Surface plasma chromized burn-resistant titanium alloy

Zhang, Pingze; Xu, Zhong; Zhang, Gaohui; He, Z. Y.

doi:10.1016/j.surfcoat.2006.07.078

Cited by 27 publications

(12 citation statements)

References 10 publications

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“…Simultaneously, surface treatment technologies (STTs) exhibit some promise to inhibit ''titanium fire'' of the common titanium alloys. As previously reported, the coatings of Ti-X (X = Al, Cu, Cr) and Ti-Y (Y = Cr-Mo/Cu/Ni, Pt/Cu/Ni, Cr-Mo/Ni, Cr-Mo/Al-Mn and Cr-TiC) show a certain degree of flame-retardant properties ( Ref 2,3,6,11,12). However, the practical systems of flame-resistant coating technologies of titanium alloys for aviation are not yet developed ( Ref 11).…”

Section: Introductionsupporting

confidence: 54%

Impact of CrSiTi and NiSi on the Thermodynamics, Microstructure, and Properties of AlCoCuFe-Based High-Entropy Alloys

Wang

Lin

et al. 2016

J. of Materi Eng and Perform

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Aiming to solve the problem of spontaneous combustion on titanium via electrospark deposition (ESD), two AlCoCuFe-based high-entropy alloys (HEAs), AlCoCuFe-x (x = CrSiTi, NiSi), were produced by vacuum arc melting as electrodes in ESD process. The thermodynamic analysis of AlCoCuFe-based HEAs were carried out using the concept of mixing enthalpy matrix and a powerful thermodynamic calculation toolbox (HEA-Thermo-Calcu). The microstructure and mechanical properties of the two alloys were investigated. The AlCoCuFeCrSiTi alloy contains a body-centered cubic (BCC) phase and a face-centered cubic (FCC) phase. The AlCoCuFeNiSi alloy is composed of two BCC phases and an FCC phase. Addition of CrSiTi and NiSi to AlCoCuFe-based alloys makes the enthalpy of mixing to be sizably more negative than for the other AlCoCuFe-based HEAs. Notwithstanding the fact that the thermodynamic parameters do not agree with YangÕs proposition, the two alloys form simple solid solutions. The electronegativity difference (Dv) favors a formation of the solid solution when Dv £ 14.2. The hardness of AlCoCuFe-x (x = CrSiTi, NiSi) alloys reaches 935 HV and 688 HV, respectively. The yield strength, fracture strength, and ultimate strain of AlCoCuFeNiSi are larger, i.e., 29, 30, and 45%, respectively, than those of the AlCoCuFeCrSiTi alloy.

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Section: Introductionsupporting

confidence: 54%

Impact of CrSiTi and NiSi on the Thermodynamics, Microstructure, and Properties of AlCoCuFe-Based High-Entropy Alloys

Wang

Lin

et al. 2016

J. of Materi Eng and Perform

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“…To avoid this problem, many scientists and engineers are currently developing burn-resistant titanium alloys to satisfy the requirements for high-propulsion-ratio engines. Several companies in Russia, USA, and China have been engaged in research on burn-resistant titanium alloys since the early 1990s, and several types of titanium alloys have been developed, such as Alloy C (Ti-35V-15Cr), 0BTT-1 (Ti-13Cu-4Al-4Mo-2Zr), BTT-3 (Ti18Cu-2Al-2Mo) [4][5], Ti40 (Ti-25V-15Cr-0.2Si) [6], and Ti14 (Ti-1Al-13Cu-0.2Si) [7]. Ti40 and Ti14 alloys have been independently researched and developed in China.…”

Section: Introductionmentioning

confidence: 99%

Burn-resistant behavior and mechanism of Ti14 alloy

Chen

Huo

Song

et al. 2016

Int J Miner Metall Mater

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The direct-current simulation burning method was used to investigate the burn-resistant behavior of Ti14 titanium alloy. The results show that Ti14 alloy exhibits a better burn resistance than TC4 alloy (Ti-6Al-4V). Cu is observed to preferentially migrate to the surface of Ti14 alloy during the burning reaction, and the burned product contains Cu, Cu 2 O, and TiO 2 . An oxide layer mainly comprising loose TiO 2 is observed beneath the burned product. Meanwhile, Ti 2 Cu precipitates at grain boundaries near the interface of the oxide layer, preventing the contact between O 2 and Ti and forming a rapid diffusion layer near the matrix interface. Consequently, a multiple-layer structure with a Cu-enriched layer (burned product)/Cu-lean layer (oxide layer)/Cu-enriched layer (rapid diffusion layer) configuration is formed in the burn heat-affected zone of Ti14 alloy; this multiple-layer structure is beneficial for preventing O 2 diffusion. Furthermore, although Al can migrate to form Al 2 O 3 on the surface of TC4 alloy, the burn-resistant ability of TC4 is unimproved because the Al 2 O 3 is discontinuous and not present in sufficient quantity.

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“…In this paper, we report a double-glow plasma surface alloying technology as a new method to deposit protective coatings on a TiAl substrate. This technology can effectively improve hardness, wear, and oxidation resistance [17][18][19] of the underlying substrate. It also allows the coating to be metallurgically bonded to the substrates without an obvious interface.…”

Section: Introductionmentioning

confidence: 99%

Isothermal Oxidation Behavior of Zr-Y Coating on γ-TiAl by Double Glow Plasma Surface Metal Alloying Technique

et al. 2018

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Oxidation resistance of Zr-Y coating on γ-TiAl alloy prepared by a double-glow plasma surface alloying technique was investigated in static air at 750 °C, 800 °C and 850 °C for 100 h. A pure Zr coating was also prepared for comparison. Addition of Y improved high-temperature oxidation resistance of the alloying coating because of its refining effect and inhibition of cationic diffusion. Oxidation kinetic curves indicated that the high-temperature oxidation resistance of the Zr-Y coating was about eight times higher than that of the bare substrate and about 3 times higher than that of pure Zr coating.

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Surface plasma chromized burn-resistant titanium alloy

Cited by 27 publications

References 10 publications

Impact of CrSiTi and NiSi on the Thermodynamics, Microstructure, and Properties of AlCoCuFe-Based High-Entropy Alloys

Impact of CrSiTi and NiSi on the Thermodynamics, Microstructure, and Properties of AlCoCuFe-Based High-Entropy Alloys

Burn-resistant behavior and mechanism of Ti14 alloy

Isothermal Oxidation Behavior of Zr-Y Coating on γ-TiAl by Double Glow Plasma Surface Metal Alloying Technique

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