| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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Microscopic Characteristics of Damage Evolution in Ultrapure Aluminum under Tensile Loading |
| QI Mei-Lan1,2**, ZHONG Sheng1, FAN Duan1, LUO Chao1, HE Hong-Liang2
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1School of Science, Wuhan University of Technology, Wuhan 430070
2Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900
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| Cite this article: |
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QI Mei-Lan, ZHONG Sheng, FAN Duan et al 2011 Chin. Phys. Lett. 28 016103 |
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Abstract A series of plate-experiments are carried out to acquire ultrapure aluminum (purity, 99.999%) samples with damage. Based on the metallographic of all "soft-recovered" samples, the characteristics of damage evolution and spallation damage mechanism in ultrapure aluminum are analyzed in detail. Results show that the damage will increase regularly with increasing loading strength. Most of voids appear in the grain boundary and grow alone under tensile loading before they coalesce each other to form big irregular voids. These analysis results are helpful to understand the evolution process of ductile metal dynamic fracture and establish the damage evolution model.
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| Keywords:
61.90.+d
62.20.Fe. 62.50.+p
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Received: 26 May 2010
Published: 23 December 2010
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