Internal friction and heat resistance of Al, Al–Ce, Al–Ce–Zr and Al–Ce–(Sc)–(Y) aluminum alloys with high strength and high electrical conductivity

Wang, Weiyi; Pan, Qing‐Jiang; Li, Geng; Yu, Yi; Wang, Xiangdong; Liu, Yaru; Sun, Yuqiao; Ye, Ji; Huang, Zaiwang; Xiang, Song; Jiang, Feihong; Jun, Li; Liu, Bing

doi:10.1016/j.jmrt.2021.07.054

Cited by 19 publications

(2 citation statements)

References 65 publications

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“…Aluminum silicate ceramic fiber [17], polycrystalline mullite fiber [18], and quartz fiber [19] are selected as the inner layer of thermal insulation materials of thermal seals. These three materials have excellent heat resistance characteristics and low thermal conductivity, with better thermal insulation effects.…”

Section: Materials Propertiesmentioning

confidence: 99%

Thermal insulation characteristics of high-temperature heat seals for hypersonic aero-engines

Li,

Cai,

et al. 2023

J. Phys.: Conf. Ser.

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The high-temperature baseline sealing thermal protection technology is of great significance to realizing hypersonic aero-engines and aircraft. Based on the fact that there are few studies on the high-temperature baseline heat sealing in the ultra-high temperature environment (above 1000 °C), the paper establishes a simulation model to analyze the influence of different characteristic parameters on the thermal protection performance of the heat seal at ultra-high temperature and carried out experiments. Verification, simulation, and experiment error are less than 6%. The research results show that the aluminum silicate fiber has the best thermal insulation effect in the material of the inner thermal insulation layer, and the temperature can be lowered by more than 900 °C under an environment of 1200 °C. It is used to prepare heat seals. In addition, the filling density and thickness of the inner thermal insulation layer have little influence on the thermal insulation effect, and the influence coefficient does not exceed 5%. In the test of the degree of degradation of the thermal insulation performance of the heat seal, it is found that it does not exceed 5%, which meets the requirements for use. This paper further promotes the development of high-temperature thermal protection technology. It can also provide a corresponding technical basis for developing supersonic aero-engines.

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Section: Materials Propertiesmentioning

confidence: 99%

Thermal insulation characteristics of high-temperature heat seals for hypersonic aero-engines

Li,

Cai,

et al. 2023

J. Phys.: Conf. Ser.

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“…Their use has been increasing for decades due to their low density and outstanding specific strength and modulus [1]. One of the main disadvantages of conventional aluminium alloys is their relatively low heat resistance, since most alloys lose their strength when heated above 250 • C [2]. We developed Al-Mn-Cu-X alloys, which are experimental precipitation-hardened aluminium alloys.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Properties after Friction Stir Processing of Twin-Roll Cast Al–Mn–Cu–Be Alloy

et al. 2022

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We studied the effect of friction stir processing (FSP) on the microstructure and properties of high-speed twin-roll cast strips made of an experimental Al–Mn–Cu–Be alloy. The samples were examined using light, scanning, and transmission electron microscopy, microchemical analysis, X-ray diffraction, and indentation testing. During FSP, the rotational speed varied, while other parameters remained constant. The uniformity of the microstructure increased with the growing rotational speed. In the stir zone, several processes took place, and the most important were: recrystallisation of the matrix grains, fragmentation of the primary intermetallic particles Al15Mn3Be2 and their more uniform distribution in the stir zone, fracture, and dispersion of the eutectic icosahedral quasicrystalline phase (IQC), transformation of tiny Al15Mn3Be2 and IQC particles into the τ1-Al26Mn6Cu4 phase and precipitation of Al–Mn–Cu precipitates. In the thermomechanically affected zone, new dislocations formed as well as dispersion of the IQC eutectic phase and recrystallisation of the matrix grains. In the heat-affected zone, dissolution of θ’-Al2Cu precipitates occurred. The hardness variation was not severe between the stir and heat-affected zones.

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Effect of Silicon Micro-Alloying on the Thermal Conductivity, Mechanical Properties and Rheological Properties of the Al–5Ni Cast Alloy

Zhang,

Hu,

Wang

et al. 2024

Inter Metalcast

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Internal friction and heat resistance of Al, Al–Ce, Al–Ce–Zr and Al–Ce–(Sc)–(Y) aluminum alloys with high strength and high electrical conductivity

Cited by 19 publications

References 65 publications

Thermal insulation characteristics of high-temperature heat seals for hypersonic aero-engines

Thermal insulation characteristics of high-temperature heat seals for hypersonic aero-engines

Microstructure and Properties after Friction Stir Processing of Twin-Roll Cast Al–Mn–Cu–Be Alloy

Effect of Silicon Micro-Alloying on the Thermal Conductivity, Mechanical Properties and Rheological Properties of the Al–5Ni Cast Alloy

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