Combustion behavior and mechanism of Ti-25V-15Cr compared to Ti-6Al-4V alloy

Shao, Lei; Xie, Guoliang; Liu, Xinhua; Wu, Yuan; Tan, Qing; Xie, Lu; Xin, Shewei; Fang, Hao; Yu, Jiabin; Xue, Wenli; Feng, Kun

doi:10.1016/j.corsci.2021.109957

Cited by 15 publications

(7 citation statements)

References 26 publications

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“…In Figure 2 (b), the melting point of Ti-25V-15Cr alloy shown by the step enthalpy change and entropy change is about 1400 ℃ , about 300 ℃ lower than that of Ti-6Al-4V, which conforms to the low melting point of Ti-V-Cr flame retardant titanium alloy and accelerates heat dissipation to achieve flame retardant characteristics [28] . The difference of melting point between Ti-6Al-4V and Ti-25V-15Cr alloys is basically close to the difference of critical combustion temperature [9] . Figure 2.…”

Section: Verification Of Calculated Values From Jmatpro Programsupporting

confidence: 60%

“…If the thermal conductivity of the alloy is high, the heat conduction efficiency will be fast. Then the heat concentration is avoided when the local heat is heated, and the ignition probability [28] and the ignition temperature [9] are reduced.…”

Section: Analysis Of Thermodynamic Parametersmentioning

confidence: 99%

“…While under the same oxygen pressure, the ignition temperature of Ti-25V-15Cr alloy is much higher than Ti-6Al-4V, because the melting, decomposition and evaporation of V2O5 in the Ti-25V-15Cr alloy could absorb certain amount of heat. Which reduces the heat concentration effect of the specimen surface [9] .…”

Section: Introductionmentioning

confidence: 99%

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Influence of Alloying Elements Content on High Temperature Properties of Ti-V-Cr and Ti-Al-V Series Titanium Alloys: A JMatPro Program Calculation Study

Sun,

2023

J. Phys.: Conf. Ser.

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For the issues of high temperature performance affected by the alloying elements content in Ti-V-Cr and Ti-V-Cr alloys, the thermodynamic calculation method based on JMatPro program was applied in this study. The research is mainly focused on the analysis of phase composition, thermodynamic parameters and mechanical properties of Ti-Al-V and Ti-V-Cr series alloys with different element proportions under high temperature environment. Those obtained results show that the proportion of Al in Ti-Al-V alloys has a great influence on the high temperature properties. Increasing the content of Al not only increases the transformation temperature of β single-phase structure and delays the transformation process of α/β microstructure to β single-phase structure, but also helps to improve the high temperature thermal conductivity and elastic deformation resistance of the alloy. In Ti-V-Cr alloys, the influence of V element on high temperature properties is mainly focused on the improvement of thermal conductivity and high temperature deformation properties, while the influence of Cr element is relatively weak. Besides, adding a small amount of Al element to Ti-V-Cr alloy can further improve the thermal conductivity of the alloy. The Young’s modulus of the Ti-V-Cr alloy increases when 0.3%-1% of C element is added. Finally, the effect of Si element on the high temperature elastic deformation of the alloy is relatively weak.

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Section: Verification Of Calculated Values From Jmatpro Programsupporting

confidence: 60%

Section: Analysis Of Thermodynamic Parametersmentioning

confidence: 99%

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Influence of Alloying Elements Content on High Temperature Properties of Ti-V-Cr and Ti-Al-V Series Titanium Alloys: A JMatPro Program Calculation Study

Sun,

2023

J. Phys.: Conf. Ser.

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“…In addition to the typical α + β dual-phase titanium alloys, the combustions of the Ti-Cr-V and Ti-Cu alloys are also studied. The ignition temperatures of Ti40 (Ti25V-15Cr) are higher than those of TC4 due to the decomposition and volatilization of V 2 O 5 , but the combustion velocity of Ti-25V-15Cr is faster than that of TC4, attributed to the different migration way of the solid-liquid interface [18]. Studies have also reported that the burn resistance of titanium alloys is improved by the addition of Cu due to the reduction in heat generation and the improvement of heat transmission.…”

Section: Introductionmentioning

confidence: 99%

Combustion Behavior and Microstructure of TC17 Titanium Alloy under Oxygen-Enriched Atmosphere

Zhang,

Xing,

et al. 2023

Metals

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TC17 titanium alloy is widely used in the aerospace industry, but its combustion behavior and microstructure after combustion are rarely investigated. Herein, the ignition critical oxygen pressure, combustion velocity, and microstructure after the combustion of TC17 titanium alloy were investigated by promoted ignition combustion tests under an oxygen-enriched environment. The results indicated that there were three stages, ignition, splash, and flame propagation, for the combustion process of the TC17 alloy. As compared to TC11 titanium alloy, the TC17 titanium alloy exhibited a similar ignition critical oxygen pressure with the same size, but an obviously faster burning rate, which followed a power law relationship with the oxygen pressure. The segregation of Cr, Mo, and Al was observed in the interdendritic phase of the melting zone and the interface between the melting zone and the heat-affected zone. The segregation of Cr at the liquid/solid interface can be responsible for accelerating the burning kinetic of the TC17 alloy by decreasing the interfacial temperature.

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“…Ti alloys are widely applied in gas turbine aeroengines and hybrid-electric airplanes due to their low density and high specific strength [1][2][3][4][5]. In fuel-efficient innovations for aeroengines or hybrid-electric airplanes, Ti alloys have found applications in components exposed to relatively high temperature and chemically aggressive demanding environments, e.g.…”

Section: Introductionmentioning

confidence: 99%

An amorphous SiAlN barrier coating against NaCl attack in humid air at elevated temperature

et al. 2022

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Combustion behavior and mechanism of Ti-25V-15Cr compared to Ti-6Al-4V alloy

Cited by 15 publications

References 26 publications

Influence of Alloying Elements Content on High Temperature Properties of Ti-V-Cr and Ti-Al-V Series Titanium Alloys: A JMatPro Program Calculation Study

Influence of Alloying Elements Content on High Temperature Properties of Ti-V-Cr and Ti-Al-V Series Titanium Alloys: A JMatPro Program Calculation Study

Combustion Behavior and Microstructure of TC17 Titanium Alloy under Oxygen-Enriched Atmosphere

An amorphous SiAlN barrier coating against NaCl attack in humid air at elevated temperature

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