Novel design concepts for gamma-base titanium aluminide alloys

Appel, F.; Oehring, Michael; Wagner, Richard

doi:10.1016/s0966-9795(00)00036-4

Cited by 355 publications

(221 citation statements)

References 66 publications

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“…1). These alloys are characterised by a high content of β-stabilizing alloying elements, such as Nb and Mo [6][7]. At room temperature strength levels > 1000 MPa can be achieved by appropriate thermomechanical processing.…”

Section: Introductionmentioning

confidence: 99%

Light-Weight Intermetallic Titanium Aluminides – Status of Research and Development

Clemens

Smarsly

2011

AMR

134

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Abstract. Development and processing of high-temperature materials is the key to technological progress in engineering areas where materials have to meet extreme requirements. Examples for such areas are the aerospace and automotive industries. New structural materials have to be stronger, stiffer and lighter to withstand the extremely demanding conditions in the next generation of aero-and automotive engines. Intermetallic γ-TiAl based alloys exhibit numerous attractive properties which meet these demands. These properties include high melting point, low density, high specific elastic modulus, good oxidation and burn resistance, and high specific strength up to application temperatures of 700 to 800°C. Thus, current γ-TiAl based alloys outperform advanced Ti-based alloys and have the potential to replace heavy Ni-based superalloys.

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Section: Introductionmentioning

confidence: 99%

Light-Weight Intermetallic Titanium Aluminides – Status of Research and Development

Clemens

Smarsly

2011

AMR

134

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“…There are numerous publications dealing with the plastic deformation and substructure of γ-TiAl-based alloys, and plastic deformation mechanisms in such alloys are quite well known (e.g. Appel & Wagner, 1998;Hu & Loretto, 1999;Appel et al, 2000;Fisher et al, 2003). However, most of these publications concern alloys melted by various arc techniques.…”

Section: Introductionmentioning

confidence: 99%

Scanning electron microscopy and transmission electron microscopy study of hot‐deformed γ‐TiAl‐based alloy microstructure

Chrapoński

Rodak

2006

Journal of Microscopy

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SummaryThe aim of this work was to assess the changes in the microstructure of hot-deformed specimens made of alloys containing 46-50 at.% Al, 2 at.% Cr and 2 at.% Nb (and alloying additions such as carbon and boron) with the aid of scanning electron microscopy and transmission electron microscopy techniques. After homogenization and heat treatment performed in order to make diverse lamellae thickness, the specimens were compressed at 1000 °C. Transmission electron microscopy examinations of specimens after the compression test revealed the presence of heavily deformed areas with a high density of dislocation. Deformation twins were also observed. Dynamically recrystallized grains were revealed. For alloys no. 2 and no. 3, the recovery and recrystallization processes were more extensive than for alloy no. 1.

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“…High melting point of aluminides and their ordered structure make the alloy brittle at ambient temperature [1,9,10]. The problem of poor ductility has been addressed to some extent by alloy design and processing.…”

Section: Processing Methods Of Aluminidesmentioning

confidence: 99%

Titanium Aluminides for Metallic Thermal Protection System of Reusable Space Transportation Vehicle: A Review

Gupta¹,

Ramkumar²

2015

FAE

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Gamma phase based two phase (+2) titanium aluminides have promising potential as high temperature structural materials particularly for aerospace systems due to light weight. They are potential candidate materials for metallic thermal protection system (MTPS) of reentry vehicles. Limitations with respect to processing have been reported due to poor formability below 700 0 C. However, different specialized techniques have been evolved to realize the material in various forms. The present paper brings out the candidature of this material (two phase +2, titanium aluminides) for MTPS and discusses the different processing options. Viable process route is also discussed to obtain thin sheets for MTPS.

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Novel design concepts for gamma-base titanium aluminide alloys

Cited by 355 publications

References 66 publications

Light-Weight Intermetallic Titanium Aluminides – Status of Research and Development

Light-Weight Intermetallic Titanium Aluminides – Status of Research and Development

Scanning electron microscopy and transmission electron microscopy study of hot‐deformed γ‐TiAl‐based alloy microstructure

Titanium Aluminides for Metallic Thermal Protection System of Reusable Space Transportation Vehicle: A Review

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