Micromechanics of spall and damage in tantalum

被引：79
|
作者：
Zurek, AK
Thissell, WR
Johnson, JN
Tonks, DL
Hixson, R
机构：
[1] Mechanics of Materials, Los Alamos
[2] Applied Theoretical Physics, Los Alamos
[3] Dynamic Experimentation Los A., Los Alamos
来源：
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 1996年 / 60卷 / 1-4期
关键词：
spall; tantalum; void initiation; damage; impact experiments;
D O I：
10.1016/0924-0136(96)02340-0
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We conducted a number of plate impact experiments using an 80-mm launcher to study dynamic void initiation, linkup, and spall in tantalum. The tests ranged in shock pressure so that the transition from void initiation, incipient spall, and full spall could be studied. Wave profiles were measured using a velocity interferometry system (VISAR), and targets were recovered using ''soft'' recovery techniques. We utilized scanning electron microscopy, metallographic cross-sections, and plateau etching to obtain quantitative information concerning damage evolution in tantalum under spall conditions. The data (wave profiles and micrographs) are analyzed in terms of a new theory and model of dynamic damage cluster growth.
引用
收藏
页码：261 / 267
页数：7
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