INVESTIGATION OF DEFORMATION AND FRACTURE FOR THIN BERYLLIUM FOILS UNDER STATIC LOADING BY EXTERNAL PRESSURE
INVESTIGATION OF DEFORMATION AND FRACTURE FOR THIN BERYLLIUM FOILS UNDER STATIC LOADING BY EXTERNAL PRESSURE
复制标题
薄铍箔在外压静载荷作用下变形与断裂的研究
DOI：
--
复制
发表时间：
2018
期刊：
影响因子：
--
通讯作者：
I. Shishov
中科院分区：
文献类型：
--
作者：
V. Mishin;I. Shishov
本文对厚度为5-100μm的铍薄片的变形和断裂进行了数值和实验研究。用于X射线窗口的圆盘是通过严重冷变形的方法获得的。结果表明，铍箔在外压加载(或胀大试验)下的极限应变值高于拉伸试验中的极限应变。结果表明，膨胀试验时的断裂发生在累积塑性应变达到15-20%时，这对于铍来说是非常高的。
In this paper numerical and experimental studies of deformation and fracture of thin beryllium disks with a thickness of 5-100 μm are performed. Disks, intended for use as X-ray windows, were obtained by the method of severe cold deformation. It is shown that beryllium foils under loading by external pressure (or bulge test) have higher values of ultimate strains than in tensile tests. It is established that the fracture at bulge test occurs at values of the accumulated plastic strain amounting to 15-20%, what very high for beryllium.