Microscopic Characteristics of Damage Evolution in Ultrapure Aluminum under Tensile Loading
QI Mei-Lan1,2**, ZHONG Sheng1, FAN Duan1, LUO Chao1, HE Hong-Liang2
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
Microscopic Characteristics of Damage Evolution in Ultrapure Aluminum under Tensile Loading
QI Mei-Lan1,2**, ZHONG Sheng1, FAN Duan1, LUO Chao1, HE Hong-Liang2
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
摘要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.
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.
[1] Rinehart J S 1951 J. Appl. Phys. 22 555
[2] Curran D R, Seaman L and Shockey D A 1987 Phys. Rep. 147 253
[3] Chen D N, Yu Y Y, Yin Z H, Wang H R Liu G Q 2005 Int. J. Impact Eng. 31 811 (in Chinese)
[4] Chen X, Asay J R, Dwivedi S K and Field D P 2006 J. Appl. Phys. 99 023528
[5] Curran D R, Seaman L and Shockey D A 1987 Phys. Rep. 147 253
[6] Keller D V and Trulio J G 1963 J. Appl. Phys. 34 172
[7] Romanchenko V I and Stepanov G V 1980 J. Appl. Mech. Tech. Phys. 21 141
[8] Wang Y G 2006 PhD Dissertation (Chengdu: China Academy of Engineering Physics) (in Chinese)
[9] Dremov V, Petrovtsev A, Sapozhnikov P and Smirnova M 2006 Phy. Rev. B 74 144110
[10] Srinivasan S G, Baskes M I and Wagner G J 2007 J. Appl. Phys. 101 043504
2011, Vol. 28 
