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of interfaces. These are beneficial to the thermo-physical properties of materials. 3.2 Linear coefficient of thermal expansion Fig.2 shows the linear CTEs of three Sip/4032 composites at different... of thermal expansion (7.5×10-6 ℃-1) and high thermal conductivity ranging from 126 to 157.9 W/(m·℃). With increasing temperature, the specific capacity and the average coefficient of thermal expansion......
in the vicinity of the martensitic transformation. The maximal negative thermal expansion coefficient occurs in alloy with x of 1.0 is about -139.84×10-6 K-1. This abnormal negative thermal expansion...Ni含量基本上无直接关系,很可能是Ni含量变化太小的缘故;3) 对比两相的热膨胀系数可知,马氏体相的热膨胀系数约为奥氏体相的1.34~2.05倍. 2.3.3 马氏体相变附近的热膨胀特性 表2 合金Ni54+xMn19-xGa27在马氏体相和奥氏体相的平均热膨胀系数 Table 2 Average thermal expansion coefficients......
Thermal expansion anomaly and spontaneous magnetostriction of Gd2Fe17 compound郝延明,梁飞飞,张学敏,王芳,吴延昭College of Science, Tianjin University of Science & Technology摘 要:Materials with negative thermal expansion have many practical applications. However, these materials are known in only several oxide systems, and when the negative thermal expansion occurs......
Thermal expansion anomaly and spontaneous magnetostriction of Gd2Fe17 compound郝延明,梁飞飞,张学敏,王芳,吴延昭College of Science, Tianjin University of Science & Technology摘 要:Materials with negative thermal expansion have many practical applications. However, these materials are known in only several oxide systems, and when the negative thermal expansion occurs......
%,bending strength 1057.9 MPa,hardness 72.5 HRA,electronic resistivity 1.28×10-7Ω·m-1,thermal conductivity 139 W.m-1.K-1,and lower coefficient of thermal expansion 7.4×10-6K-1.Mo-Cu composites have...Mechanical properties and expansion coefficient of Mo-Cu composites with different Ni contentsGUO Shibo a,KANG Qiping a,CAI Chunbo a,and Qu Xuanhui b a College of Electromechanical Engineering,Hunan......
constants, and the changes of negative thermal expansion coefficients are not obvious. The linear expansion coefficients of Zr1-xHfxW2O8 (x = 0, 0.3, 0.5, 0.7, and 1.0) are about -6关键词:...Characterization of the negative thermal expansion material Zr1-xHfxW2O8SHEN Rong WANG Cong WANG Tianmin DONG Cheng, CHEN Hong, and LIANG Jingkui1) Center of Material Physics and Chemistry, School......
carbide aluminum-base composites; electronic packaging; semi-solid thixoforming; thermal conductivity; coefficient of thermal expansion... of SiC decreases gradually from the bottom to the walls. Accordingly, the thermal conductivities of bottom center and walls are 178 and 164 W·m-1·K-1, the coefficients of thermal expansion (CTE) are 8.2......
is deduced and the result illustrates that useful wrinkles are easier to be obtained for tube with higher strain hardening coefficient value and tubular part with smaller expansion ratio. Key words: warm... shape and amount might be useful to increase the expansion ratio limit in warm tube hydroforming. The higher the strain hardening coefficient value of a material, the easier the useful wrinkles can......
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J. Cent. South Univ. Technol. (2008) 15: 198-203 DOI: 10.1007/s11771-008-0038-3 Simulation of thermal and sodium expansion stress in aluminum reduction cells LI Jie(李 劼), WU Yu-yun(伍玉云), LAI... block. Thermal stress field was calculated by the other slice model of the cell at the end of the heating-up. Then stresses[A1] coupling thermal and sodium expansion were considered after 30 d start......