肖红星.Ag-In-Cd合金堆内微观组织及热物性能的实验模拟[J].稀有金属材料与工程,2016,45(1):107~111.[xiaohongxing.Experimental Simulation for Microstructure and Thermo-physical Properties of Ag-In-Cd Alloy in Reactor[J].Rare Metal Materials and Engineering,2016,45(1):107~111.]
Ag-In-Cd合金堆内微观组织及热物性能的实验模拟
投稿时间:2014-02-03  修订日期:2014-03-18
中文关键词:  Ag-In-Cd合金,辐照,微观组织,热物性能
基金项目:国家核电重大专项资助(项目号2011ZX06004-016)
中文摘要:
      通过添加不同量的Sn,同时改变合金中Ag、In和Cd含量的方法模拟了Ag-In-Cd合金在反应堆内中子辐照下的成分变化。采用光学显微镜、SEM、XRD研究了成分发生变化情况下的微观组织和热导率、比热容、热扩散率和热膨胀率等热物性能。结果表明:由于Sn组元的添加,Ag-In-Cd三元合金转变为Ag-In-Cd-Sn四元合金的同时,其微观结构由原来的单相结构(FCC)转变为双相结构(FCC HCP),第二相为Ag3In。Ag-In-Cd-Sn合金的热导率、比热容、热扩散率和热膨胀率在25-600℃范围内都随温度的升高而升高,但在相同温度条件下随合金中Ag含量的减少和Sn含量的增加,合金的热导率和热扩散率会发生明显的下降,而比热和热膨胀率却略有上升。
Experimental Simulation for Microstructure and Thermo-physical Properties of Ag-In-Cd Alloy in Reactor
英文关键词:Ag-In-Cd alloy  irradiation  microstructure  thermophysical properties
英文摘要:
      In order to understand the microstructure and thermophysical properties of Ag-In-Cd alloy in reactor under irradiation, the Ag-In-Cd-Sn alloy specimens were fabricated with the same composition for a given neutron irradiation condition. The microstructure, thermal diffusivity, specific heat, thermal conductivity and thermal expansion have been investigated by optical microscope (OM), scanning electron microscope (SEM), X ray diffractometer (XRD) and differential methods, differential scanning calorimeter, laser bombard method. The results show that the transformation induced by chemical modifications inside the single phase (FCC) alloy and, further, formation of two phases (FCC HCP). The second phase was Ag3In. The thermal conductivity, specific heat, thermal diffusivity and thermal expansion of Ag-In-Cd-Sn alloy increased as the temperature increased under the uniform Sn content between 25 to 600℃. However, the thermal conductivity and thermal diffusivity decreased obviously but the specific heat and thermal expansion increased appreciably as the Ag content decreased and the Sn content increased respectively.
作者单位E-mail
肖红星 中国核动力研究设计院 xiaohongxing2003@163.com 
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