Effect of dysprosium on the kinetics and structural transformations during the decomposition of the supersaturated solid solution in magnesium–samarium alloys

2017 ◽  
Vol 2017 (3) ◽  
pp. 193-199
Author(s):  
L. L. Rokhlin ◽  
E. A. Luk’yanova ◽  
N. Yu. Tabachkova ◽  
T. V. Dobatkina ◽  
I. E. Tarytina ◽  
...  
Keyword(s):  
Solid Solution ◽  
Supersaturated Solid Solution ◽  
Structural Transformations ◽  
Samarium Alloys

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

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.

Non-equilibrium Ti-Fe bulk alloys with ultra-high strength and enhanced ductility

2004 ◽  
Vol 851 ◽  
Author(s):  
Dmitri V. Louzguine-Luzgin ◽  
Larissa V. Louzguina-Luzgina ◽  
Hidemi Kato ◽  
Akihisa Inoue
Keyword(s):  
Solid Solution ◽  
Supersaturated Solid Solution ◽  
High Strength ◽  
Eutectic Structure ◽  
Solution Phase ◽  
Solid Solution Phase ◽  
Mechanical Fracture ◽  
Glassy Alloys ◽  
Fe Alloys ◽  
Bulk Alloys

ABSTRACTThe high-strength and ductile hypo-, hyper- and eutectic Ti-Fe alloys were formed in the shape of the arc-melted ingots with the dimensions of about 25–40 mm in diameter and 10–15 mm in height. The structure of the samples consists of cubic Pm 3 m TiFe and BCC Im 3 m β-Ti supersaturated solid solution phase. The arc-melted hypereutectic Ti65Fe35 alloy has a dispersed structure consisting of the primary TiFe phase and submicron-size eutectic structure. This alloy exhibits excellent mechanical properties: a Young's modulus of 149 GPa, a high mechanical fracture strength of 2.2 GPa, a 0.2 % yield strength of 1.8 GPa and 6.7 % ductility. The hard round-shaped intermetallic TiFe phase and the supersaturated β-Ti solid solution result in a high strength of the Ti65Fe35 alloy which in addition has much higher ductility compared to that of the nanostructured or glassy alloys. The reasons for the high ductility of the hypereutectic alloy are discussed.

scholarly journals Effects of Pressure and Temperature on Consolidation of Nanocrystalline MA Powder of Al-10.7 at%Ti-0.6 at%Fe Supersaturated Solid Solution

1997 ◽  
Vol 38 (3) ◽  
pp. 247-254 ◽  
Author(s):  
Hideki Araki ◽  
Shigeoki Saji ◽  
Tsuyoshi Okabe ◽  
Yoritoshi Minamino ◽  
Toshimi Yamane ◽  
...  
Keyword(s):  
Solid Solution ◽  
Supersaturated Solid Solution

The Influence of Friction Deformation on the Microstructure and Hardening of Beryllium Bronze

2021 ◽  
Vol 410 ◽  
pp. 439-443
Author(s):  
Vladislav R. Baraz ◽  
Svetlana Kh. Estemirova ◽  
Elena A. Ishina
Keyword(s):  
Solid Solution ◽  
Dry Friction ◽  
Supersaturated Solid Solution ◽  
Dispersion Hardening ◽  
Microstructure And Properties ◽  
Beryllium Bronze ◽  
Friction Mode

The peculiarities of the microstructure and properties of BrBNT1.7 beryllium bronze tape samples were studied: the samples were subjected to dispersion hardening as a result of quenching in a supersaturated solid solution and aging. Friction deformation in a dry friction mode provides additional effective hardening while maintaining increased plasticity (bending-and-unbending test).

Resistometric analysis of formation of a new phase in supersaturated solid solution of iron in aluminium

1970 ◽  
Vol 3 (1) ◽  
pp. 71-74 ◽  
Author(s):  
E. Babić ◽  
R. Krsnik ◽  
B. Leontić ◽  
A. Tonejc
Keyword(s):  
Solid Solution ◽  
Supersaturated Solid Solution ◽  
New Phase
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