scholarly journals The Influence of the Synthesis Temperature on Phase Composition and Structure of Tenary Compounds Obtained from the Powder Mixture of the TiH2-Al-C System

2017 ◽  
Vol 18 (4) ◽  
pp. 438-443
Author(s):  
G. A. Bagliuk ◽  
O. V. Suprun ◽  
A. A. Mamonova
Keyword(s):  
Phase Composition ◽  
Intermetallic Compound ◽  
Titanium Carbide ◽  
Metastable Phase ◽  
Synthesis Temperature ◽  
Vacuum Furnace ◽  
Thermal Synthesis ◽  
Ternary Compounds ◽  
Composition And Structure ◽  
Thermal Sintering

This paper presents the results of an investigation of the features of phase and structure formation of a ternary compound during thermal sintering use of compacted TiH2-Al-C powder blends. The thermal sintering was carried out in a vacuum furnace at temperature 1150, 1300, and 1400 0С. The x-ray diffraction pattern and structural analysis show that the main phase after synthesis at 1150 0С is titanium carbide. The ternary Ti2AlC and intermetallic Ti3Al compound were also identified in the phase composition of the alloy. Increasing the sintering temperature to 1300 °C leads to significant increases in the content of Ti2AlC ternary compounds and accordingly decreases the content of titanium carbide TiC.  Is propose a modified model thermal synthesis of ternary compounds of the Ti-Al-C system, which includes the melting of aluminum and its interaction with titanium at low-temperature stages of the process, the formation of the Ti3Al intermetallic compound, formation titanium carbide grains as a result of the interaction of the Al4C3 intermediate metastable phase with titanium or Ti3Al intermetallic compound and the synthesis of ternary Ti2AlC and Ti3AlC2 compounds as a result of the interaction of the Ti3Al intermetallic compound with carbon and Ti2AlC with titanium carbide TiC. 

Microstructures Development in Al-5Fe and Al-5Fe-3Y Alloys Solidified at Different Cooling Rate

2011 ◽  
Vol 189-193 ◽  
pp. 2462-2466
Author(s):  
Guo Fa Mi ◽  
Cui Fen Dong ◽  
Chang Yun Li ◽  
Hai Yan Wang
Keyword(s):  
Rare Earth ◽  
Phase Composition ◽  
Intermetallic Compound ◽  
Cooling Rate ◽  
Melt Spinning ◽  
Metastable Phase ◽  
Vacuum Melting ◽  
Suction Casting ◽  
Rapidly Solidified

Cast, sub-rapidly solidified and rapidly solidified Al-5Fe alloy and Al-5Fe-3Y alloy were respectively prepared by vacuum melting, suction casting and melt spinning. The effect of increasing cooling rate and adding rare earth Y alloy on microstructures and phase composition were investigated. The results showed that the acicular Al3Fe phase transferred to spherical phase and dispersed secondary precipitations were also found when 3.0 wt% Y was added in the Al-5Fe alloy. Meanwhile, the microstructures were apparently refined by the increasing of cooling rate. The metastable phase A16Fe and intermetallic compound A110Fe2Y phase have been observed in Al-5Fe alloy and Al-5Fe-3Y alloy, respectively.

scholarly journals OBTAINING COATINGS FROM HARD ALLOYS BY EXPLOSIVE LOADING OF MIXTURES OF CHROME CARBIDE AND TITANIUM CARBIDE POWDERS ON METAL BASES

2020 ◽  
pp. 10-13
Author(s):  
A. V. Krokhalev ◽  
V. O. Kharlamov ◽  
E. A. Ivanenko ◽  
D. R. Chernikov ◽  
S. V. Kuz’min ◽  
...  
Keyword(s):  
Phase Composition ◽  
Detonation Wave ◽  
Titanium Carbide ◽  
Explosive Loading ◽  
Hard Alloys ◽  
Mechanism Of Formation ◽  
Metal Substrates ◽  
Composition And Structure ◽  
Structure Of Coatings ◽  
Explosive Pressing

The principal features of the mechanism of formation of coatings from hard alloys during their production by explosive pressing of mixtures of CrC and Ti powders on metal substrates are described. The phase composition and structure of coatings deposited using loading by a plane normally incident detonation wave and sliding loading are considered.

Phase Composition and Structure of Titanium Carbide/Nickel Binder Synthesis Products

2019 ◽  
Vol 55 (11) ◽  
pp. 1104-1110 ◽  
Author(s):  
B. S. Seplyarskii ◽  
R. A. Kochetkov ◽  
T. G. Lisina ◽  
N. I. Abzalov ◽  
M. I. Alymov
Keyword(s):  
Phase Composition ◽  
Titanium Carbide ◽  
Composition And Structure ◽  
Nickel Binder

scholarly journals Features of Structure Formation During the Thermal Synthesis of Powders Carbide-Steels from Waste Sludge of Bearing Steels

2015 ◽  
Vol 16 (1) ◽  
pp. 167-172
Author(s):  
G.A. Bagliuk ◽  
A.A. Mamonova ◽  
N.O. Uskova ◽  
A.V. Bezdorozhev
Keyword(s):  
Phase Composition ◽  
Titanium Carbide ◽  
Boron Carbide ◽  
Structure Formation ◽  
Titanium Hydride ◽  
Thermal Synthesis ◽  
Waste Sludge ◽  
Bearing Steels ◽  
Boride Phases

The peculiarities of structure and phase composition of the briquettes material obtained by thermal fusion of the mixture consisting of a powder slurry obtained by grinding rollers and cone bearings, titanium hydride and graphite. It was shown that after synthesis at temperatures of 1150÷1200 0С phase composition of the obtained alloy includes mainly phases of titanium carbide, cementite and α-Fe. When boron carbide introduced into the mixture too, the last dissociates during thermal synthesis, resulting along with titanium carbide in the alloy significant content boride phases - TiB, TiB2, Ti2B5 and FeB was identified.

scholarly journals Mechanical Properties of U-Cu Intermetallic Compound Measured by Nanoindentation

Materials ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 2215 ◽  
Author(s):  
Ruiwen Li ◽  
Chuan Mo ◽  
Yichuan Liao
Keyword(s):  
Mechanical Properties ◽  
Intermetallic Compound ◽  
Chemical Properties ◽  
Element Distribution ◽  
Treatment Temperature ◽  
Diffusion Method ◽  
Vacuum Furnace ◽  
Young’S Moduli ◽  
Pressure Diffusion ◽  
Physico Chemical

The physico-chemical properties of the Uranium intermetallic compound are of technological importance for improvement of the safety and compatibility of nuclear engineering systems. Diffusion couple samples with U and Cu were assembled and U-Cu intermetallic compounds were fabricated at interface by hot pressure diffusion method at a treatment temperature of 350 °C to 650 °C and at a pressure of 168 MPa in a vacuum furnace. The microstructure and element distribution of the compound phase have been studied by means of SEM, EDS, and XRD. The result showed that a new phase was developed to a thickness of approximately 10 μm with a ration of U:Cu with 1:5. Mechanical properties such as elastic moduli and hardness of the compound have been studied by means of nanoindentation. The nanoindentation testing on sample indicated that hardness of Uranium intermetallic compound are higher than that of metal U and Cu. Uranium intermetallic compound and U have a Young’s moduli with 121 GPa, 160 GPa respectively. The elastic/plastic responses of U-Cu intermetallic compound and U under nanoindentation tests were also discussed in detail.

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