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Date: 06/10/02 at 7:32 AM
Posted by: Jostein Røyset
E-mail: Jostein.Royset@hydro.com

In Reply to: 7020 alloy with scandium posted by Marco Fattori on 06/01/02 at 1:47 PM:

Marco,

I've been looking through the papers I have collected about Sc in 7xxx alloys, but it seems that no investigations about the effects of Sc in 7020 has been published so far. Most of the reported work is on somewhat stronger alloys, like the AA alloys 7010 and 7050 and the russian alloys 1970, 1975, 1981 and 1987.

Here is a list of papers that may be relevant if you want to predict the changes in behavior that may take place when you add Sc to 7020 or other 7xxx alloys:

C.E. Cross and Ø. Grong:
Microstructure and Mechanical Properties of Simulated Al-Mg-Zn Weld Metal Modified with Sc and Zr,
Proceedings of the 6th International Conference on Aluminum Alloys, July 5-10 1998, Toyohashi, Japan pp 1441-1446

V.I. Elagin et al.:
Influence of Scandium on the Structure and Properties of Al-Zn-Mg Alloys,
Russ. Metall. (4) (1983) pp 143-146

V.I. Elagin et al.:
Effect of Scandium on the Structure and Properties of Alloy Al-5.5Zn- 2.0Mg,
Met. Sci. & Heat Tr. (7) (1994) pp 375-380

I.N. Fridlyander et al.:
Grain Structure and Superplasticity of High Strength Al-Zn-Mg-Cu Alloys with Different Minor Additions,
Mater. Sci. Forum 170-172 (1994) pp 345-349

J.N. Fridlyander, O.G. Senatorova:
Development and Application of High-Strength Al-Zn-Mg-Cu Alloys,
Mater. Sci. Forum 217-222 (1996) pp 1813-1818

A.Ya. Ishchenko, V.O. Chapor and M.R. Yavorskaya:
Effect of Scandium Additions on Weldability of Alloy of Al-Zn-Mg System,
Paton Weld. J. (11) (2000) pp 15-17

L.I. Kaigorodova et al.:
Effect of Small Additions of Sc and Zr on the Structure and Mechanical Properties of an Al-Zn-Mg-Cu Alloy,
Phys. Met. Metall. 81 (1996) pp 513-519

L.I. Kaigorodova, I.G. Brodova, E.I. Sel'nikhina, and O.R. Shamsheeva:
Effect of Small Additions of Sc and Zr on the Fine Structure of an Al–Zn–Mg–Cu Alloy after Rapid Solidification and High-Temperature Annealing,
Phys. Met. Metall. 90 (3) (2000) pp 281-287

G.M. Khan et al.:
Influence of Scandium on Structure and Superplasticity of Al-Zn-Mg-Sc-Zr Alloys,
Tsvetnye Metally 34 (11) (1993) pp 43-45

J. Liu, D.J. Chakrabarti:
Grain Structure and Microtexture Evolution During Superplastic Forming of a High Strength Al-Zn-Mg-Cu Alloy,
Acta Mater. 44 (1996) pp 4647-4661

M.G. Mousavi, C.E. Cross and Ø. Grong:
Effect of Scandium and Titanium-Boron on Grain Refinement and Hot Cracking of Aluminium Alloy 7108,
Sci. Technol. Weld. Joining 4 (1999) pp 381-388

A.K. Mukhopadhyay, G.M. Reddy, K.S. Prasad, S.V. Kamat, A. Dutta and C. Mondal:
Influence of Scandium Additions on the Microstructure and Properties of AA 7010 Alloy Sheets,
Advances in the Metallurgy of Aluminum Alloys, Proc. James T Staley Honorary Symposium on Aluminum Alloys ed. M. Tiryakioglu, ASM (2001) pp 63-71

Y.W. Riddle and T.H. Sanders, Jr.:
Recrystallization Performance of AA7050 Varied with Sc and Zr,
Mater. Sci. Forum 331-337 (2000) pp 799-803

E.I. Selnikhina, L.I. Kaigorodova and A.A. Tkachenko:
The Formation of the Grain Boundary Structure, Aging Behavior and Mechanical Properties of Al-Zn-Mg-Cu Alloy,
Mater. Sci. Forum 294-296 (1999) pp 707-710

O.G. Senatorova, A.N. Uksusnikov, S.F. Lehoshina, I.N. Fridlyander and I.P. Zhegina:
Influence of Different Minor Additions on Structure and Properties of High-Strength Al-Zn-Mg-Cu Alloy Sheets,
Mater. Sci. Forum 331-337 (2000) pp 1249-1253

Y.L. Wu, F.H. Froes, C.G. Li and J. Liu:
Effects of Microalloying with Sc, Ni and Ce on the Behavior of Ingot Aluminum Alloy C912 (Al-Zn-Mg-Cu),
Synthesis/Processing of Lightweigth Metallic Materials II, Feb. 9-13 1997 Orlando, FL, USA pp 73-81

Y.-L. Wu, F.H. Froes, C. Li and A. Alvarez:
Microalloying of Sc, Ni and Ce in an Advanced Al-Zn-Mg-Cu Alloy,
Metall. Mater. Trans. A 30A (1999) pp 1017-1024

Regards,
Jostein Røyset

Follow Ups:

  Re: 7020 alloy with scandium SHAHAB AGHILI   Posted at: 04/17/03 (0)

  Re: 7020 alloy with scandium svs   Posted at: 03/25/03 (0)

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