Effect of mechanical activation on the phase composition, structure, and polymorphism of YBa2Cu3O6 + δ oxide

2012 ◽  
Vol 79 (1) ◽  
pp. 87-94
Author(s):  
A. V. Fetisov ◽  
S. A. Petrova ◽  
R. G. Zakharov ◽  
R. I. Gulyaeva
Keyword(s):  
Phase Composition ◽  
Mechanical Activation ◽  
Composition Structure

Phase composition, structure, and hydrolytic durability of glasses in the Na2O-Al2O3-(Fe2O3)-P2O5 system at replacement of Al2O3 by Fe2O3

2015 ◽  
Vol 57 (4) ◽  
pp. 348-355 ◽  
Author(s):  
S. V. Stefanovsky ◽  
O. I. Stefanovskaya ◽  
S. E. Vinokurov ◽  
S. S. Danilov ◽  
B. F. Myasoedov
Keyword(s):  
Phase Composition ◽  
Composition Structure ◽  
P2o5 System ◽  
Hydrolytic Durability

scholarly journals Production and investigation of powders for additive synthesis from a new beta-solidifying TiAl-based alloy

2021 ◽  
Vol 2144 (1) ◽  
pp. 012004
Author(s):  
P V Panin ◽  
I A Bogachev ◽  
E A Lukina
Keyword(s):  
Phase Composition ◽  
Chemical Composition ◽  
Equilibrium Phase ◽  
Fold Increase ◽  
Induction Melting ◽  
Technological Properties ◽  
Powder Flowability ◽  
Powder Particles ◽  
Additive Synthesis ◽  
Composition Structure

Abstract Chemical composition, structure, and technological properties have been investigated for metal powder compositions (MPCs) of a new six-component TiAl-based alloy with Gd microadditions: Ti-31.0Al-2.5V-2.5Nb-2.5Cr-0.4Gd, wt.% (Ti-44.5Al-2V-1Nb-2Cr-0.1Gd, at.%). Three MPCs fractions (10–63, 40–100, 80–120 μm) were produced by electrode induction melting and inert gas atomization technique and targeted for the additive synthesis of parts. It is shown that the chemical composition of the MPCs for the main elements corresponds to that of the electrode. In contrast, a 1.5-fold increase of the oxygen content in the MPCs was observed, which is being the result of natural oxidation of powder particles upon air environment due to developed specific surface. It has been determined that the phase composition of the MPCs (γ+α(α2)+β) differs from the equilibrium phase composition of the electrode (γ+α2)+β0/B2) and corresponds to a rapidly quenched metastable state, which indicates high solidification rates in the atomization process, exceeding critical cooling rates of the alloy. The technological properties, specifically the powder flowability, were found to be improved for 40–100 and 80–120 μm fractions, making them applicable for additive synthesis of parts from the studied alloy by selective electron-beam melting method

Regularities of the formation of the phase composition, structure and properties of the БрНХК 2.5-0.7-0.6 alloy during thermal and aerothermoacoustic treatments

2021 ◽  
pp. 71-75
Author(s):  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Phase Composition ◽  
Aging Treatment ◽  
Structure And Properties ◽  
Additional Increase ◽  
Composition Structure ◽  
Aerothermoacoustic Treatment

The influence of thermal and aerothermoacoustic treatments on the structure and mechanical properties of БрНХК bronze is considered. An increase in the strength and elasticity of the alloy is established by optimizing the thermal and aerothermoacoustic modes. The influence of the pre-aging treatment, the aging and aerothermoacoustic modes on the structure, the possibility of an additional increase in the mechanical properties of wire from БрНХК after aerothermoacoustic treatment are shown. Keywords: bronze, heat treatment, aerothermoacoustic treatment, microstructure, mechanical properties. [email protected]

Micromorphology and Characterization of V2O3 Nanoparticles Produced by the Liquid Phase Reduction-Heat Treatment

2019 ◽  
Vol 944 ◽  
pp. 650-656
Author(s):  
Ming Rui Zhang ◽  
Yuan Qin ◽  
Dao Zhang ◽  
Guang Yuan Wang ◽  
Sen Yang
Keyword(s):  
Heat Treatment ◽  
Phase Composition ◽  
Liquid Phase ◽  
Thermal Treatment ◽  
Oxalic Acid ◽  
Structure And Morphology ◽  
Phase Reduction ◽  
Novel Method ◽  
Composition Structure

The liquid phase reduction-heat treatment has been used to prepare V2O3nanoparticles in this paper. It is a novel method that the precursor was developed by Oxalic acid dehydrate (H2C2O4·2H2O) reduction of V2O5powder in anhydrous ethanol. V2O3nanoparticles were successfully obtained by thermal treatment of the precursor. The phase, composition, structure, and morphology of the as-obtained samples were verified by XRD, XPS, SEM and TEM measurements. Meanwhile, the possible formation mechanism of V2O3in the heat-treatment is briefly discussed by analyzing the DSC.

Influence of Zirconium on Phase Composition, Structure, and Mechanical Properties of As-Cast Alloys of Ti-Al-Si System

2006 ◽  
Vol 25 (1-2) ◽  
pp. 59-66 ◽  
Author(s):  
I. Gornaya, ◽  
E. Gorpenko, ◽  
M. Bulanova, ◽  
O. Bankovsky, ◽  
L. Kulak, ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Phase Composition ◽  
Cast Alloys ◽  
Composition Structure
Sign in / Sign up

Export Citation Format

Share Document