Dynamic failure in two-phase materials
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Previous experimental research has shown that microstructural features such as interfaces, inclusions, vacancies, and heterogeneities can all act as voidnucleation sites. However, it is not well understood how important these interfaces are to damage evolution and failure as a function of the surrounding parentmaterials. In this work, we present results on three different polycrystallinematerials: (1) Cu, (2) Cu-24 wt. %Ag, and (3) Cu-15 wt. %Nb which were studied to probe the influence of bi-metal interfaces onvoidnucleation and growth. These materials were chosen due to the range of difference in structure and bulk properties between the two phases. The initial results suggest that when there are significant differences between the bulk properties (for example: stacking fault energy, melting temperature, etc.) the type of interface between the two parent materials does not principally control the damage nucleation and growth process. Rather, it is the “weaker” material that dictates the dynamic spall strength of the overall two-phase material.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC52-06NA25396
- OSTI ID:
- 1240615
- Report Number(s):
- LA-UR-15-25224; JAPIAU
- Journal Information:
- Journal of Applied Physics, Vol. 118, Issue 23; ISSN 0021-8979
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Unraveling the Role of Interfaces on the Spall Failure of Cu/Ta Multilayered Systems
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journal | January 2020 |
The effect of distribution of second phase on dynamic damage
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journal | August 2016 |
The void nucleation mechanism within lead phase during spallation of leaded brass
|
journal | April 2018 |
Computational Analysis Methods in Atomistic Modeling of Crystals
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journal | December 2013 |
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