Development of novel cellular copper–aluminum composite materials: The advantage of powder metallurgy and mechanical milling approach for lighter heat exchanger

2022 ◽  
pp. 125742
Author(s):  
Y. Saberi ◽  
H. Oveisi
Keyword(s):  
Heat Exchanger ◽  
Composite Materials ◽  
Powder Metallurgy ◽  
Mechanical Milling ◽  
Aluminum Composite ◽  
Copper Aluminum ◽  
Cellular Copper

Analysis of tribological properties of graphite and aluminum composite materials prepared by powder metallurgy technique

2020 ◽  
Vol 10 (5) ◽  
pp. 663-670
Author(s):  
Zhigang Wang ◽  
Jun Li ◽  
Daquan Li
Keyword(s):  
Composite Materials ◽  
Powder Metallurgy ◽  
Friction Coefficient ◽  
Tribological Properties ◽  
Utilization Rate ◽  
Powder Metallurgy Technique ◽  
Aluminum Composite ◽  
Powder Metallurgy Process ◽  
Metallurgy Process ◽  
Composite Samples

In order to make full use of the wear resistance and antifriction of the mixed reinforced particles, improve the performance and utilization rate of the composite material, and reduce its wear amount, in this study, graphite and aluminum composite materials with different graphite concentration were prepared by powder metallurgy process. On this basis, the influence of different graphite concentration on the friction coefficient and wear amount of composite samples and different load on the wear amount of composite materials were discussed and analyzed. The results show that with the increase of graphite content, the friction coefficient and wear amount of the composite will decrease correspondingly. When the load is less than 30 N, the wear curve of the sample changes steadily. When the load is more than 30 N, the wear will increase sharply. Therefore, the analysis of the tribological properties of the graphite and aluminum composites based on the powder metallurgy process plays an important role in improving the utilization rate of the composite and reducing its wear.

Fatigue Property for the Powder Metallurgy Beryllium-Aluminum Composite Materials

2007 ◽  
Vol 353-358 ◽  
pp. 207-210
Author(s):  
Yan Qing Wu ◽  
Li Sha Niu ◽  
Ping An Shi ◽  
Jun Mo ◽  
Hui Ji Shi
Keyword(s):  
Composite Materials ◽  
Powder Metallurgy ◽  
Fatigue Property ◽  
Aluminum Composite

TECHNOLOGICAL WAYS TO CREATE COMPOSITE MATERIALS BASED ON HEAT-RESISTANT REFRACTORY COMPOUNDS (review)

2021 ◽  
pp. 12-20
Author(s):  
A.V. Shestakov ◽  
◽  
M.M. Karashaev ◽  
N.S. Dmitriev ◽  
◽  
...  
Keyword(s):  
Composite Materials ◽  
Powder Metallurgy ◽  
Thermomechanical Processing ◽  
Technological Plasticity ◽  
Heat Resistant ◽  
System A ◽  
Refractory Compounds ◽  
Similar Materials ◽  
Powder Metallurgy Methods ◽  
Rocket Technology

The article discusses the main technological approaches to obtain heat-resistant and heat-resistant materials based on compounds in the Ni–Al system in order to use them in promising products of aviation and rocket technology. It is shown that when receiving materials based on compounds in the Ni-Al system, a phase of eutectic origin is formed based on the Ni3Al compound, which reduces the technological plasticity of the alloys of this system. The use of powder metallurgy methods eliminates such phases in the structure of alloys obtained using granule metallurgy technology, as well as with the use of special methods of powder metallurgy. Technological approaches are presented to obtain similar materials using powder metallurgy methods combined with thermomechanical processing.

ASME 1992 Nadai Lecture—Micromechanics of Inelastic Composite Materials: Theory and Experiment

1993 ◽  
Vol 115 (4) ◽  
pp. 327-338 ◽  
Author(s):  
George J. Dvorak
Keyword(s):  
Composite Materials ◽  
General Procedure ◽  
Local Fields ◽  
Field Analysis ◽  
Plastic Strains ◽  
Inelastic Behavior ◽  
Aluminum Composite ◽  
Plastic Strain Increment ◽  
Multiphase Materials ◽  
Transformation Field Analysis

Some recent theoretical and experimental results on modeling of the inelastic behavior of composite materials are reviewed. The transformation field analysis method (G. J. Dvorak, Proc. R. Soc. London, Series A437, 1992, pp. 311–327) is a general procedure for evaluation of local fields and overall response in representative volumes of multiphase materials subjected to external thermomechanical loads and transformations in the phases. Applications are presented for systems with elastic-plastic and viscoelastic constituents. The Kroner-Budiansky-Wu and the Hill self-consistent models are corrected to conform with the generalized Levin formula. Recent experimental measurements of yield surfaces and plastic strains on thin-walled boron-aluminum composite tubes are interpreted with several micromechanical models. The comparisons show that unit cell models can provide reasonably accurate predictions of the observed plastic strains, while models relying on normality of the plastic strain increment vector to a single overall yield surface may not capture the essential features of the inelastic deformation process.

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