Correlation between the abrasive ability of ceramic reinforced amorphous metal matrix composites and the adhesion energy between the amorphous matrix and the ceramic particles

Mit der partiellen Einbringung von keramischen Partikeln in der Pulvermatrix lassen sich die lokalen Eigenschaften gezielt einstellen. Der Einsatz unterschiedlicher und heterogen verteilter Materialien in einem Werkstück wirkt sich auf den induktiven Erwärmungsprozess aus. Dieser Fachbeitrag beschäftigt sich mit Erwärmungsuntersuchungen an partiell partikelverstärkten Pulverpresslingen aus Stahl in den thixotropen Temperaturbereich für den anschließenden Schmiedeprozess.   Due to the partial incorporation of ceramic particles, locally improved properties can be achieved in powder metallurgy of metal matrix composites. The use of various and heterogeneous distributed materials in one workpiece has an effect on the inductive heating process. This article deals with investigations on heating at thixotropic temperature range of partially particle-reinforced powder compacts made of steel for the subsequent forging process.

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Influence of ceramic particles and fibre reinforcement in metal matrix composites on the VHCF behaviour. Part II: Stochastic modelling and statistical inference

Fatigue of Materials at Very High Numbers of Loading Cycles ◽

10.1007/978-3-658-24531-3_15 ◽

2018 ◽

pp. 319-342

Author(s):

M. Baaske ◽

A. Illgen ◽

Anja Weidner ◽

H. Biermann ◽

Felix Ballani

Keyword(s):

Statistical Inference ◽

Metal Matrix Composites ◽

Metal Matrix ◽

Stochastic Modelling ◽

Fibre Reinforcement ◽

Matrix Composites ◽

Ceramic Particles

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Fabrication and tribological study of AA6061 hybrid metal matrix composites reinforced with SiC/B4C nanoparticles

Industrial Lubrication and Tribology ◽

10.1108/ilt-05-2018-0166 ◽

2019 ◽

Vol 71 (1) ◽

pp. 83-93 ◽

Cited By ~ 7

Author(s):

Shubhajit Das ◽

Chandrasekaran M. ◽

Sutanu Samanta ◽

Palanikumar Kayaroganam ◽

Paulo Davim J.

Keyword(s):

Metal Matrix Composites ◽

Metal Matrix ◽

Hybrid Composites ◽

Normal Load ◽

Matrix Composites ◽

Sliding Speed ◽

Ceramic Particles ◽

Content Type ◽

Ceramic Nanoparticles ◽

Hybrid Metal Matrix Composites

Purpose Composite materials are replacing the traditional materials because of their remarkable properties and the addition of nanoparticles making a new trend in material world. The nano addition effect on tribological properties is essential to be used in automotive and industrial applications. The current work investigates the sliding wear behavior of an aluminum alloy (AA) 6061-based hybrid metal matrix composites (HMMCs) reinforced with SiC and B4C ceramic nanoparticles. Design/methodology/approach The hybrid composites are fabricated using stir casting process. Two different compositions were fabricated by varying the weight percentage of the ceramic reinforcements. An attempt has been made to study the wear and friction behavior of the composites using pin-on-disc tribometer to consider the effects of sliding speed, sliding distance and the normal load applied. Findings The tribological tests are carried out and the performances were compared. Increase in sliding speed to 500 rpm resulted in the rise of temperature of the contacting tribo-surface which intensified the wear rate at 30N load for the HMMC. The presence of the ceramic particles further reduced the contact region of the mating surface thus reducing the coefficient of friction at higher sliding speeds. Oxidation, adhesion, and abrasion were identified to be the main wear mechanisms which were further confirmed using energy dispersive spectroscopy and field emission scanning electron microscopy (FESEM) of the worn out samples. Practical implications The enhancement of wear properties is achieved because of the addition of the SiC and B4C ceramic nanoparticles, in which these composites can be applied to automobile, aerospace and industrial products where the mating parts with less weight is required. Originality/value The influence of nanoparticles on the tribological performance is studied in detail comprising of two different ceramic particles which is almost new research. The sliding effect of hybrid composites with nano materials paves the way for using these materials in engineering and domestic applications.

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Composite Peening - A Novel Processing Technology for Graded Reinforced Aluminium Matrix Composites

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.742.137 ◽

2017 ◽

Vol 742 ◽

pp. 137-144 ◽

Cited By ~ 2

Author(s):

Michael Seitz ◽

Andreas Reeb ◽

Alexander Klumpp ◽

Kay André Weidenmann

Keyword(s):

Metal Matrix Composites ◽

Metal Matrix ◽

Solid Phase ◽

Base Material ◽

Functionally Graded ◽

Matrix Composites ◽

Ceramic Particles ◽

Novel Processing ◽

Material Utilization ◽

Stressed Component

Recently, the attention paid to Metal Matrix Composites (MMCs) has increased markedly. In particular, particle-reinforced MMCs are outstanding due to superior specific properties and their wear resistance. In order to further improve material utilization, recent investigations with local reinforcements in highly stressed component sections, the so-called Functionally Graded Metal Matrix Composites (FGMMC), are concerned. The production of such FGMMC was realized with composite peening - a modified process on the basis of micro shot peening. Due to this solid-phase process, ceramic particles can be introduced into regions close to the boundary layer. As preliminary studies on tin show, ceramic particles can be introduced close to the specimen surface even at room temperature. By varying process parameters, in particular by increasing the temperature, the penetration depth of the particles can be significantly increased. In case of aluminium as base material, an input of particles into the surface could be observed at a process temperature of 150 °C. The combination of aluminium with reinforced ceramic particles makes this process interesting for lightweight, wear-resistant and cyclically highly stressed structural components. Using composite peening to produce FGMMCs is a novel, economic approach.

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