High-temperature phase transition behavior and magnetocaloric effect in a sub-rapidly solidified La–Fe–Si plate produced by centrifugal casting
Document Type
Article
Publication Date
8-1-2018
Abstract
A sub-rapidly solidified LaFe11.6Si1.4 plate was fabricated directly from liquid by centrifugal casting method. The phase constitution, microstructure and magnetocaloric effect were investigated using backscatter scanning electron microscopy, X-ray diffraction, differential scanning calorimetry and physical property measurement system. When the plate was annealed at 1373 K, ?1 phase was formed by a solid-state peritectoid reaction. A first-order magnetic phase transition occurred in the vicinity of 188 K, and the effective refrigeration capacities reached 203.5 J/kg and 209.7 J/kg in plates annealed for 1 h and 3 h, respectively, under a magnetic field change of 3 T. It is suggested that centrifugal casting may become a new approach to prepare high-performance La–Fe–Si magnetocaloric plates for practical applications, which could largely accelerate the formation of ?1 phase during high-temperature heat-treatment process due to refined and homogeneous honeycombed microstructure.
Recommended Citation
Xu, Zhishuai; Dai, Yuting; Fang, Yue; Luo, Zhiping; Han, Ke; Song, Changjiang; Zhai, Qijie; and Zheng, Hongxing, "High-temperature phase transition behavior and magnetocaloric effect in a sub-rapidly solidified La–Fe–Si plate produced by centrifugal casting" (2018). College of Health, Science, and Technology. 840.
https://digitalcommons.uncfsu.edu/college_health_science_technology/840