The influence of particle morphology on the dynamic densification of metal powders
File(s)
Published version
Author(s)
Eakins, D
Chapman, D
Type
Journal Article
Abstract
Powders are well known for their dispersive properties, which derive from the many dissipative processes that occur during densification. While numerous studies have been devoted to understand these processes over a wide range of initial densities, the influence of particle morphology has been for the large part overlooked. In this paper, we discuss a new research campaign at the Institute of Shock Physics, to systematically investigate the role of starting configuration on the dynamic densification of metal powders. Multi-target gun loading experiments have been performed on both stainless steel and copper powders of equiaxed-and fiber-shaped morphology. Frequency-shifted PDV was employed to measure the structure and velocity of the dynamic densification wave, to yield the crush strength of the various powders. We find that while the crush strength for the stainless steel powders is reasonably described by a modifiedWu-Jing model, this model underpredicts the densification stress for the copper powder.
Date Acceptance
2012-03-01
Citation
AIP Conference Proceedings, 1426, pp.1491-1494
ISSN
1551-7616
Publisher
American Institute of Physics (AIP)
Start Page
1491
End Page
1494
Journal / Book Title
AIP Conference Proceedings
Volume
1426
Copyright Statement
Copyright © (year) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in AIP Conf. Proc. 1426, 1491 (2012); http://dx.doi.org/10.1063/1.3686565
Conference date: 26 June–1 July 2011
Location: Chicago, Illinois and may be found at https://dx.doi.org/10.1063/1.3686565
Conference date: 26 June–1 July 2011
Location: Chicago, Illinois and may be found at https://dx.doi.org/10.1063/1.3686565
Publication Status
Published