THERMAL ANALYTICAL INVESTIGATIONS OF Al-Mg-Zn EUTECTIC ALLOY
摘 要
利用差示扫描量热仪(DSC)和H-90型膨胀仪,对潜热储能材料Al-34% Mg-6% Zn和Al-28% Mg-14% Zn合金的热物性参数——固液态时的比热容、30~500℃间的质量密度、熔化温度和熔化潜热等进行了测定。测试结果表明,两种合金的熔化温度和熔化潜热分别为454和447℃及314.4和303.2kJ/kg。从室温加热到熔化温度时,两种合金的密度分别减少1.05%和1.09%。在相变之前,两种合金的比热容随温度的升高而增大,在445℃时,分别为1 368.5和1 203.6 J/(kg·K)。在相变过程中,由于熔化潜热的原因,合金的比热容变化很大。对合金组元和合金相对热物性参数的影响进行了讨论。
Abstract
The thermo-physical properties of Al-34% Mg-6% Zn (in wt.%) and Al-28%Mg-14%Zn alloys used for thermal energy storage applications,such as the specific heat capacity including solid and liquid state;the mass density in the temperature range 30~500℃;the melting temperature and the latent heat of fusion were determined by differential scanning calorimetry (DSC) and H-90 type Dilatometer. The test results showed that the melting temperature and latent heat of fusion for the two alloys were 454,447℃ and 314.4,303.2kJ/kg,respectively. The density of the two alloys heated from room temperature to melting temperature were decreased by 1.05%,1.09%,respectively. The specific heat capacity of the two alloys were growing with the temperature increasing before the beginning of phase change,and were 1368.5,1203.6J/(kg·K)at 445℃,respectively. The change of specific heat capacity were great due to existing of latent heat of fusion during the phase transformation process. The mechanism of alloy compositions and phases′s effection on these properties were also discussed in this paper.
中图分类号 TB34/TG113.223
所属栏目 试验与研究
基金项目 国家自然科学基金资助项目(59876010)
收稿日期 2006/9/19
修改稿日期
网络出版日期
作者单位点击查看
备注孙建强(1964-),男,博士。
引用该论文: SUN Jian-qiang,ZHONG Run-ping. THERMAL ANALYTICAL INVESTIGATIONS OF Al-Mg-Zn EUTECTIC ALLOY[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2007, 43(3): 112~116
孙建强,钟润萍. 铝镁锌共晶合金的热分析研究[J]. 理化检验-物理分册, 2007, 43(3): 112~116
共有人对该论文发表了看法,其中:
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】张仁元,柯秀芳.新型相变材料与电热相变储能热水热风联供装置及经济性分析[J].电力需求侧管理,2002,4(6);23-26.
【2】Birchenall C E,Riechman A F. Heat storage in eutectic alloys[J]. Metallurgical Transactions A,1980,(11A):1415-1420.
【3】Farkas D,Birchennall C E. New eutectic alloys and their heats of transformation[J]. Metallurgical Transactions A,1985(16A):324-328.
【4】Achard P. Heat Storage at 450 deg C in Aluminum-Magnesium Alloys[A]. Rational Utilization of Energy[C]. France: Editions Europeennes Thermique et Industrie,1981:39-46.
【5】《铸造有色合金手册》编写组.铸造有色合金手册[M].北京:机械工业出版社,1978.
【6】中国金属学会,中国有色金属学会.金属材料物理性能手册第一册,金属物理性能及测试方法[M].北京;冶金工业出版社,1987.
【7】梁英教,车荫昌.无机热力学数据手册[M].沈阳:东北大学出版社,1993.
【8】蒙多尔福.铝合金的组织与性能[M].北京:冶金工业出版社,1988.
【9】宋学猛.金属物理性能分析[M].北京:机械工业出版社,1990.
【10】马庆芳,方荣生,项立成.实用热物理性质手册[M].北京:中国机械出版社,1986.
【11】胡汉起.金属凝固[M].北京:冶金工业出版社,1985.
【2】Birchenall C E,Riechman A F. Heat storage in eutectic alloys[J]. Metallurgical Transactions A,1980,(11A):1415-1420.
【3】Farkas D,Birchennall C E. New eutectic alloys and their heats of transformation[J]. Metallurgical Transactions A,1985(16A):324-328.
【4】Achard P. Heat Storage at 450 deg C in Aluminum-Magnesium Alloys[A]. Rational Utilization of Energy[C]. France: Editions Europeennes Thermique et Industrie,1981:39-46.
【5】《铸造有色合金手册》编写组.铸造有色合金手册[M].北京:机械工业出版社,1978.
【6】中国金属学会,中国有色金属学会.金属材料物理性能手册第一册,金属物理性能及测试方法[M].北京;冶金工业出版社,1987.
【7】梁英教,车荫昌.无机热力学数据手册[M].沈阳:东北大学出版社,1993.
【8】蒙多尔福.铝合金的组织与性能[M].北京:冶金工业出版社,1988.
【9】宋学猛.金属物理性能分析[M].北京:机械工业出版社,1990.
【10】马庆芳,方荣生,项立成.实用热物理性质手册[M].北京:中国机械出版社,1986.
【11】胡汉起.金属凝固[M].北京:冶金工业出版社,1985.
相关信息