-
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0~3 GPa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=5.135 km/s,横波声速为ct=2.987 km/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=157.4 GPa,E=393.0 GPa,K=260.2 GPa,=155.3 GPa,=157.4 GPa,=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。Abstract: Longitudinal and transversal sound velocities of 93W alloy were measured by using a belt type and a cubic-type high pressure apparatus, respectively. Results show that under normal temperature and pressure conditions, this tungsten alloy materials have a longitudinal velocity (cL) of 5.135 km/s and transversal velocity (ct) of 2.987 km/s. Pressure dependence of longitudinal velocity is linear in the pressure range up to 3 GPa, with a form of cL=5.053+0.02p, where p is in unit of GPa. Bulk sound velocity calculated from these data is 3.86 km/s, which is quite close to the shock wave experiment results of 4.008 km/s. Other parameters under normal conditions are: shear modulus G=157.4 GPa, Young's modulus E=393.0 GPa, bulk modulus K=260.2 GPa, Lame coefficients =155.3, =157.4, Possion's rate =0.248.
-
王金贵, 施卫丰. 髙压物理学报, 1995, 9(3): 195. 张万甲, 杨中正. 高压物理学报, 1995, 9(4): 279. 周显明. 钨合金髙压本构方程研究. 成都: 中物院流体物理研究所, 1995. 张江跃. 材料强度对冲击绝热线的影响. 合肥: 中国科技大学, 1996. 张汉钊. 密实及疏松材料超声测量. 成都: 中物院流体物理研究所, 1995. 尹祥础. 固体力学. 北京: 地震出版社, 1985. 经福谦. 实验物态方程导引. 北京: 科学出版社, 1986. 徐有生, 等. 高压物理学报, 1996, 10(2): 145. 谢鸿森, 等. 中国科学(B辑), 1993, 23(8): 861.
点击查看大图
计量
- 文章访问数: 7432
- HTML全文浏览量: 382
- PDF下载量: 574