Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Thermal conductivity and thermal diffusivity of magnesium-lithium alloys. / Агажанов, Алибек Шаяхметович; Абдуллаев, Расул Нажмудинович; Самошкин, Дмитрий Андреевич и др.
в: Thermophysics and Aeromechanics, Том 32, № 2, 03.2025, стр. 303-309.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
}
TY - JOUR
T1 - Thermal conductivity and thermal diffusivity of magnesium-lithium alloys
AU - Агажанов, Алибек Шаяхметович
AU - Абдуллаев, Расул Нажмудинович
AU - Самошкин, Дмитрий Андреевич
AU - Непомнящих, Вячеслав Алексеевич
N1 - Agazhanov, A.S., Abdullaev, R.N., Samoshkin, D.A. et al. Thermal conductivity and thermal diffusivity of magnesium-lithium alloys. Thermophys. Aeromech. 32, 303–309 (2025). https://doi.org/10.1134/S0869864325020039 The study was financially supported by the Russian Science Foundation (Grant No. 20-79-10025), https://rscf.ru/en/project/20-79-10025/).
PY - 2025/3
Y1 - 2025/3
N2 - The thermal diffusivity (a) of solid magnesium–lithium alloys with lithium contents XLi = 5, 10, 17, 21, and 25 at. % was measured using a laser flash method in the temperature range of 300–680 K. Based on the experimental results, the thermal conductivity (λ) of alloys was calculated and compared with the literature values for λ of other compositions. The estimated uncertainties of the obtained data were 3.0–3.4 % for λ and 2.0–2.4 % for a. It is shown that the addition of lithium to magnesium reduces significantly its thermal conductivity, with a more pronounced decrease in λ observed as the Li concentration approaches XLi = 32 at. %. Anomalous features in the form of bends in the temperature dependences λ(T) and a(T) were identified for the Mg95Li5 and Mg75Li25 alloys within the temperature range of 310–330 K, similar to the behavior reported for the Mg70Li30 alloy. Using the calculated data and literature sources, the concentration dependences of thermal conductivity for the Mg–Li system were plotted over the composition range XLi = 0–32 at. %.
AB - The thermal diffusivity (a) of solid magnesium–lithium alloys with lithium contents XLi = 5, 10, 17, 21, and 25 at. % was measured using a laser flash method in the temperature range of 300–680 K. Based on the experimental results, the thermal conductivity (λ) of alloys was calculated and compared with the literature values for λ of other compositions. The estimated uncertainties of the obtained data were 3.0–3.4 % for λ and 2.0–2.4 % for a. It is shown that the addition of lithium to magnesium reduces significantly its thermal conductivity, with a more pronounced decrease in λ observed as the Li concentration approaches XLi = 32 at. %. Anomalous features in the form of bends in the temperature dependences λ(T) and a(T) were identified for the Mg95Li5 and Mg75Li25 alloys within the temperature range of 310–330 K, similar to the behavior reported for the Mg70Li30 alloy. Using the calculated data and literature sources, the concentration dependences of thermal conductivity for the Mg–Li system were plotted over the composition range XLi = 0–32 at. %.
KW - MAGNESIUM-LITHIUM ALLOYS
KW - ULTRA-LIGHT MATERIALS
KW - THERMAL CONDUCTIVITY
KW - THERMAL DIFFUSIVITY
KW - LASER FLASH METHOD
KW - СПЛАВЫ МАГНИЙ-ЛИТИЙ
KW - СВЕРХЛЕГКИЕ МАТЕРИАЛЫ
KW - ТЕПЛОПРОВОДНОСТЬ
KW - ТЕМПЕРАТУРОПРОВОДНОСТЬ
KW - МЕТОД ЛАЗЕРНОЙ ВСПЫШКИ
UR - https://www.scopus.com/pages/publications/105030112621
UR - https://elibrary.ru/item.asp?id=82745261
U2 - 10.1134/S0869864325020039
DO - 10.1134/S0869864325020039
M3 - Article
VL - 32
SP - 303
EP - 309
JO - Thermophysics and Aeromechanics
JF - Thermophysics and Aeromechanics
SN - 0869-8643
IS - 2
ER -
ID: 75445750