 2 Al 5 , TiAl 3 , and Al 3 Pd 2 binary compounds and ε phase. The above-mentioned phases participate in 11 four-phase invariant equilibria involving the liquid phase and are represented by isothermal tie-line triangles in the temperature range between 630 and 1205°C.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Solidus surface of the Al–Ti–Pd system in the Al–AlPd–TiPd–Ti region

Zaikina

Khoruzha

Korniyenko

et al. 2011

Powder Metall Met Ceram

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“…The literature data are given with the corresponding references. (8) 0.82438 (9) Al45.0Ti32.3Pd22.7 0.51454 (9) 0.82446 (10) Al43.5Ti34.1Pd22. 4 3 P63/mcm Nb(Ir,Al)2 0.89198 (3) 0.82040(4) Al41.0Ti34.5Pt24.5 [3] 0.89098 (11) 0.82011 (7) Al44.1Ti29.9Pd26.0 contains the so-called -phases stable below 792 • C [4], and the ␥-and -phases formed by solid-state reactions at still lower temperatures.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Al–Ti–Pd alloy system at 930 and 1100°C

Zaikina

Khorujaya

Pavlyuchkov

et al. 2011

Journal of Alloys and Compounds

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“…5) However, there is still a lack of sufficient information about the phase equilibrium in nearequiatomic Ti-Pd alloy, especially in the high temperature region above 1273 K. We therefore investigated specimens quenched above 1273 K to obtain the microstructural aspects at high temperatures. As a result of microstructural observations at room temperature, we fortuitously discovered a martensitic phase with a long period stacking structure in near-equiatomic Ti-Pd alloys quenched at temperatures above 1373 K. The martensite with a long period stacking structure in the Ti-Pd binary system has not been reported so far.…”

Section: Introductionmentioning

confidence: 99%

Morphology and Crystallography of Martensite Plate with Long Period Stacking Structure in Ti-Pd Shape Memory Alloy

2011

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The morphology and crystallography of martensite plates with a long period stacking structure in Ti-Pd shape memory alloy were investigated by transmission electron microscopy. In addition to B19 (2H) martensite, an 18Rð2 1 1Þ 6 structure was observed in equiatomic Ti-Pd alloy quenched above 1373 K. Three fundamental plate variant combinations were identified in the plate group in the region consisting exclusively of 18R martensite. These were designated A : B, A : C and A : D types, and their morphologies and crystallographic characteristics are a wedge with type II, a spear with type I and a fork with compound twin relations, respectively. Duplex martensitic phases coexisting in the same area, namely, ''two-in-one'' structures, were also observed.

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Phase equilibrium and martensitic transformation in near equiatomic Ti Pd alloys

Cited by 17 publications

References 5 publications

Solidus surface of the Al–Ti–Pd system in the Al–AlPd–TiPd–Ti region

Solidus surface of the Al–Ti–Pd system in the Al–AlPd–TiPd–Ti region

Investigation of the Al–Ti–Pd alloy system at 930 and 1100°C

Morphology and Crystallography of Martensite Plate with Long Period Stacking Structure in Ti-Pd Shape Memory Alloy

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