23
4.7 Conclusion
The dynamic tensile behavior of AA7475-T7351 at different strain rate (10
−4
–1500) and temperature (25–250 °C) is presented in this chapter. Experimental results are used to determine parameters of Johnson-Cook constitutive law. The experimental results show positive strain rate sensitivity for the strain rate regime under consideration. A moderate strain rate
sensitivity of the fracture strain is observed. It is also observed that the fracture strain and area reduction are very sensitive
towards deformation temperature. The mechanical property of AA7475-T7351 reported in this chapter can be used for the
efficient design of lightweight vehicle.
References
1. Tabei, A., Shih, D.S., Garmestani, H., Liang, S.Y.: Dynamic recrystallization of Al alloy 7075 in turning. J. Manuf. Sci. Eng. 138(7),
071010 (2016)
2. Driemeier, L., Brünig, M., Micheli, G., Alves, M.: Experiments on stress-triaxiality dependence of material behavior of aluminum alloys.
Mech. Mater. 42(2), 207–217 (2010)
3. Teimouri, R., Amini, S., Mohagheghian, N.: Experimental study and empirical analysis on effect of ultrasonic vibration during rotary turning
of aluminum 7075 aerospace alloy. J. Manuf. Process. 26, 1–12 (2017)
4. Starke Jr., E.A., Staley, J.T.: Application of modern aluminium alloys to aircraft. In: Fundamentals of Aluminium Metallurgy, pp. 747–783.
Woodhead Publishing, Oxford (2011)
5. Higashi, K., Mukai, T., Kaizu, K., Tsuchida, S., Tanimura, S.: Strain rate dependence on mechanical properties in some commercial aluminum
alloys. J. Phys. IV. 1(C3), C3-341 (1991)
6. Oosterkamp, L.D., Ivankovic, A., Venizelos, G.: High strain rate properties of selected aluminium alloys. Mater. Sci. Eng. A. 278(1–2),
225–235 (2000)
7. Reyes, A., Hopperstad, O.S., Lademo, O.G., Langseth, M.: Modeling of textured aluminum alloys used in a bumper system: material tests and
characterization. Comput. Mater. Sci. 37(3), 246–268 (2006)
8. Børvik, T., Clausen, A.H., Eriksson, M., Berstad, T., Hopperstad, O.S., Langseth, M.: Experimental and numerical study on the perforation of
AA6005-T6 panels. Int. J. Impact Eng. 32(1–4), 35–64 (2005)
9. Singh, N.K., Singha, M.K., Cadoni, E., Gupta, N.K.: Strain rate sensitivity of an aluminium alloy under compressive loads. In: Advanced
Materials Research, vol. 548, pp. 169–173. Trans Tech Publications Ltd, Zurich (2012)
10. Singh, N.K., Cadoni, E., Singha, M.K., Gupta, N.K.: Dynamic tensile and compressive behaviors of mild steel at wide range of strain rates.
J. Eng. Mech. 139(9), 1197–1206 (2013)
11. Chen, Y., Clausen, A.H., Hopperstad, O.S., Langseth, M.: Stress–strain behaviour of aluminium alloys at a wide range of strain rates. Int.
J. Solids Struct. 46(21), 3825–3835 (2009)
12. Johnson, G.R.: A constitutive model and data for materials subjected to large strains, high strain rates, and high temperatures. In: Proc. 7th Inf.
Sympo. Ballistics, pp. 541–547 (1983)
13. Engineers and Builders: Standard tools and techniques for dynamic characterization of materials. Design Book (2015). http://www.engineersandbuilders.com
0.00
0.02
0.04
0.06
0.08
0.10
300
350
400
450
500
550
600
)
a
P
M
(
s
s
e
r
t
S
e
u
r
T
True Plastic Strain
True plastic stress (10
-4 s -1 )
JC fit (10
-4 s -1 )
True plastic stress (10
-1 s -1 )
JC fit (10
-1 s -1 )
Fig. 4.10 Comparison
between the experimental
result and Johnson-Cook
Model perdition
4 Constitutive Behavior of AA7475-T7351 at High Strain Rate and Elevated Temperatures
4.7 Conclusion
The dynamic tensile behavior of AA7475-T7351 at different strain rate (10
−4
–1500) and temperature (25–250 °C) is presented in this chapter. Experimental results are used to determine parameters of Johnson-Cook constitutive law. The experimental results show positive strain rate sensitivity for the strain rate regime under consideration. A moderate strain rate
sensitivity of the fracture strain is observed. It is also observed that the fracture strain and area reduction are very sensitive
towards deformation temperature. The mechanical property of AA7475-T7351 reported in this chapter can be used for the
efficient design of lightweight vehicle.
References
1. Tabei, A., Shih, D.S., Garmestani, H., Liang, S.Y.: Dynamic recrystallization of Al alloy 7075 in turning. J. Manuf. Sci. Eng. 138(7),
071010 (2016)
2. Driemeier, L., Brünig, M., Micheli, G., Alves, M.: Experiments on stress-triaxiality dependence of material behavior of aluminum alloys.
Mech. Mater. 42(2), 207–217 (2010)
3. Teimouri, R., Amini, S., Mohagheghian, N.: Experimental study and empirical analysis on effect of ultrasonic vibration during rotary turning
of aluminum 7075 aerospace alloy. J. Manuf. Process. 26, 1–12 (2017)
4. Starke Jr., E.A., Staley, J.T.: Application of modern aluminium alloys to aircraft. In: Fundamentals of Aluminium Metallurgy, pp. 747–783.
Woodhead Publishing, Oxford (2011)
5. Higashi, K., Mukai, T., Kaizu, K., Tsuchida, S., Tanimura, S.: Strain rate dependence on mechanical properties in some commercial aluminum
alloys. J. Phys. IV. 1(C3), C3-341 (1991)
6. Oosterkamp, L.D., Ivankovic, A., Venizelos, G.: High strain rate properties of selected aluminium alloys. Mater. Sci. Eng. A. 278(1–2),
225–235 (2000)
7. Reyes, A., Hopperstad, O.S., Lademo, O.G., Langseth, M.: Modeling of textured aluminum alloys used in a bumper system: material tests and
characterization. Comput. Mater. Sci. 37(3), 246–268 (2006)
8. Børvik, T., Clausen, A.H., Eriksson, M., Berstad, T., Hopperstad, O.S., Langseth, M.: Experimental and numerical study on the perforation of
AA6005-T6 panels. Int. J. Impact Eng. 32(1–4), 35–64 (2005)
9. Singh, N.K., Singha, M.K., Cadoni, E., Gupta, N.K.: Strain rate sensitivity of an aluminium alloy under compressive loads. In: Advanced
Materials Research, vol. 548, pp. 169–173. Trans Tech Publications Ltd, Zurich (2012)
10. Singh, N.K., Cadoni, E., Singha, M.K., Gupta, N.K.: Dynamic tensile and compressive behaviors of mild steel at wide range of strain rates.
J. Eng. Mech. 139(9), 1197–1206 (2013)
11. Chen, Y., Clausen, A.H., Hopperstad, O.S., Langseth, M.: Stress–strain behaviour of aluminium alloys at a wide range of strain rates. Int.
J. Solids Struct. 46(21), 3825–3835 (2009)
12. Johnson, G.R.: A constitutive model and data for materials subjected to large strains, high strain rates, and high temperatures. In: Proc. 7th Inf.
Sympo. Ballistics, pp. 541–547 (1983)
13. Engineers and Builders: Standard tools and techniques for dynamic characterization of materials. Design Book (2015). http://www.engineersandbuilders.com
0.00
0.02
0.04
0.06
0.08
0.10
300
350
400
450
500
550
600
)
a
P
M
(
s
s
e
r
t
S
e
u
r
T
True Plastic Strain
True plastic stress (10
-4 s -1 )
JC fit (10
-4 s -1 )
True plastic stress (10
-1 s -1 )
JC fit (10
-1 s -1 )
Fig. 4.10 Comparison
between the experimental
result and Johnson-Cook
Model perdition
4 Constitutive Behavior of AA7475-T7351 at High Strain Rate and Elevated Temperatures