Structural aspects of supersaturated solid solution decomposition for Al-Zn containing silver

1973 ◽  
Vol 16 (3) ◽  
pp. 411-412
Author(s):  
K. M. Yamaleev
Keyword(s):  
Solid Solution ◽  
Supersaturated Solid Solution ◽  
Solid Solution Decomposition ◽  
Supersaturated Solid Solution Decomposition ◽  
Structural Aspects

Specific Features of the Strengthening during Severe Plastic Deformation of Supersaturated Solid Solutions

2006 ◽  
Vol 503-504 ◽  
pp. 399-406 ◽  
Author(s):  
Sergey V. Dobatkin ◽  
Valerij V. Zakharov ◽  
L.L. Rokhlin
Keyword(s):  
Solid Solution ◽  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Supersaturated Solid Solution ◽  
Carbon Steels ◽  
Low Carbon ◽  
Quenching Temperature ◽  
Solid Solution Decomposition ◽  
Supersaturated Solid Solutions ◽  
Supersaturated Solid Solution Decomposition

The effect of the supersaturated solid solution decomposition occurring prior to, during, and after severe plastic deformation by torsion under high hydrostatic pressure on strengthening is examined by the examples of Al-Cu-Mg, Al-Mg-Sc, and Mg-Sm alloys and 0.12%C-0.85%Mn- 0.65%Si and 0,1%C-1.12%Mn-0.08%V-0.07%Ti low-carbon steels. The decomposition of the supersaturated solid solution was realized upon cooling from the quenching temperature (lowcarbon steels), prior to deformation (Al-Cu-Mg-, Mg-Sm alloys), during deformation (Al-Cu-Mg-, Mg-Sm alloys), and after deformation. It is shown, the decomposition of the supersaturated solid solution is effective for the grain refinement down to nanoscale and strengthening, but, for different materials, different combinations with SPD should be used.

scholarly journals X-Ray Study on Mg-Sm Alloy Produced by HPT

2007 ◽  
Vol 561-565 ◽  
pp. 917-920
Author(s):  
Masahide Gotoh ◽  
Kazuo Kitagawa ◽  
Sergey V. Dobatkin ◽  
Yukio Hirose
Keyword(s):  
Supersaturated Solid Solution ◽  
High Pressure Torsion ◽  
Profile Analysis ◽  
Microcrystalline Structure ◽  
X Ray Diffraction ◽  
X Ray ◽  
Lattice Constants ◽  
Solid Solution Decomposition ◽  
Back Scattering ◽  
Supersaturated Solid Solution Decomposition

The purpose of this study is to reveal the cause of hardening of magnesium base alloys by the high pressure torsion processing (HPT) using X-ray diffraction. HPT was applied to Mg base alloys of the Mg-Sm system (2.8-5.5 mass %Sm). HPT was performed under pressure 4GPa at 20 oC and 200 oC. HPT results in significant strengthening of the Mg-Sm alloys due to the formation of sub microcrystalline structure. The dynamic recrystallization was realized through the pole figure measurement and the photograph of X-ray back scattering. The Mg supersaturated solid solution decomposition during HPT was observed by the X-ray profile analysis and the calculation of lattice constants of the Mg phase.

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

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.

Metallographic analysis of M2 high speed steel granules

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.

Microstructure evolution of YSZ/Al2O3 supersaturated solid solution

2021 ◽  
Vol 549 ◽  
pp. 149260
Author(s):  
Yongdong Yu ◽  
Yongting Zheng ◽  
Xudong Liu ◽  
Yuchen Yuan ◽  
Wanjun Yu ◽  
...  
Keyword(s):  
Solid Solution ◽  
Microstructure Evolution ◽  
Supersaturated Solid Solution

Solid solution decomposition mechanisms in cast and microcrystalline Al-Sc alloys: I. Experimental studies

2012 ◽  
Vol 2012 (5) ◽  
pp. 415-427 ◽  
Author(s):  
V. N. Chuvil’deev ◽  
A. V. Nokhrin ◽  
I. M. Makarov ◽  
Yu. G. Lopatin ◽  
N. V. Sakharov ◽  
...  
Keyword(s):  
Solid Solution ◽  
Experimental Studies ◽  
Solid Solution Decomposition ◽  
Decomposition Mechanisms

Microstructural Study of Thin Films CuFe Obtained by Thermal Evaporation of Nanostructured Milled Powder

2017 ◽  
Vol 47 ◽  
pp. 71-78
Author(s):  
H. Mechri ◽  
Ahmed Haddad ◽  
M. Zergoug ◽  
Mohammed Azzaz
Keyword(s):  
Thin Films ◽  
Solid Solution ◽  
Physical Vapor Deposition ◽  
Thermal Evaporation ◽  
Supersaturated Solid Solution ◽  
Milled Powder ◽  
Mechanically Alloyed ◽  
Glass Substrates ◽  
Milling Duration ◽  
Tungsten Boat

Commercial copper and iron powders were used as starting materials. These powders were mechanically alloyed to obtain Cu(100-x) Fex supersaturated mixture. The milling duration was chosen in such a way as to obtain a nanostructured mixture and to form a supersaturated solid solution of CuFe; the powder mixture was used to deposit CuFe on a glass substrate. The elaboration of our films has been carried out using thermal evaporation process (physical vapor deposition) under 1 × 10-6 mbar vacuum from an electrically heated tungsten boat, using the supersaturated solid solution Cu(100-x) Fex powder obtained by mechanical alloying. The films deposition has been done on glass substrates. In this study, we present the composition effect on the structural and magnetic proprieties of Cu(100-x) Fex powder and thin films. The chemical composition, structural and magnetic proprieties of milled powders and thin films were examined by SEM, TEM, XRD, XRF and VSM.

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