Effect of a plastic deformation on the Guinier-Preston zones growth in Al-5at%Ag alloy

Sabah Senouci; Mouhyddine Kadi-Hanifi; Azzeddine Abderrahmane Raho; Sabah Senouci; Mouhyddine Kadi-Hanifi; Azzeddine Abderrahmane Raho

doi:10.3934/matersci.2017.1.16

AIMS Materials Science

2017, Volume 4, Issue 1: 16-26. doi: 10.3934/matersci.2017.1.16

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Research article

Effect of a plastic deformation on the Guinier-Preston zones growth in Al-5at%Ag alloy

Solids solutions laboratory, physics faculty USTHB, BP 32, El-Alia, Algiers, Algeria

Received: 14 October 2016 Accepted: 02 December 2016 Published: 15 December 2017

The formation of the Guinier-Preston zones in aluminium alloys is closely linked with the excess vacancies. A plastic deformation exerts an influence on the Guinier-Preston zones precipitation. As well as in the non deformed alloy and in the deformed alloy, the growth kinetics obeys to the JMAK law of the growth controlled by the solute atoms diffusion. However, during the GP zones growth, two stages are observed. During the first one, the plastic deformation slows down the Guinier-Preston zones formation and during the second stage, the plastic deformation accelerates their formation. The plastic deformation promotes the formation of the metastable γ’ phase.
- precipitation,
- diffusion,
- dislocations,
- vacancies,
- hardening
Citation: Sabah Senouci, Mouhyddine Kadi-Hanifi, Azzeddine Abderrahmane Raho. Effect of a plastic deformation on the Guinier-Preston zones growth in Al-5at%Ag alloy[J]. AIMS Materials Science, 2017, 4(1): 16-26. doi: 10.3934/matersci.2017.1.16

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Abstract

The formation of the Guinier-Preston zones in aluminium alloys is closely linked with the excess vacancies. A plastic deformation exerts an influence on the Guinier-Preston zones precipitation. As well as in the non deformed alloy and in the deformed alloy, the growth kinetics obeys to the JMAK law of the growth controlled by the solute atoms diffusion. However, during the GP zones growth, two stages are observed. During the first one, the plastic deformation slows down the Guinier-Preston zones formation and during the second stage, the plastic deformation accelerates their formation. The plastic deformation promotes the formation of the metastable γ’ phase.

References

[1]	Inoke K, Kaneko K, Weyland M, et al. (2006) Severe local strain and the plastic deformation of Guinier Preston zones in the Al-Ag system revealed by three-dimensional electron tomography. Acta Mater 54: 2957–2963. doi: 10.1016/j.actamat.2006.02.029
[2]	El-Khalek AMA (2008) Transformation characteristics of Al-Ag and Al-Ag-Ti alloys. J Alloy Compd 459: 281–285. doi: 10.1016/j.jallcom.2007.05.055
[3]	Dubey PA, Schönfeld B, Kostorz G (1991) Shape and internal structure of Guinier-Preston zones in Al-Ag. Acta Metall Mater 39: 1161–1170. doi: 10.1016/0956-7151(91)90204-E
[4]	Schönfeld B, Malik A, Kostorz G, et al. (1997) Guinier-Preston zones in Al-rich Al-Cu and Al-Ag single crystals. Physica B 234: 983–985.
[5]	Federighi T (1958) Quenched-in vacancies and rate of formation of zones in aluminum alloys. Acta Metall 6: 379–381. doi: 10.1016/0001-6160(58)90078-6
[6]	Guo Z, Sha W (2005) Quantification of precipitate fraction in Al-Si-Cu alloys. Mater Sci Eng A 392: 449–452. doi: 10.1016/j.msea.2004.09.020
[7]	Waterloo G, Hansen V, Gjønnes J, et al. (2001) Effect of predeformation and preaging at room temperature in Al-Zn-Mg-(Cu, Zr) alloys. Mater Sci Eng A 303: 226–233. doi: 10.1016/S0921-5093(00)01883-9
[8]	Wang G, Sun Q, Feng L, et al. (2007) Influence of Cu content on ageing behavior of AlSiMgCu cast alloys. Mater Design 28: 1001–1005. doi: 10.1016/j.matdes.2005.11.015
[9]	Novelo-Peralta O, González G, Lara-Rodríguez GA (2007) Characterization of precipitation in Al-Mg-Cu alloys by X-ray diffraction peak broadening analysis. Mater Charact 59: 773–780.
[10]	Ahmadi S, Arabi H, Nouri S, et al. (2009) Mechanisms of precipitates formation in an Al-Cu-Li-Zr alloy using DSC technique and electrical resistance measurements. Iran J Mater Sci Eng 6: 15–20.
[11]	Anjabin N, Taheri K (2010) The effect of aging treatment on mechanical properties of AA6082 alloy: modelling experiment. Iran J Mater Sci Eng 7: 14–21.
[12]	Federighi T, Thomas G (1962) The interaction between vacancies and zones and the kinetics of pre-precipitation in Al-rich alloys. Philos Mag 7: 127–131. doi: 10.1080/14786436208201864
[13]	Girifalco LA, Herman H (1965) A model for the growth of Guinier-Preston zones-the vacancy pump. Acta Metall 13: 583–590. doi: 10.1016/0001-6160(65)90120-3
[14]	Yassar RS, Field DP, Weiland H (2005) The effect of cold deformation on the kinetics of the β″ precipitates in an Al-Mg-Si alloy. Metall Mater Trans A 36: 2059–2065. doi: 10.1007/s11661-005-0326-6
[15]	Martin JW (1968) Precipitation Hardening, New York: Pergamon Press.
[16]	Porter DA, Easterling KE, Sherif M (1992) Phase transformations in metals and alloys, 2rd Ed, Chapman & Hall.
[17]	Gubicza J, Schiller I, Chinh NQ, et al. (2007) The effect of severe plastic deformation on precipitation in supersaturated Al-Zn-Mg alloys. Mater Sci Eng A 460–461: 77–85.
[18]	Tekmen C, Cocen U (2003) Role of cold work and SiC volume fraction on accelerated age hardening behavior of Al-Si-Mg/Si ccomposites. J Mater Sci Lett 22: 1247–1249. doi: 10.1023/A:1025497816387
[19]	Naudon A, Caisso J (1974) Etude de la lacune de miscibilité métastable et de la structure cristallographique des zones GP dans les alliages aluminum-argent. J Appl Crystallogr 7: 25–36. doi: 10.1107/S0021889874008648
[20]	Baur R, Gerold V (1962) The existence of a metastable miscibility gap in aluminium-silver alloys. Acta Metall 10: 637–645. doi: 10.1016/0001-6160(62)90053-6
[21]	Hillert M (1962) Colloq. Int. CNRS Paris 118: 43.
[22]	Osamura K, Nakamura T, Kobayashi A, et al. (1987) Chemical composition of GP zones in Al-Ag alloys. Scripta Metall 21: 255–258. doi: 10.1016/0036-9748(87)90208-0
[23]	Johnson WA, Mehl RF (1939) Reaction kinetics in processes of nucleation and growth. Trans Amer Inst Mining (Metal) Engrs 135: 416–458.
[24]	Avrami M (1941) Kinetics of phase change. III. Granulation, Phase Change and Microstructure. J Chem Phys 9: 177–184.
[25]	Kolmogorov AN (1937) On the statistical theory of the crystallization of metals. Bull Acad Sci USSR, Math Ser 1: 355–359.
[26]	Doherty RD (1996) Diffusive phase transformations in the solid state, in Physical Metallurgy 4^th edition, eds., Cahn RW, Hassen P, North Holland, Amsterdam, 2: 1364–1505.
[27]	Christian JW (1965) The theory of phase transformations in metals and alloys, New York: Pergamon Press.
[28]	Esmaeili S, Lloyd DJ, Poole WJ (2003) A yield strength model for the Al-Mg-Si-Cu alloy AA6111. Acta Mater 51: 2243–2257. doi: 10.1016/S1359-6454(03)00028-4
[29]	Merlin J, Merle P (1978) Analistic phenomena and structural state in aluminium silver alloys. Scripta Metall 12: 227–232.

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