Effects of an electric field applied during the solution heat treatment of the Al–Mg –Si–Cu alloy AA6111 on the subsequent natural aging kinetics and tensile properties
-
Abstract
The effects of an external dc electric field of 0 – 5 kV/cm, applied at 475 – 550 °C during solution heat treatment (SHT) to AA6111, on the subsequent natural aging kinetics and volume fraction of precipitated clusters were determined employing resistivity. The field increased the asquenched resistivity and that during natural aging, the effect being significant from 0 to ≈0.5 kV/cm and increasing only slightly, if at all, thereafter. An Avrami-type analysis of the natural aging kinetics gave n = 0.59 ± 0.2 and k = (1.2 ± 0.8) · 10– 2 min –1, relatively independent of SHT temperature and field strength. The field increased the volume fraction of precipitated clusters which occurred during natural aging. This was attributed to the increase in solubility during SHT produced by the field. Tensile properties equivalent to those obtained by the SHT at 550 °C without a field were obtained at 500 °C with a field of only 200 V/cm, representing a reduction of 50 °C in the nominal SHT temperature.
References
[1] H. Conrad, K. Jung: Z. Metallkd. 95 (2004) 352.10.3139/146.017965Search in Google Scholar
[2] K. Jung, H. Conrad: Z. Metallkd. 97 (2006) 35.Search in Google Scholar
[3] S. Esmaeili, D.J. Lloyd, W.J. Poole: Acta Mater. 51 (2003) 2243.10.1016/S1359-6454(03)00028-4Search in Google Scholar
[4] W.A. Johnson, R.F. Mehl: Trans. AIME 135 (1939) 416.Search in Google Scholar
[5] M.V. Avrami: J. Chem. Phys. 7 (1939) 1103.10.1063/1.1750380Search in Google Scholar
[6] A.N. Kolmogorov: AN. Izv. Akad. Nauk. USSR. Ser Mathemat. 1 (1937) 355.Search in Google Scholar
[7] D.W. Pashley, J. Rhodes, A. Sendorek: J. Inst. Met. 94 (1966).Search in Google Scholar
[8] G.A. Edwards, K. Stiller, G. Dunlop, M. Couper: Acta Mater. 46 (1998) 3893.10.1016/S1359-6454(98)00059-7Search in Google Scholar
[9] A. Perovic, D. Perovi, G.Weatherly, D.J. Lloyd: Scripta Mater. 41 (1999) 703.10.1016/S1359-6462(99)00204-3Search in Google Scholar
[10] S. Esmaeli, D.S. Lloyd, W.J. Poole: Acta Mater. 51 (2003) 346.Search in Google Scholar
© 2006 Carl Hanser Verlag, München
Articles in the same Issue
- Contents
- Phase separation in Si–(B)–C–N polymer-derived ceramics
- Solidification curves for commercial Mg alloys obtained from heat-transfer modeled DTA experiments
- Thermodynamic assessment of the Mg–Nd system
- Solid-state reaction in Ni/Si multilayered films, characterized by magneto-optical and optical spectroscopies
- Phase diagram of the Co–Cu–Ti system at 850 °C
- Effects of an electric field applied during the solution heat treatment of the Al–Mg –Si–Cu alloy AA6111 on the subsequent natural aging kinetics and tensile properties
- Fabrication and electrical sliding wear of graphitic Cu–Cr–Zr matrix composites
- Further results on creep behaviour of sand-cast Mg–2.8Nd–0.8Zn–0.5Zr–0.3Gd alloy at 0.56 to 0.61Tm under stresses 40 to 90 MPa
- On the creep resistance in cast Ni-base superalloys
- Formation, stability, and presence of magnesium nitride in magnesium recycling processes
- From waste to high strength alloy – recycling of magnesium chips
- Sigma phase formation and its effect on mechanical properties in the corrosion-resistant superalloy K44
- Personal/Personelles
- Press / Presse
- Contents
- Articles Basic
- Phase separation in Si–(B)–C–N polymer-derived ceramics
- Solidification curves for commercial Mg alloys obtained from heat-transfer modeled DTA experiments
- Thermodynamic assessment of the Mg–Nd system
- Solid-state reaction in Ni/Si multilayered films, characterized by magneto-optical and optical spectroscopies
- Phase diagram of the Co–Cu–Ti system at 850 °C
- Effects of an electric field applied during the solution heat treatment of the Al–Mg –Si–Cu alloy AA6111 on the subsequent natural aging kinetics and tensile properties
- Articles Applied
- Fabrication and electrical sliding wear of graphitic Cu–Cr–Zr matrix composites
- Further results on creep behaviour of sand-cast Mg–2.8Nd–0.8Zn–0.5Zr–0.3Gd alloy at 0.56 to 0.61Tm under stresses 40 to 90 MPa
- On the creep resistance in cast Ni-base superalloys
- Formation, stability, and presence of magnesium nitride in magnesium recycling processes
- From waste to high strength alloy – recycling of magnesium chips
- Sigma phase formation and its effect on mechanical properties in the corrosion-resistant superalloy K44
- Notifications/Mitteilungen
- Personal/Personelles
- Press / Presse
Articles in the same Issue
- Contents
- Phase separation in Si–(B)–C–N polymer-derived ceramics
- Solidification curves for commercial Mg alloys obtained from heat-transfer modeled DTA experiments
- Thermodynamic assessment of the Mg–Nd system
- Solid-state reaction in Ni/Si multilayered films, characterized by magneto-optical and optical spectroscopies
- Phase diagram of the Co–Cu–Ti system at 850 °C
- Effects of an electric field applied during the solution heat treatment of the Al–Mg –Si–Cu alloy AA6111 on the subsequent natural aging kinetics and tensile properties
- Fabrication and electrical sliding wear of graphitic Cu–Cr–Zr matrix composites
- Further results on creep behaviour of sand-cast Mg–2.8Nd–0.8Zn–0.5Zr–0.3Gd alloy at 0.56 to 0.61Tm under stresses 40 to 90 MPa
- On the creep resistance in cast Ni-base superalloys
- Formation, stability, and presence of magnesium nitride in magnesium recycling processes
- From waste to high strength alloy – recycling of magnesium chips
- Sigma phase formation and its effect on mechanical properties in the corrosion-resistant superalloy K44
- Personal/Personelles
- Press / Presse
- Contents
- Articles Basic
- Phase separation in Si–(B)–C–N polymer-derived ceramics
- Solidification curves for commercial Mg alloys obtained from heat-transfer modeled DTA experiments
- Thermodynamic assessment of the Mg–Nd system
- Solid-state reaction in Ni/Si multilayered films, characterized by magneto-optical and optical spectroscopies
- Phase diagram of the Co–Cu–Ti system at 850 °C
- Effects of an electric field applied during the solution heat treatment of the Al–Mg –Si–Cu alloy AA6111 on the subsequent natural aging kinetics and tensile properties
- Articles Applied
- Fabrication and electrical sliding wear of graphitic Cu–Cr–Zr matrix composites
- Further results on creep behaviour of sand-cast Mg–2.8Nd–0.8Zn–0.5Zr–0.3Gd alloy at 0.56 to 0.61Tm under stresses 40 to 90 MPa
- On the creep resistance in cast Ni-base superalloys
- Formation, stability, and presence of magnesium nitride in magnesium recycling processes
- From waste to high strength alloy – recycling of magnesium chips
- Sigma phase formation and its effect on mechanical properties in the corrosion-resistant superalloy K44
- Notifications/Mitteilungen
- Personal/Personelles
- Press / Presse
