The Maraging steel blades of the Virgo Super Attenuator
The Maraging steel blades of the Virgo Super Attenuator
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Virgo 超级衰减器的马氏体时效钢刀片
DOI：
10.1088/0957-0233/11/5/304
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发表时间：
2000
影响因子：
2.4
通讯作者：
R. Valentini
中科院分区：
文献类型：
--
作者：
S. Braccini;C. Casciano;F. Cordero;F. Corvace;M. Sanctis;R. Franco;F. Frasconi;E. Majorana;G. Paparo;R. Passaquieti;P. Rapagnani;F. Ricci;D. Righetti;A. Solina;R. Valentini
叶片是Virgo超级衰减器的重要组成部分。其结构所用材料为马氏体时效钢，这是一种低碳合金，具有高极限抗拉强度和低应力蠕变。测量了材料的杨氏模量、剪切模量、泊松比和相应的弹性能量损失系数。测量已进行的试样进行相同的热处理的Virgo干涉仪实现与马氏体时效钢的元素。此外，材料的滞弹性性能进行了不同的热处理已被测量。已经发现，对于马氏体时效钢结构（一个自由的塑性变形），它经历了一个激励与弯曲振动，弹性能量损失系数可以在很宽的范围内变化的功能的热处理的材料，它是由热弹性效应。这种变化的主要原因是热导率对沉淀颗粒的平均尺寸和它们的相对分离度的依赖性。
The blades are crucial components of the Virgo super attenuators. The material used for their construction is maraging steel, a low-carbon-content alloy with high ultimate tensile strength and low creep under stress. Young's modulus, the shear modulus, the Poisson ratio and the corresponding elastic energy-loss coefficients have been measured. The measurements have been performed on specimens subjected to the same thermal treatments as those of elements for the Virgo interferometer realized with maraging steel. In addition, anelastic properties of the material subjected to different thermal treatments have been measured. It has been found that, for a maraging-steel structure (one free of plastic deformation), which undergoes an excitation with flexural vibrations, the elastic energy-loss coefficient can vary over a wide range as a function of the thermal treatment of the material and it is dominated by the thermo-elastic effect. The main reason for such a great alteration is supposed to be the dependence of the thermal conductivity on the average sizes of the precipitate particles and their relative separations.