Effect of alloying with transition metals on the aging of anomalously supersaturated solid solution of Al–Mg alloys

The Mg-vacancy binding free enthalpy of Al-Cr solid solution alloys with Mg addition was calculated by electrical resistivity measurements. The obtained value is lower than that obtained for dilute Al-Mg alloys with almost the same Mg content and may be attributed to the diffusion of Mg.

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Formation of Nanostructure during High-Pressure Torsion of Al-Zn, Al-Mg and Al-Zn-Mg Alloys

Defect and Diffusion Forum ◽

10.4028/www.scientific.net/ddf.237-240.739 ◽

2005 ◽

Vol 237-240 ◽

pp. 739-744 ◽

Cited By ~ 13

Author(s):

A.A. Mazilkin ◽

Olga A. Kogtenkova ◽

Boris B. Straumal ◽

Ruslan Valiev ◽

B. Baretzky

Keyword(s):

Solid Solution ◽

High Pressure ◽

Equilibrium State ◽

Room Temperature ◽

Supersaturated Solid Solution ◽

High Pressure Torsion ◽

Mg Alloys ◽

Supersaturated Solid Solutions ◽

Before And After ◽

Second Phases

Structure and phase composition of binary Al–Zn, Al–Mg and ternary Al–Zn–Mg alloys were studied before and after high pressure torsion (HPT) with shear strain 300. The size of (Al) grains and crystals of reinforcing second phases decreases drastically after HPT reaching nanometer range. As a result of HPT, the Zn-rich (Al) supersaturated solid solution decomposes completely and reaches the equilibrium state corresponding to room temperature. The decomposition is less pronounced for Al–Mg and Al–Zn–Mg alloys. We conclude that the severe plastic deformation of supersaturated solid solutions can be considered as a balance between deformation-induced disordering and deformation-accelerated diffusion towards the equilibrium state.

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A unified description of solid solution creep strengthening in Al–Mg alloys

Materials Science and Engineering A ◽

10.1016/j.msea.2012.04.080 ◽

2012 ◽

Vol 550 ◽

pp. 320-324 ◽

Cited By ~ 11

Author(s):

R. Fernández ◽

G. González-Doncel

Keyword(s):

Solid Solution ◽

Mg Alloys ◽

Unified Description ◽

Al Mg Alloys

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Direct Observation of Monolayer Zones in Al-wt 4% Cu

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100178823 ◽

1990 ◽

Vol 48 (1) ◽

pp. 14-15

Author(s):

B. Jouffrey ◽

D. Dorignac ◽

A. Bourret

Keyword(s):

Solid Solution ◽

Synchrotron Radiation ◽

Direct Observation ◽

Supersaturated Solid Solution ◽

Original Model ◽

X Ray ◽

Image Position

Since the early works on GP zones and the model independently proposed by Preston and Guinier on the first steps of precipitation in supersaturated solid solution of aluminium containing a few percent of copper, many works have been performed to understand the structure of different stages in the sequence of precipitation.The scheme which is generally admitted can be drawn from a work by Phillips.In their original model Guinier and Preston analysed a GP zone as composed of a single (100) copperrich plane surrounded by aluminum atomic planes with a slightly shorter distance from the original plane than in the solid solution.From X-ray measurements it has also been shown that GP1 zones were not only copper monolayer zones. They could be up to a few atomic planes thick. Different models were proposed by Guinier, Gerold, Toman. Using synchrotron radiation, proposals have been recently made.

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Metallographic analysis of M2 high speed steel granules

Voprosy Materialovedeniya ◽

10.22349/1994-6716-2018-96-4-78-85 ◽

2019 ◽

pp. 78-85

Author(s):

L. E. Afanasieva

Keyword(s):

Solid Solution ◽

Cellular Structure ◽

High Speed ◽

Solution Structure ◽

Supersaturated Solid Solution ◽

High Speed Steel ◽

Metallographic Analysis ◽

M2 High Speed Steel ◽

Melt Composition

The article is devoted to the metallographic analysis of the M2 high-speed steel granules. The study is based on the investigation of the microstructure of the M2 high-speed steel granules obtained by melt atomization. It is demonstrated that granules of similar size can harden both by chemically separating and chemically non-separating mechanism. These last ones have supersaturated solid solution structure of the liquid melt composition, a dispersed dendritic-cellular structure and an increased microhardness HV = 10267±201 MPa.

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