Axial symmetry explosive compaction of W-Ti powders

被引：0

作者：

State Key Laboratory of Transient Physics, NUST, Nanjing 210094, China ^{[1
]}

不详 ^{[2
]}

机构：

来源：

Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals | 2008年 / 18卷 / 08期

关键词：

Titanium alloys - Binary alloys - Tungsten alloys - Compaction - Powders - Numerical models;

D O I：

暂无

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学科分类号：

摘要：

Axial symmetry explosive compaction was investigated for W-Ti powders at different mass ratios of explosive to mixed powders (E/M). The micrographs near the axis of the specimens were taken by the light microscope. Numerical simulation of explosive compaction was carried out to recur LS-DYNA3D program. Pressure cloud pictures of the set-up for explosive compaction, pressure time-history curve of the certain elements of the axis of the sample and the radial displacement of the certain nodes of the center cut of it were protracted. Influences of E/M on specimen density and the formation of mach-hole were analyzed. The results show that the specimens with high density over 98% (T. D) can be obtained by explosive compaction of powders. E/M is an important parameter that affects the specimen quality. With increasing E/M, the density of the specimens increases firstly, and then the mach-hole appears that debases the compact quality. The prediction results of numerical simulation show a good agreement with the experimental measurements.

引用

页码：1527 / 1533