Cyclic oxidation behavior of plasma surface chromising coating on titanium alloy Ti–6Al–4V

Wei, Dongbo; Zhang, Pingze; Yao, Zhengjun; Zhou, Jintang; Wei, Xiaojun; Zhou, Peng

doi:10.1016/j.apsusc.2012.08.102

Cited by 44 publications

(16 citation statements)

References 29 publications

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“…The α phase is predominant than β phase, however, the hcp crystal structured α -Ti phase with low ideal axial ratio (c/a) causes poor wear properties and leads to deformation of blades after long operating hours [4]. The tribological properties can be improved with different techniques such as electrophoretic deposition [5], plasma surface chromising coating [6], plasma deposition [7], TIG cladding [8], plasma immersion ion implantation [9] and laser cladding [10,11]. Despite these techniques, the refurbishment of the aero engine blades remains a pertinent problem.…”

Section: Introductionmentioning

confidence: 98%

Microstructural and mechanical characterization of Ti6Al4V refurbished parts obtained by laser metal deposition

Raju

Duraiselvam

Petley

et al. 2015

Materials Science and Engineering: A

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Section: Introductionmentioning

confidence: 98%

Microstructural and mechanical characterization of Ti6Al4V refurbished parts obtained by laser metal deposition

Raju

Duraiselvam

Petley

et al. 2015

Materials Science and Engineering: A

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“…Several attempts were made to develop suitable oxidation-resistant coating for titanium alloys. Chemical treatments are the most used for oxidation protection with pack cementation coatings [5,6], ion implantation [7,8], PVD ceramic coatings [9,10]. Mechanical treatments are generally rather used to improve the tribological and mechanical surface properties [11].…”

Section: Introductionmentioning

confidence: 99%

Influence of Mechanical Surface Treatment on High-Temperature Oxidation of Pure Titanium

et al. 2017

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International audienceThe excellent combination of light-weight and good mechanical propertiesmakes titanium alloys attractive for compressor section components in gasturbine engines (temperature between 250 and 600 C). However, above 600 C,the formation of an unprotective oxide layer facilitates the oxygen diffusion into thealloy. In this experimental study, pure titanium was treated with mechanical surfacetreatment to promote better protection against oxidation at high temperature. Shotpeenedand laser-shock peened specimens were compared to untreated samples interms of oxidation behavior at high temperature. We used thermal gravimetricanalysis to oxidize the samples at 700 C for 100 h. Subsequently, XRD, opticalmicroscopy, SEM/EDS, NRA, micro-Raman spectroscopy, and micro-hardnesswere used to characterize the oxide scale and the alpha-case layer formed during thehigh-temperature exposure. The shot-peened samples oxidized less (-45%) than theuntreated and laser-shock peened samples. This behavior was attributed to theformation of a continuous nitride layer between oxide and meta

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“…The high temperature oxidation resistance of alloys is well known to be strongly affected by their top surface microstructures [22,23] . Combining with the above analysis, to improve In718 superalloy's cyclic oxidation resistance, we need to accelerate the reaction of Cr, Ti.…”

Section: Discussion Of the Mechanismmentioning

confidence: 99%

Cyclic oxidation resistance of In718 superalloy treated by laser peening

Bai

Hua

Rong

et al. 2015

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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The aim of this study was to improve the cyclic oxidation resistance of In718 superalloy by laser peening(LP). Specimens were treated by LP from one to three times, respectively. The cyclic oxidation tests at 900 ℃ for periods up to 2 h were conducted. Changes of the top surface morphology and microstructure were analyzed by scanning electron microscope (SEM), energy-dispersive spectra (EDS), transmission electron microscope (TEM) and X-ray diffraction technique (XRD), respectively. The weights were measured between the oxidation cycles to assess the oxidation of the specimens. The top surface microstructure after LP was characterized by highly tangled and dense dislocation arrangements and a high amount of twins. Protective oxidation layer was generated more quickly on the surface treated by LP. The average oxidation rate was about 50 % lower. A tiny homogeneous oxidation layer containing (Fe,Cr) 2 O 3 , NiCrO 3 and Ni(Al,Cr) 2 O 4 spinel was generated on the surface. The experimental results of cyclic oxidation tests show that specimens treated by LP have a better high temperature oxidation resistance, and the antistrip performance of the oxidation layer improves. Moreover, the effects of LP are strengthened with the increase of laser peening.

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Cyclic oxidation behavior of plasma surface chromising coating on titanium alloy Ti–6Al–4V

Cited by 44 publications

References 29 publications

Microstructural and mechanical characterization of Ti6Al4V refurbished parts obtained by laser metal deposition

Microstructural and mechanical characterization of Ti6Al4V refurbished parts obtained by laser metal deposition

Influence of Mechanical Surface Treatment on High-Temperature Oxidation of Pure Titanium

Cyclic oxidation resistance of In718 superalloy treated by laser peening

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