Very long term oxidation of Ti-48Al-2Cr-2Nb at 704 ° C in air

Locci, Ivan E.; Brady, Michael P.; MacKay, Rebecca A.; Smith, James W.

doi:10.1016/s1359-6462(97)00178-4

Cited by 21 publications

(11 citation statements)

References 7 publications

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“…The scale gets layered with an outer TiO 2 layer and an inner layer made of TiO 2 and Al 2 O 3 . The same scale structure was found by Locci et al [8] after long-term (6000 and 9000 h) oxidation of Ti-48Al-2Cr-2Nb at 704 C in air. They also reported the presence of a continuous TiN layer at the metal/scale interface already formed after 1000 h of oxidation.…”

Section: Introductionsupporting

confidence: 84%

Structural characterization of the scale formed on a Ti–46Al–8Nb alloy oxidised in air at 700°C

et al. 2010

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Section: Introductionsupporting

confidence: 84%

Structural characterization of the scale formed on a Ti–46Al–8Nb alloy oxidised in air at 700°C

et al. 2010

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“…The first layer, next to the metal is very rich in Al; microprobe analyses indicate that this rich phase has chemistry close to TiAl 2 ; the second layer is rich in Ti and N and Al. An Al-enriched zone below the scale has also been reported for Nb and Mo-containing alloys [5,20]. A Microprobe linescan that reflects the changes in chemistry for the multiple layers that formed at the metal/scale sub-surface is included in Fig.…”

Section: Oxidation At 704°c -7000 H -In Airmentioning

confidence: 65%

“…Ti48Al-2Cr-2Nb --Detailed description of the scale formed in this system has been reported earlier [5,6]. Typically, the scale consisted of an outer layer of TiO 2 and an inner intermixed layer of Al 2 O 3 /TiO 2 .…”

Section: Oxidation At 704°c -7000 H -In Airmentioning

confidence: 93%

“…TiAl alloys are being investigated for low-pressure turbine (LPT) blade applications, exhaust nozzle components and compressor cases in advanced subsonic and supersonic engines [1][2], and exhaust valves in automobiles [2][3][4]. Significant progress has been made in understanding the fundamental aspects of the oxidation behavior of binary TiAl alloys [5][6][7][8][9][10][11][12]. However, most of this work has concentrated on shorter term (< 1000 hours), higher temperature (900°C-1000°C) exposures.…”

Section: Introductionmentioning

confidence: 99%

“…However, most of this work has concentrated on shorter term (< 1000 hours), higher temperature (900°C-1000°C) exposures. Much less data is available in the literature regarding the oxidation behavior of the quaternary and higher order engineering alloys under the long term, low temperature conditions likely to be encountered in near term structural applications [5][6]11,13]. The present investigation was undertaken to characterize the long-term oxidation behavior of various model and advanced engineering titanium aluminides at 704°C in air.…”

Section: Introductionmentioning

confidence: 99%

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Long Term Oxidation of Model and Engineering TiAl Alloys

2000

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The purpose of this research was to characterize the oxidation behavior of several model (TiAl, TiAl-Nb, TiAl-Cr, TiAl-Cr-Nb) and engineering alloys (XD, K5, Alloy 7, WMS) after long-term isothermal exposure (~7000 h) at 704°C, and after shorter time exposure (~1000 h) at 800°C in air. High-resolution field emission and microprobe scanning electron microscopy were used to characterize the scales formed on these alloys. Similarities and differences observed in the scales are correlated with the various ternary and quaternary microalloying additions.

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High‐Temperature Oxidation and Corrosion of Intermetallics

Brady

Pint

Tortorelli

et al. 2013

Materials Science and Technology

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The sections in this article are Introduction Oxidation Fundamentals Protective Oxide Scale Formation Reactive Elements Overview Effects on Oxidation Production of Alloys with RE Additions Applicability and Limitations Pesting Ni  Al Based Intermetallics Overview Ni Al Transient Oxidation Steady‐State Oxidation Effect of Al Content Alloying Additions Other Corrosive Environments Ni 3 Al Transient Oxidation Steady‐State Oxidation Alloying Effects Fe  Al Based Intermetallics Overview Historical Perspective Thermodynamic and Kinetic Considerations in the Fe  Al  O System Fe 3 Al Fe Al Other Corrosive Environments Sulfur‐Containing Gases Chlorine‐Containing Gases Carbon‐Containing Gases Molten Salts and Condensed Deposits Ti  Al Based Intermetallics Overview Ti Al 2 Ti Al 3 τ Phase γ‐ Ti Al Thermodynamic Considerations The Nitrogen Effect Effects of Alloying Additions Engineering Considerations Other Corrosive Environments α 2 ‐ Ti 3 Al and Orthorhombic Ti 2 Al Nb α 2 Alloys Orthorhombic Alloys Nb  Al Based Intermetallics Overview Nb Al 3 Nb 2 Al Nb 3 Al Nb  Ti  Al Precious Metal, Exotic, and Miscellaneous Aluminides Pt  Al Intermetallics Ir  Al Intermetallics Ru  Al Intermetallics Co  Al Intermetallics V  Al Intermetallics Laves Phases and In‐Situ Composites Overview Single‐Phase Laves Alloys Nb  Nb Cr 2 In‐Situ Composites Cr XCr 2 Type In‐Situ Composites Ni Al ‐Based In‐Situ Composites γ‐ Ti Al + Ti ( Cr , Al ) 2 and Nb Al 3 + Nb ( Cr , Al ) 2 In‐Situ Composites Silicides Overview and General Considerations Mo Si 2 Overview High‐Temperature Oxidation Accelerated Oxidation and Pesting Effects of Alloying Additions Composites Other Corrosive Environments Mo 5 Si 3 Ti Si 2 and Ti 5 Si 3 Ti Si 2 Ti 5 Si 3 V 5 Si 3 Cr 3 Si Fe and Ni Silicides Other Silicides Beryllides Overview Complex Beryllides– MBe 13 , MBe 12 , and M 2 Be 17 MBe 2 MBe Phases Acknowledgements

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Very long term oxidation of Ti-48Al-2Cr-2Nb at 704 ° C in air

Cited by 21 publications

References 7 publications

Structural characterization of the scale formed on a Ti–46Al–8Nb alloy oxidised in air at 700°C

Structural characterization of the scale formed on a Ti–46Al–8Nb alloy oxidised in air at 700°C

Long Term Oxidation of Model and Engineering TiAl Alloys

High‐Temperature Oxidation and Corrosion of Intermetallics

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