Hot deformation mechanisms of a solution-treated Al-Li-Cu-Mg-Zr alloy

Avramovic-Cingara, G.; Perović, D. D.; McQueen, H.J.

doi:10.1007/bf02595440

Cited by 48 publications

(16 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The values of activation energy of Al-3.7Cu-1.7Li-0.8Zn-0.55Mg-0.3Mn-0.14Zr varied from 228 to 239 kJ/mol for different strains [25]. The value of Q was found to be about 282 kJ/mol for the 8090 alloy and 287 kJ/mol for 8091 [26]. The existent precipitation of T2 and T1 phases and composite EBSD analysis shows that dynamic recovery is the main dynamic soften mechanism of 2060 alloy and no DRX grains are found.…”

Section: Discussionmentioning

confidence: 89%

Hot deformation behavior of 2060 alloy

Zheng

Nie

et al. 2015

Journal of Alloys and Compounds

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 89%

Hot deformation behavior of 2060 alloy

Zheng

Nie

et al. 2015

Journal of Alloys and Compounds

View full text Add to dashboard Cite

“…[36] For a number of aluminum alloys, the Zener-Hollomon parameter and the subgrain diameter, d, are related in the following manner: [37][38][39][40][41][42] …”

Section: Estimated Strain Rates During Spot Weldingmentioning

confidence: 99%

Strain Rates and Grain Growth in Al 5754 and Al 6061 Friction Stir Spot Welds

Gerlich¹,

Yamamoto²,

North³

2007

Metall Mater Trans A

View full text Add to dashboard Cite

The stir zone temperature and microstructures are compared in friction stir spot welds produced in Al 5754 and Al 6061 alloys. Electron backscattered diffraction was used to determine the relationship between tool rotation speed during welding and final stir zone grain size. Comparison of the grain sizes in rapidly quenched welds with those in air-cooled joints confirmed that grain growth occurred only in Al 6061 spot welds. There was no evidence of abnormal grain growth in the stir zones of Al 6061 welds; the final grain size could be represented using an Arrhenius equation. The strain rates during welding were determined by incorporating the stir zone temperature and average subgrain sizes in quenched spot welds in the Zener-Hollomon relation. When the tool rotation speed increased from 750 to 3000 RPM, the strain rate values ranged from 180 to 497 s -1 in Al 5754 spot welds and from 55 to 395 s -1 in Al 6061 spot welds. It is suggested that a no-slip boundary condition may be appropriate during numerical modeling of Al 5754 and 6061 friction stir spot welding. This is not the case during Al 7075, Al 2024, and Mg-alloy AZ91 spot welding because spontaneous melting facilitates slippage at the tool contact interface.

show abstract

“…The role of Zr lies essentially in inhibiting the recrystallization through the precipitation of fine spherical and coherent Al 3 Zr particles. [17][18][19][20][21][22][23][24] Small Zr addition promotes a decomposition of the supersaturated solid solution of Al responsible for the formation of a metastable L1 2 Al 3 Zr phase. Prolonged heat treatment transforms this phase in the equilibrium DO 2 Al 3 Zr phase.…”

Section: Introductionmentioning

confidence: 99%

Microstructural characterization of secondary-phase particles in a hot-deformed Al-Cu-Mg-Zr alloy

Cabibbo

Spigarelli

Evangelìsta

2004

Metall Mater Trans A

View full text Add to dashboard Cite

Torsion tests, on a 2014 ϩ 0.13Zr alloy, were performed at temperatures in the range 573 to 773 K under strain rates ranging from 10 Ϫ3 to 10 s Ϫ1 . Transmission electron microscopy (TEM) inspection was performed in order to establish the role of the hot deformation on the hardening second-phase particles. The pinning effect of Al 3 Zr particles was also investigated. At the testing temperatures, the Al 3 Zr particles were stable, and no significant statistic changes, in terms of density and mean size, occurred during the tests. Small Al 3 Zr dispersoid particles inhibit recrystallization by pinning the grain and subgrain boundaries during hot deformation. Yet, they are particularly resistant to dislocation shear microstructure mechanism. Grains were elongated and contained a large number of sub-grains a few microns in width.

show abstract

Hot deformation mechanisms of a solution-treated Al-Li-Cu-Mg-Zr alloy

Cited by 48 publications

References 22 publications

Hot deformation behavior of 2060 alloy

Hot deformation behavior of 2060 alloy

Strain Rates and Grain Growth in Al 5754 and Al 6061 Friction Stir Spot Welds

Microstructural characterization of secondary-phase particles in a hot-deformed Al-Cu-Mg-Zr alloy

Contact Info

Product

Resources

About