Microstructure and Mechanical Properties of Mg-Based Composites Reinforced with TiB2 Particles

2014 ◽  
Vol 900 ◽  
pp. 141-145 ◽  
Author(s):  
Can Feng Fang ◽  
Guang Xu Liu ◽  
Ling Gang Meng ◽  
Xing Guo Zhang
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Composite Material ◽  
High Temperature ◽  
The Self ◽  
Al Alloy ◽  
Temperature Synthesis ◽  
Microstructure And Mechanical Properties ◽  
High Temperature Synthesis

The effects of in-situ TiB2 particle fabricated from Al-Ti-B system via the self-propagating high-temperature synthesis (SHS) reaction technology on microstructure and mechanical properties of Mg-Sn-Zn-Al alloy were investigated. The results indicate that the size of the Mg2Sn and α-Mg+Mg32(Al,Zn)49 phase becomes coarser with the increasing content of Al-Ti-B preform, meanwhile the amount of eutectic α-Mg+Mg32(Al,Zn)49 phase increases too. The addition of Al-Ti-B is favorable toward promoting the strength of composites, but deteriorates elongation. The resulting as-extruded composite material with 4 wt.% Al-Ti-B preform exhibits good overall mechanical properties with an ultimate tensile strength of 291 MPa and an elongation over 2 %.

Investigation on B, Cr Doped Ni3Al Alloy Prepared by Self-Propagation High-Temperature Synthesis and Hot Extrusion

2013 ◽  
Vol 747-748 ◽  
pp. 124-131 ◽  
Author(s):  
Li Yuan Sheng ◽  
Jian Ting Guo ◽  
Chao Yuan ◽  
F. Yang ◽  
G.S. Li ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
High Temperature ◽  
Hot Extrusion ◽  
The Self ◽  
Al Alloy ◽  
Temperature Synthesis ◽  
X Ray ◽  
High Temperature Synthesis ◽  
Transmission Electron

The Ni3Al and Ni3Al-B-Cr alloys were fabricated by the self-propagation high-temperature synthesis with hot extrusion method. Their microstructure and mechanical properties were studied by using combination of X-ray diffraction, optical microscopy, transmission electron microscopy and compression test. Analysis of X-ray spectra exhibited that the elemental powders had been transformed to the Ni3Al phase after the self-propagation high-temperature synthesis processing. Microstructure examination showed that the alloy without extrusion consisted of coarse and fine grains, but the subsequent hot extrusion procedure homogenized the grain size and densified the alloy obviously. Transmission electron microscopy observations on the Ni3Al alloy revealed that Ni3Al, γ-Ni and Al2O3 particles were the main phases. When the boron and chromium were added, besides the β-NiAl phase, α-Cr phase and some Cr7Ni3 particles with stacking faults inside were observed. In addition, a lot of substructure and high-density dislocation arrays were observed in the extruded part, which indicated that the subsequent extrusion had led to great deformation and partly recrystallizing in the alloy. Moreover, the subsequent extrusion procedure redistributed the Al2O3 particles and eliminated the γ-Ni. These changes were helpful to refine the microstructure and weaken the misorientation. The mechanical test showed that the self-propagation high-temperature synthesis with hot extrusion improved the mechanical properties of the Ni3Al alloy significantly. The addition of B and Cr in Ni3Al alloy increased the mechanical properties further, but the compressive strength of the alloy was still lower than that synthesized by combustion. Finally, the self-propagation high-temperature synthesis with hot extrusion was a good method to prepare Ni3Al alloy from powder.

scholarly journals Self-propagating high-temperature synthesis of the nitrogen-contain material based on the aluminum and vanadium nitride to prepare the titanium preliminary alloy's

2018 ◽  
pp. 49-52
Author(s):  
V. V. Zakorzhevskii ◽  
I. D. Kovalev ◽  
A. Ya. Dubrovskii
Keyword(s):  
High Temperature ◽  
Large Scale ◽  
Processing Method ◽  
The Self ◽  
Vanadium Nitride ◽  
Al Alloy ◽  
Temperature Synthesis ◽  
High Temperature Synthesis ◽  
Test Batch ◽  
Scale Reactor

The investigating results are shown on the V‒Al alloy nitriding while burning in the large-scale reactor. The nitriding optimal condition were defned. The phaseforming behavior was investigated while the V‒All alloy nitriding under the burning condition. The processing method was developed for the self-propagating hightemperature nitriding. The test batch of the nitrided V‒ Al‒N alloy was manufactured.Ill.5. Ref. 5.

Obtaining of doped composite material Al—Cu—Mn—TiC with enhanced tribological properties

2020 ◽  
pp. 278-282
Author(s):  
A.R. Luts ◽  
A.P. Amosov ◽  
E.I. Latukhin ◽  
A.D. Rybakov ◽  
S.V. Shigin
Keyword(s):  
Composite Material ◽  
High Temperature ◽  
Titanium Carbide ◽  
Tribological Properties ◽  
Heating Temperature ◽  
Synthesis Method ◽  
Matrix Alloy ◽  
The Self ◽  
Temperature Synthesis ◽  
High Temperature Synthesis

The results of tribological characteristics of alumomatric composite material Al — 5 % Cu — 2 % Mn — 10 % TiC obtained by the self-propagating high-temperature synthesis method are presented. It is shown that in comparison with technical aluminum and matrix alloy, signifi cantly lower indicators of the coeffi cient of friction, wear and heating temperature characterize composite material, reinforced with nano- and ultrafi ne particles of titanium carbide.

Microstructural and Mechanical Properties of Cu-based Alloy Manufactured by Self-Propagating High-Temperature Synthesis Method

2017 ◽  
Vol 33 (3-4) ◽  
pp. 121
Author(s):  
Y. Amiour ◽  
K. Zemmour ◽  
D. Vrel
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Brinell Hardness ◽  
Synthesis Method ◽  
Tensile Tests ◽  
The Self ◽  
X Ray Diffraction ◽  
Temperature Synthesis ◽  
X Ray ◽  
High Temperature Synthesis

<p>Microstructure and properties of Cu<sub>1-x</sub>Zn<sub>1-y</sub>Al<sub>1-z</sub> ranging through (0.29 &lt;X&lt; 0.30; 0.74 &lt;Y&lt; 0.75; and 0.83 &lt;Z&lt; 0.96) alloys obtained by the Self- propagating High-temperature Synthesis (SHS) were examined. The microstructural and mechanical properties were examined, respectively by X-ray diffraction, tensile tests and Brinell hardness. The obtained results showed that the modification of composition lead to the formation of new phases. Therefore, this microstructure affects strongly the mechanical properties of the selected samples. In this study, we will also highlight the SHS technology and prove that it can alternate the conventional methods regarding the development of a Shape Memory Alloys (SMAs).</p><p> </p>

Effects of Cold Deformation on Microstructure and Mechanical Properties of Cu-0.35Al2O3(Y) Composite

2011 ◽  
Vol 194-196 ◽  
pp. 1639-1642
Author(s):  
Bao Hong Tian ◽  
Yong Qiang Dai ◽  
Yi Zhang ◽  
Yong Liu
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Internal Oxidation ◽  
Cold Deformation ◽  
Thin Strip ◽  
Al Alloy ◽  
Nano Oxide ◽  
Microstructure And Mechanical Properties ◽  
Base Composite

Internal oxidation is one of the most common methods to produce in situ nano oxide particles dispersion strengthened copper base composite (ODSC) in powder industry. In this paper, a simplified internal oxidation method was proposed to prepare ODSC composite by using thin strip of Cu-Al alloy. The effects of the addition of rare earth element yttrium and cold deformation on the microstructure and mechanical properties, such as hardness and tensile strength, were investigated briefly. Results show that after 80% deformation, the crystalline grains of the composite matrix plastically deformed in elongated shape to a certain direction as banded fiber structure. The addition of trace element yttrium and cold information increase the hardness and tensile strength of the Cu-0.35Al2O3(Y) composite remarkably, respectively.

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