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In situ elevated temperature transmission electron microscopy of sensitized aluminum–magnesium alloy treated by ultrasonic impact treatment

Published online by Cambridge University Press:  15 July 2014

Kim N. Tran ,
Lourdes Salamanca-Riba  and
Wen-An Chiou
Kim N. Tran*
Affiliation:
Survivability, Structures, and Materials, Naval Surface Warfare Center, Carderock Division, West Bethesda, Maryland 20817, USA
Lourdes Salamanca-Riba
Affiliation:
Materials Science and Engineering Department, University of Maryland, College Park, Maryland 20742, USA
Wen-An Chiou
Affiliation:
Nanoscale Imaging, Spectroscopy, and Properties Laboratory, NanoCenter, University of Maryland, Maryland 20742, USA
*
a) Address all correspondence to this author. e-mail: [email protected]
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Abstract

In situ transmission electron microscopy (TEM) analysis shows that submicrometer grains formed by ultrasonic impact treatment (UIT) of sensitized 5456-H116 Al–Mg alloy products are thermally stable up to ∼300 °C which is consistent with previous research on annealing of heavily deformed Al–Mg. Grain growth occurs above 300 °C with significant growth at ∼400 °C. Grain growth continued upon heating to 450 °C; the grain size did not significantly increase when the temperature was held at 450 °C long term. In situ TEM revealed a duplex microstructure that was not fully recrystallized. The activation energy for grain growth was determined to be ∼32 kJ/mol. The submicrometer grains produced by UIT offer improved resistance to fatigue and corrosion. The majority of sensitized 5456-H116 failures are sensitive to the material's surface properties and operational service temperature; the stability of the submicrometer grains in the UIT Al–Mg makes them more stable in practical operations where increase in the material temperature is an issue.

Keywords

Alannealingtransmission electron microscopy
Type
Articles
Information
Journal of Materials Research , Volume 29 , Issue 13 , 14 July 2014 , pp. 1456 - 1462
Copyright
Copyright © Materials Research Society 2014 

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References

REFERENCES

Gubicza, J., Chinh, N.Q., Csanádi, T., Langdon, T.G., and Ungár, T.: Microstructure and strength of severely deformed fcc metals. Mater. Sci. Eng., A 462, 86 (2007).Google Scholar
Dai, K., Villegas, J., and Shaw, L.: An analytical model of the surface roughness of an aluminum alloy treated with a surface nanocrystallization and hardening process. Scr. Mater. 52, 259 (2005).Google Scholar
An, X., Rodopoulos, C.A., Statnikov, E.S., Vitazev, V.N., and Korolkov, O.V.: Study of the surface nanocrystallization induced by the esonix ultrasonic impact treatment on the near-surface of 2024-T351 aluminum alloy. J. Mater. Eng. Perform. 15(3), 355–364 (2006).Google Scholar
Statnikov, E.S., Korolkov, O.V., and Vityazev, V.N.: Physics and mechanism of ultrasonic impact. Ultrasonics 44, e533 (2006).Google Scholar
Liao, M., Chen, W.R., and Bellinger, N.C.: Effects of ultrasonic impact treatment on fatigue behavior of naturally exfoliated aluminum alloys. Int. J. Fatigue 30, 717 (2008).Google Scholar
You-Li, M., Xie, J., and Hong, Y.: Study on mechanical properties of nanocrystal surface layer of an aluminum alloy. Int. J. Nonlinear Sci. Numer. Simul. 3, 491 (2002).Google Scholar
Sato, M., Tsuji, N., Minamino, Y., and Koizumi, Y.: Fabrication of surface nanocrystalline aluminum alloys. Mater. Sci. Forum 426–432, 2753 (2003).Google Scholar
Sato, M., Tsuji, N., Minamino, Y., and Koizumi, Y.: Formation of nanocrystalline surface layers in various metallic materials in near surface severe plastic deformation. Sci. Technol. Adv. Mater. 5, 145 (2004).CrossRefGoogle Scholar
Neishi, K., Higashino, A., Miyahara, Y., Nakamura, K., Kaneko, K., Nakagaki, M., and Horita, Z.: Grain refinement of commercial Al-Mg alloy using severe torsion straining process. Mater. Sci. Forum 503–504, 955 (2006).Google Scholar
May, J., Dinkel, M., Amberger, D., Hèoppel, H.W., and Gèoken, M.: Mechanical properties, dislocation density and grain structure of ultrafine-grained aluminum and aluminum alloys. Metall. Mater. Trans. A 38A, 1941 (2007).Google Scholar
Horita, Z., Funjinami, T., Nemoto, M., and Langdon, T.G.: Equal-channel angular pressing of commercial aluminum alloys: Grain refinement, thermal stability, and tensile properties. Metall. Mater. Trans. A 31A, 691 (2000).Google Scholar
Liu, M., Roven, H.J., Liu, X., Murashkin, M., Valiev, R.Z., Ungár, T., and Balogh, L.: Grain refinement in nanostructured Al-Mg alloys subjected to high pressure torsion. J. Mater. Sci. 45, 4659 (2010).Google Scholar
Wu, X., Tao, N., Hong, Y., Xu, B., Lu, J., and Lu, K.: Microstructure and evolution of mechanically-induced ultrafine grain in surface layer of AL-alloy subjected to USSP. Acta Mater. 50, 2075 (2002).Google Scholar
ASTM B928: (American Society for Testing and Materials, West Conshohocken, PA, 2009).Google Scholar
Oguocha, I.N.A., Adigun, O.J., and Yannacopoulos, S.: Effect of sensitization heat treatment on properties of Al-Mg alloy AA5083-H116. J. Mater. Sci. 43, 4208 (2008).Google Scholar
Searles, J.L., Gouma, P.I., and Buchheit, R.G.: Stress corrosion cracking of sensitized AA5083 (Al-4.5Mg-1.0Mn). Mater. Sci. Forum 396–402, 1437 (2002).Google Scholar
Davenport, A., Yuan, Y., Ambat, R., Connolly, B., Strangwood, M., Afseth, A., and Scamans, G.: Intergranular corrosion and stress corrosion cracking of sensitized AA5182. Mater. Sci. Forum 519–521, 641 (2006).CrossRefGoogle Scholar
Tran, K.N. and Salamanca-Riba, L.: Microstructural evolution of severely plastically deformed sensitized aluminum 5456-H116 treated by ultrasonic impact treatment. Adv. Eng. Mater. 15, 1105, (2013).Google Scholar
Morris, D.G. and Munoz-Morris, M.A.: Microstructure of severely deformed Al-3Mg and its evolution during annealing. Acta Mater. 50, 4047 (2002).Google Scholar
ASTM G67: (American Society for Testing and Materials, West Conshohocken, PA, 2004).Google Scholar
Wang, J., Iwahashi, Y., Horita, Z., Furukawa, M., Nemoto, M., Valiev, R.Z., and Langdon, T.G.: An investigation of microstructural stability in an Al-Mg alloy with submicrometer grain size. Acta Mater. 44, 2973 (1996).CrossRefGoogle Scholar
Reed-Hill, R. and Abbaschian, R.: Physical Metallurgy Principles, 3rd ed. (PWS Publishing Co., Boston, MA, 1994), pp. 259.Google Scholar
Godiksen, R., Schmidt, S., and Jensen, D.J.: Effects of distribution of growth rates on recrystallization kinetics and microstructure. Scr. Mater. 57, 345 (2007).Google Scholar
Koizumi, M., Kohara, S., and Inagaki, H.: Kinetics of recrystallization in Al-Mg alloys. Zeitschrift fur Metallkunde 91, 460 (2000).Google Scholar
Ryum, N. and Embury, J.D.: A comment on the recrystallization behavior of Al-Mg alloys. Scand. J. Metall. 11, 51 (1982).Google Scholar
Furukawa, M., Horita, Z., Nemoto, M., Valiev, R.Z., and Langdon, T.G.: Microhardness measurements and the Hall-Petch relationship in an Al-Mg alloy with submicrometer grain size. Acta Mater. 44, 4619 (1996).Google Scholar
Liu, M., Roven, H., Murashkin, M., and Valiev, R.Z.: Structural characterization by high-resolution electron microscopy of an Al-Mg alloy processed by high-pressure torsion. Mater. Sci. Eng., A 503, 122 (2009).Google Scholar
Horita, Z., Smith, D., Furukawa, M., Nemoto, M., Valiev, R.Z., and Langdon, T.G.: An investigation of grain boundaries in submicrometer-grained Al-Mg solid solution alloys using high-resolution electron microscopy. J. Mater. Res. 11, 1880 (1996).Google Scholar
Kubota, M.: Observation of beta phase particles in an isothermally aged Al-10mass%Mg alloy with and without 0.5mass%Ag. Mater. Trans. 49, 235 (2008).Google Scholar