A Mesoscopic Mechanics Research on Deformation of 7B04 High Strength Aluminum Alloy

Abstract:

In this paper, a new method mesoscopic been studied for metal material deformation to fracture process. In the polycrystalline material plastic flow process, mesoscopic structural features was obtained for translation - vortex by digital image correlation principle. A preliminary analytical method of material deformation is established. The behavior of plastic deformation of 7B04 high strength aluminum alloy was analyzed. Grain groups deformation, amount of rotation and the energy dissipation distribution were analyzed. An important deformation features is that micro cracks were bred in severe plastic strain region on mesoscopic scale. Based on the stress concentration, the formation of rotational deformation can be regarded as the beginning of an irreversible damage criterion. The Rotation of grain groups is the reason of the formation of microcracks.

• Periodical: Key Engineering Materials (Volume 723)
• Pages: 15-20
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.723.15
• Online since: December 2016
• Authors: Ze Ming Sun*, Qi Fang Zhu, Zhi Gang Fan, Wen Xia, Shu Feng Liu, Yurii Sharkeev
• Keywords: Deformation, Fracture, Grain Groups, Mesoscopic, Rotation Field

References

[1] E. Uhlmann, K. Schauer. Dynamic load and strain analysis for the optimization of micro end mills. Annal. CIRP, 1 (2005) 75-78.

DOI: 10.1016/s0007-8506(07)60053-5

[2] V. E. Panin, A. V. Panin, D. D. Moiseenko, Physical mesomechanics of a deformed solid as a multilevel system. II. Chessboard-like mesoeffect of the interface in heterogeneous media in external fields, Phys. Mesomech. 10(1–2) (2007) 5.

DOI: 10.1016/j.physme.2007.06.001

[3] S. S. Yan, Mesoscopic systems and mesoscopic physics, Phys. 30(3) (2001) 180-181.

[4] Z. S. Ma, A brief on the basis of mesoscopic physics and recent developments in several aspects, Phys. 36(2) (2007) 98-129.

[5] J. Schmidt, D. Spath, J. Elsner. Requirements of an industrially applicable microcutting process for steel micro-structures. Microsyst. Tech. 6 (2002) 402-408.

DOI: 10.1007/s00542-002-0191-9

[6] V. E. Panin, V. E. Egorushkin, Nonequilibrium thermodynamics of a deformed solid as a multiscale system. Corpuscular-wave dualism of plastic shear, Phys. Mesomech. 11(3–4) (2008) 105-123.

DOI: 10.1016/j.physme.2008.07.001

[7] V. A. Romanova, R. R. Balokhonov, O. S. Emelyanova, On the role of internal interfaces in the development of mesoscale surface roughness in loaded materials, Phys. Mesomech. 14(3–4) (2011) 159-166.

DOI: 10.1016/j.physme.2011.08.007

[8] V. E. Panin, V. E. Egorushkin, Physical mesomechanics of crystal structure refinement upon severe plastic deformation, Phys. Mesomech. 11(5–6) (2011) 203-212.

DOI: 10.1016/j.physme.2008.11.001

[9] V. E. Panin, A. V. Panin, D. D. Moiseenko, Physical mesomechanics of a deformed solid as a multilevel system. II. Chessboard-like mesoeffect of the interface in heterogeneous media in external fields, Phys. Mesomech. 10(1-2) (2007) 5-14.

DOI: 10.1016/j.physme.2007.06.001