Effect of coatings on oxidation of Ti-6Al-2Sn-4Zr-2Mo foil

Clark, R. K.; Unnam, J.; Widemann, K. E.

doi:10.1007/bf00666729

Cited by 26 publications

(5 citation statements)

References 3 publications

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“…Application of protective coatings on the titanium alloy results in significant improvement not only in elimination of alpha case more effectively, but also the prevention of oxide scale formation [3][4][5][6][7]. Many researchers employed a variety of surface modification techniques [8][9][10][11][12][13][14][15][16][17][18][19] as a method to limit oxygen ingress into the titanium alloys. But, these methods are not much effective when compared to the recently developed coatings by employing combined surface engineering techniques [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

An oxidation model for predicting the life of titanium alloy components in gas turbine engines

Gurrappa

2005

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 99%

An oxidation model for predicting the life of titanium alloy components in gas turbine engines

Gurrappa

2005

Journal of Alloys and Compounds

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“…And the coated samples were polished with 600# sand papers, and then applied a thermal treatment process. During this treatment, the samples were heat treated at 550°C in vacuum for ~0.5h and then 800-820°C for ~5h after the filling of purified argon reached the pressure of ~1.5×10 5 Pa. The pressure did not change until the treated samples were cooled slowly to room temperature.…”

Section: Methodsmentioning

confidence: 99%

“…Titanium alloys and titanium-aluminides are potential lightweight materials in aerospace and automobile industries. [1][2][3]Although they are supposed to have higher service temperature, Ti-and TiAl-alloys are limited to work reliably at maximum temperature of about 600°C [4]and 700°C [3] in air, respectively, due to the surface oxidation and near-surface embrittlement [5][6][7]. Surface modification and coating technologies are used to protect Ti-and TiAl-alloys in past ~30 years depending on the formation of an outside continuous oxide scale such as alumina [8,9].…”

Section: Introductionmentioning

confidence: 99%

<i>In Situ</i> Synthesis and Oxidation Behavior of Ti-Al-Ag Ternary Coatings

Yang

Liu

et al. 2016

MSF

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Mixture powders with different ratio of Ag/γ-TiAl were deposited on titanium alloy by low presure plasma spray and thermal treatment was applied to convert the mixture coatings into Ti-Al-Ag ternary ones. The experimental results indicated that the oxidation resistance of ternary coatings was better than sheer γ-TiAl coating and increased with increasing Ag from 2at.% to 4at.% at 700 and 800°C. The outside oxide scale consisted of alumina and a small amount of rutile due to the insufficient diffusion of Ag in γ-TiAl.

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“…Molybdenum was selected because it is an important element in high-temperature Ti alloys, such as b-21S (a b alloy) and Ti6242 (an a + b alloy). 31,[35][36][37][38][39] This approach allows for a systematic assessment of the influence of composition on the oxidation resistance of the binary titanium alloys independent of experimental variability. The materials were b-solutionized in argon, quenched, and polished prior to being subjected to the oxidation tests.…”

Section: Methodologiesmentioning

confidence: 99%

Discovery via Integration of Experimentation and Modeling: Three Examples for Titanium Alloys

Liu

Samimi

Ghamarian

et al. 2014

JOM

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One key aspect of any integrated computational materials engineering approach is the integration of experiments that provide critical information for the modeling activities. This article describes, using case studies, three examples of critical experiments that have been conducted in an integrated fashion with modeling activities for titanium alloys, providing valuable information in an accelerated manner. The first has been used to identify key microstructural features associated with fracture toughness in Ti-6Al-4V and integrates artificial neural networks and various experimental techniques. The second is associated with defect accumulation in highly constrained titanium structures and integrates a highly innovative characterization technique (precession electron diffraction) and dislocation dynamics. The third is a high-throughput combinatorial technique to understand the oxidation behavior of titanium alloys and couples the experimental effort with the CALPHAD approach. INTRODUCTIONThe composition, microstructure, and defect structures of advanced nonferrous structural alloys are the predominant factors that govern the response of the material to an externally applied stimulus. For example, there will be an elasticplastic response of the material to an externally applied load. Similarly, there will be a compositional and structural evolution in response to thermal excursions. Although these responses are expected to occur, the precise details of the responses are less well understood. integrated computational materials engineering (ICME), or integrated computational materials science and engineering (ICMSE), is a strategy to integrate knowledge, represented by both computation/simulation and high-fidelity experimental databases, from across the composition-microstructure-processing-property paradigm so as to engineer a solution to a design problem. ICME strategies are increasingly being put into service and adding value. 1-4 However, to be effective the individual components must accurately describe materials phenomena.For many structural materials, the precise details of materials response to external stimuli are not well understood. Often, an integrated experimental and computational approach can help elucidate these missing details. While not representing a complete ICME program, each of these integrated activities has provided knowledge that was otherwise lacking. Each of these programs is related to a different problem facing a particular class of nonferrous structural alloys-titanium-based alloys. These include efforts to understand the following: the influence of microstructure on the fracture toughness of a + b-processed Ti-6Al-4V, the influence of defect populations on performance of single-phase and two-phase titanium alloys, and the role of composition on the oxidation behavior of several titanium alloys. The motivation and details of each problem are described separately, as are the conclusions. It is seen that the integration of critical and careful experiments with various modeling schemes ca...

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Effect of coatings on oxidation of Ti-6Al-2Sn-4Zr-2Mo foil

Cited by 26 publications

References 3 publications

An oxidation model for predicting the life of titanium alloy components in gas turbine engines

An oxidation model for predicting the life of titanium alloy components in gas turbine engines

<i>In Situ</i> Synthesis and Oxidation Behavior of Ti-Al-Ag Ternary Coatings

Discovery via Integration of Experimentation and Modeling: Three Examples for Titanium Alloys

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