摘要
利用两面顶压机和六面顶压机作为压力装置，分别对９３钨合金材料进行了高压超声测量。测得了９３钨合金材料在常态下的横、纵波声速及在０～３ＧＰａ压力范围内的纵波声速随压力的变化关系。测量结果为：在常温常压下，９３钨合金的纵波声速为ｃＬ＝５．１３５ｋｍ／ｓ，横波声速为ｃｔ＝２．９８７ｋｍ／ｓ。纵波声速随压力变化的关系式为：ｃＬ＝５．０５３＋０．６０２ｐ（ＧＰａ）。估算的９３钨合金相关力学参量为：Ｇ＝１５７．４ＧＰａ，Ｅ＝３９３．０ＧＰａ，Ｋ＝２６０．２ＧＰａ，λ＝１５５．３ＧＰａ，μ＝１５７．４ＧＰａ，ν＝０．２４８。经过对两种超声测量方法测量结果的比较及冲击波测量数据的验证，这些参数是可靠的。
Longitudinal and transversal sound velocities of 93W alloy were measured by using a belt type and a cubic type high pressure apperatus,respectively.Results show that under normal temperature and pressure conditions,this tungsten alloy materials have a longitudinal velocity ( c L) of 5.135km/s and transversal velocity ( c t) of 2.987km/s.Pressure dependence of longitudinal velocity is linear in the pressure range up to 3GPa,with a form of c L=5.053+0.02 p ,where p is in unit of GPa.Bulk sound velocity calculated from these data is 3.86km/s,which is quite close to the shock wave experiment results of 4.008km/s .Other parameters under normal conditions are:shear modulus G =157.4GPa,Young s modulus E =393.0GPa,bulk modulus K =260.2GPa,Lame coefficients λ =155.3, μ =157.4,Possion s rate ν =0.248.
出处
《高压物理学报》
CAS
CSCD
北大核心
1998年第2期150-155,共6页
Chinese Journal of High Pressure Physics
关键词
钨铪金材料
超声测量
纵波声速
力学参理
高压
tungsten alloy, ultrasonic measurement, longitudinal sound velocity, transversal sound velocity.
