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1)  grain boundary internal friction peak (Ke peak)
细晶粒间界内耗峰(葛峰)
2)  grain boundary internal friction peak
晶界内耗峰
1.
Experimental results show that,with increasingof Mg content,the width and relaxation strength of grain boundary internal friction peak de-crease monotonously,the peak position shifts to high temperatures at low Mg content andthen moves back to low temperature;quenching from high-temperature can suppress the grainboundary peak of Al-2.
实验表明,随 Mg 含量的增加,晶界内耗峰的峰宽和弛豫强度单调下降,峰位开始移向高温,后又移向低温;高温淬火处理能压低 Al-2。
3)  bamboo boundary internal friction peak
竹节晶界内耗峰
4)  internal friction peak
内耗峰
1.
The experimental results show that the internal friction peak of the material in the three conditions appears differently, and the influence of temperature on the characteristics of frequence of internal friction in the 3-Point Bending mode is greatest;the strain-amplitude effects of the three.
结果表明:泡沫铝硅合金在不同边界条件下的内耗峰出现情况不同,且温度对三点弯曲模式时内耗的频率特性影响最大;三种边界条件下泡沫铝硅合金的内耗的振幅效应基本相似;温度对该材料在三点弯曲模式比单双悬臂梁振动模式下内耗的影响更大。
2.
The results show that, the internal friction spectra of the samples exhibit internal friction peak at about 150 ℃.
结果表明 :该材料在 15 0℃附近有一温度内耗峰 ,且随频率增加该峰峰位向高温移动而峰高降低。
5)  damping peak
内耗峰
1.
Moreover, two relaxation damping peaks were found in the composite samples, peakⅠon about 150℃ appeared not only in pure magnesium but also in its.
并且2个弛豫内耗峰存在于复合材料试样中,出现在约150℃的峰Ⅰ不仅存在于纯镁试样中而且还存在于其复合材料试样中,认为其与位错的运动有关;出现在约250℃的峰Ⅱ仅存在于复合材料的试样中,分析认为是由于碳化硅颗粒与镁基体的界面滑移所致。
2.
The effect of five typical heat treatment technologies on the damping properties and the damping peak of the SiCP/6061Al MMC, fabricated by spray atomization and deposition, was studied.
 采用喷射共沉积方法制备了SiCP/6061Al复合材料,研究了五种热处理工艺对其阻尼性能和内耗峰的影响。
3.
Furthermore, relaxation damping peaks appearing in every heat treated sample were analyzed, the relevant activation energies were also calcula.
另外,对出现在各热处理态试样中的弛豫内耗峰进行了比较和分析,计算得到了各自相应的激活能,对其产生机制进行了探讨。
6)  α internal friction peak
α内耗峰
1.
The dynamic mechanical studies for two miscible polymer systems PEO/PMMA and SAN/PMMA showed that, just as expected, the glass transition temperature T g values, the height of α internal friction peak, and the temperature dependence of relaxation time of all the blends were between the neat components, and had a strong component dependence.
选择两组分玻璃化温度较远的PEO/PMMA以及玻璃化温度相近的SAN/PMMA两个均相共混体系为研究对象 ,考察了组分组成对共混物α内耗峰峰高、峰宽以及温频关系的影响 。
补充资料:晶粒间界
      多晶体中不同取向晶粒间的界面,简称晶界。晶界只有几个原子的厚度,早在19世纪末为冶金学家所预言,自电子显微术出现后,得到实验的证实。虽然晶界极薄,但它对晶体的许多性质,尤其是力学性质存在重大的影响。例如,晶界对位错、滑移的阻滞作用是加工硬化的重要原因;晶界滑移是高温蠕变的重要方式;而晶界断裂则是晶体脆性的主要特征。此外,晶界既是溶质原子易于偏析的场所,也是它们易于扩散的通道,因而对晶体中物质的输运和重新分布也有重要作用。
  
  一个世纪以前,人们即企求认识晶界的本质,但直到1940年J.M.伯格斯及W.L.布喇格提出晶界的位错模型后,才为认识晶界结构打开了大门。小角度晶界由特征组态的位错行列或网络构成的事实早已众所周知,关于大角度晶界的结构近年来也已出现了一些较为切合实际的模型。重合点阵模型指出:两个具有特殊取向差的晶粒存在高密度的重合阵点,当界面位于重合点阵的密排面内时,可以构成低能量的重合晶界;当取向差或界面取向偏离重合晶界时,会在重合晶界上产生特殊组态的晶界位错或台阶。结构单元模型提出,界面处原子应调整位置,形成以重合点阵为周期而交互作用能最小的原子集团──结构单元,从而改进了重合点阵模型。这些模型均已取得一定成功,而近年来利用高分辨率电子显微镜对晶界原子图像的直接观察也取得了有意义的结果。
  
  

参考书目
   S.Amelinckx and W.Dekeyser,The Structure andProperties of Grain Boundaries, F.Seitz and D.Turnball,ed.,Solid State Physics,Academic Press, New York, 1959.
   A.G.Chadmick and A.D.Smith,Grain Boundary Structure and Properties, Academic Press,New York,1976.
  

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