Thermal diffusivity and thermal conductivity of Mg-Zn-rare earth element alloys with long-period stacking ordered phase
Thermal diffusivity and thermal conductivity of Mg-Zn-rare earth element alloys with long-period stacking ordered phase
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DOI：
10.1016/j.scriptamat.2008.10.022
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发表时间：
2009-02-01
影响因子：
6
通讯作者：
Kawamura, Yoshihito
中科院分区：
文献类型：
--
作者：
Yamasaki, Michiaki;Kawamura, Yoshihito
在298-573K温度范围内，测量了长周期堆积有序结构(LPSO)镁锌稀土(RE)合金的热扩散率和比热，并计算了它们的导热系数。合金的热扩散率和导电率与温度的关系较弱，正温度系数较小。由于LPSO相的形成消耗了作为电子和声子散射中心的溶质元素，LPSO相析出的镁锌稀土合金表现出比固溶处理的合金更高的导热系数。(C)2008 Acta Materialia Inc.由爱思唯尔有限公司出版。版权所有。
The thermal diffusivity and specific heat of Mg-Zn-rare earth (RE) alloys with long-period stacking ordered (LPSO) structure were measured over the temperature range 298-573 K and their thermal conductivity was calculated. The thermal diffusivity and conductivity of the alloys are weakly temperature dependent with small positive temperature coefficients. LPSO phase-precipitated Mg-Zn-RE alloys exhibit higher thermal conductivity than their solution-treated counterparts because the formation of the LPSO phase Consumes Solute elements that behave as scatter centers for electrons and phonons. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.