Phase Transition Heat Storage Properties of Mg-Al-Ga Alloy

Wen Hongyan; Ye Peiyi; Dong Xu; Xu Lianyou; Fan Xiaoming

doi:10.15980/j.tzzz.2022.01.007

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Phase Transition Heat Storage Properties of Mg-Al-Ga Alloy
Vol. 42, Issue 1, Pages: 36-39(2022)
Published： 2022 ，
DOI： 10.15980/j.tzzz.2022.01.007

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Wen Hongyan, Ye Peiyi, Dong Xu, et al. Phase Transition Heat Storage Properties of Mg-Al-Ga Alloy. [J]. Special Casting & Nonferrous Alloys 42(1):36-39(2022)
DOI：

Wen Hongyan, Ye Peiyi, Dong Xu, et al. Phase Transition Heat Storage Properties of Mg-Al-Ga Alloy. [J]. Special Casting & Nonferrous Alloys 42(1):36-39(2022) DOI： 10.15980/j.tzzz.2022.01.007.

摘要

试验制备了Mg-19Al-24Ga、Mg-15Al-25Ga和Mg-15Al-31Ga 3种三元合金

研究了其物相组成、显微组织和储热性能。结果表明

3种合金相组成均为Mg

、Al

和α-Mg

具有较高的相变潜热

且相变温度均处于中温储热温度范围（90～400℃）

其中Mg-19Al-24Ga合金具有最低的相变温度和最高的相变潜热

分别为373.67℃和172.70 J·g

-1

是较好的中温相变储热材料。

Abstract

Three ternary alloys

Mg-19 Al-24 Ga

Mg-15 Al-25 Ga and Mg-15 Al-31 Ga

were designed and prepared experimentally

and their phase composition

microstructure and heat storage properties were investigated. The results show that the all alloys consist of Mg

and α-Mg phases

and have high latent heat of phase transition

of which the temperature are in the range of middle temperature thermal energy storage（90～400 ℃）. The Mg-19 Al-24 Ga alloy has the lowest phase transition temperature and the highest latent heat

which are 373.67 ℃ and 172.70 J·g

-1

respectively. Therefore

Mg-19 Al-24 Ga alloy can be a good phase transition material for middle temperature heat storage.