LF－6及LY－12铝高温凝聚态动力学性质研究──高温剪切模量的测量  

DYNAMIC PROPERTIES OF LF-6 AND LY-12 ALUMINIUM ALLOY UNDER HIGH TEMPERATURE HIGH TEMPERATURE SHEARIGN MODULUS MEASUREMENTS

作　　者：王春奎[1] 

机构地区：[1]中国科学院力学研究所

出　　处：《高压物理学报》1994年第3期213-219,共7页Chinese Journal of High Pressure Physics

摘　　要：介绍ＬＦ－６及ＬＹ－１２铝合金从常温到４００℃高温下，在扭转Ｈｏｐｋｉｎｓｏｎ杆上作的动态剪切模量的测试研究，并给出了相应温度范围ＬＦ－６铝杨氏模量及泊松比。它们和现有文献中的静态结果比较表明，动态性能普遍高于静态值，在高温下更显著。实验结果表明ＬＦ－６和ＬＹ－１２铝合金，对于温度和加载率都是敏感的，高加载率下相对于静态的温度，敏感性要弱一些。文中给出了剪切模量、弹性模量等与温度的关系式。Investigations of high temperature shearing medulus with the torsional Hopkinsonbar method,of LF-6 and LY-12 aluminium alloy at temperatures up to 44o℃,is intreduced,e-lastic modulus and Poisson ratio of LF-6 aluminium alloy are reported.Results show that thesedynamic properties,especially at high temperatures,are generally higher than their static ones,LF-6 and LY-12 aluminium alloy are sensitive to both temperature and loading rates,but theirsensitivity to temperature at high strain rates is less than that in static loading rate.In this paperrelations of the shearing modulus and elastic modulus with temperature are given.

关 键 词：LF-6 铝合金 LY-12 高温 剪切模量 

分 类 号：TG146.21[一般工业技术—材料科学与工程]