Influence of strain rate and temperature on the mechanical behavior of beryllium

被引：0
|
作者：
Blumenthal, WR [1 ]
Abeln, SP [1 ]
Cannon, DD [1 ]
Gray, GT [1 ]
Carpenter, RW [1 ]
机构：
[1] Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA
来源：
SHOCK COMPRESSION OF CONDENSED MATTER - 1997 | 1998年 / 429卷
关键词：
D O I：
暂无
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
The compressive stress-strain response of three grades of beryllium were studied as a function of strain rate and temperature. Grades S200D, E, and F represent a historical perspective of beryllium processing from the 1960's through 1990's technology. The purpose of this study was to measure the mechanical behavior of beryllium over a range of deformation conditions for constitutive model development and to obtain microstructural evidence for deformation mechanisms. The compressive stress-strain response was found to be independent of grade and strongly dependent on the applied strain rate between 0.001 and 8000 s(-1). The strain-hardening response displayed a moderate temperature dependence between 77 degrees K and 873 degrees K. Microstructural examination of SHPB specimens revealed that twinning was extensive at strains above 7%. A SHPB sample deformed to over 20% strain contained both twinning and grain boundary microcracking.
引用
收藏
页码：411 / 414
页数：4
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