Manufacture of nickel base composite materials with dispersed glass particles by the powder metallurgy method. Part I

1974 ◽  
Vol 13 (3) ◽  
pp. 224-226
Author(s):  
B. L. Rudoi ◽  
M. Kh. Shorshorov ◽  
G. M. Matveev ◽  
B. A. Borok ◽  
R. P. Shchegoleva
2004 ◽  
Vol 851 ◽  
Author(s):  
A. Rabiei ◽  
Adrian T. O'Neill ◽  
Brian P. Neville

ABSTRACTThe research sited in this paper involves the development of new closed cell metal foam composite materials using powder metallurgy (PM) and gravity casting techniques. The foam is comprised of steel hollow spheres packed into a random dense arrangement, with the interstitial space between spheres occupied with a solid metal matrix. Using a casting technique, an aluminum alloy infiltrates the interstitial spaces between steel spheres. In a powder metallurgy method, steel spheres and iron powder are sintered to form a solid, closed cell structure. The measured densities of the Al-Fe composite foam and iron foam are 2.4 g/cm3 and 3.2 g/cm3, with relative densities of 42% and 41% respectively.The hollow sphere metal foam composite materials developed in this study displayed superior compressive strength as compared to hollow sphere foams currently being produced. The compressive strength of the cast Al-Fe foam averaged 67 MPa over a region of 10 to 50% strain, while the steel PM foam averaged 45 MPa over the same strain region. Densification began at approximately 50% for the cast foam and 55% for the PM foam.


1974 ◽  
Vol 13 (4) ◽  
pp. 271-275
Author(s):  
B. L. Rudoi ◽  
M. Kh. Shorshorov ◽  
G. M. Matveev ◽  
B. A. Borok ◽  
R. P. Shchegoleva

2019 ◽  
Vol 51 (3) ◽  
pp. 327-338 ◽  
Author(s):  
Mehmet Akkaş ◽  
Serkan Islak

In this study, NiB-TiC composite materials were produced using powder metallurgy. In the Ni-TiC-B powder mixture, TiC was fixed at a rate of 5 %, 5, 10 and 15 % boron was added and mechanical alloying was carried out. The prepared powder mixtures were cold pressed under pressure of 400 MPa and sintered in an argon atmosphere at 800?C for 2 hours. Microstructure, phase formation, hardness, wear and corrosion properties of the samples were investigated in detail. Scanning electron microscopy (SEM) was used for microstructure analysis and X-ray diffractogram (XRD) was used for phase formation detection. The hardness measurements of the samples were measured by a microhardness measuring device. Densities of the samples were determined by Archimedes' principle. The corrosion tests were performed potentiodynamic polarization curves of the composite materials in 3.5 % NaCl solution. Wear tests were carried out the composite materials under a load of 10 N. Results showed that by increasing the amount of B, the wear and corrosion resistance increased.


1969 ◽  
Vol 8 (12) ◽  
pp. 1002-1005
Author(s):  
I. N. Frantsevich ◽  
D. M. Karpinos ◽  
V. A. Bespyatyi

2020 ◽  
Author(s):  
Olga Vladimirovna Romanova ◽  
Olga Fedorovna Rybalko ◽  
Mikhail Nikolaevich Zakharov ◽  
Nina Iosifovna Ilinykh

This study considers the preparation of new composite materials based on VT-22 titanium alloy powder made from waste from machining ingots by plasma spraying. Two composite compositions were selected for the study: 1 - 65% VT-22 + 30% PTM-1 + 5% N70Y30 and 2 - 70% VT-22 + 25% PTM-1 + 5% PMS. The structure and microstructure of the samples were studied, and X-ray phase analysis was carried out. Materials with a homogeneous fine structure were obtained by cold pressing followed by sintering. The samples have the structure of the VT-22 alloy but have a hardness higher than that of the starting material. Keywords: Composite materials, composite pressing, titanium alloy powders, additive powders


2015 ◽  
Vol 766-767 ◽  
pp. 320-323 ◽  
Author(s):  
N. Karthik ◽  
S. Prabhu ◽  
Sahil Santosh ◽  
Ashutosh Singh

In the field of material science and engineering, there is a great impact ever since the invention of composites materials. High strength to weight ratio provides the attractive combination that moves composite materials into new era. The conventional materials like cast iron, steel, and aluminium alloy are replaced by the composite materials due to its superficial properties and could be applied in aerospace and automotive applications. Powder metallurgy fabrication technique is one of the best and attractive methods for producing metal matrix composites because of its better distribution of particles and reliability and cost in manufacturing. In this paper, composites based on aluminium alloy (Al 2024) reinforced with 10% weight fraction of hard ceramics like Aluminium oxide (Al2O3) and 10% weight fraction of Aluminium oxide (Al2O3) with 5% graphite particles is produced by Powder metallurgy method. Hardness and wear test are conducted for the Al 2024, Al-10%Al2O3, and Al-10% Al2O3-5% Graphite. In addition the surfaces of the composite are analyzed by SEM to study the wear of the composites.


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