Specimen Preparation for Metal Matrix Composites with a High Volume Fraction of Reinforcing Particles for EBSD Analysis

High volume fraction Aluminum/alumina-fused silica hybrid metal matrix composites containing alumina with 0, 10, 30 and 50 wt% fused silica were produced by melt squeezing casting method. Microstructure of hybrid composite was investigated by optical microscope and scanning electron microscopy (SEM). The SEM images showed uniform distribution of fused silica particles in composite microstructure. Also compressive strength of the composites changed (310-110 MPa) with amount of fused silica.

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Experimental Research on Ultrasonic Vibration Milling Metal Matrix Composites SiCp/Al

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.291-294.1725 ◽

2011 ◽

Vol 291-294 ◽

pp. 1725-1728 ◽

Cited By ~ 2

Author(s):

Guo Fu Gao ◽

Yan Yan Zhao ◽

Dao Hui Xiang ◽

Bo Zhao

Keyword(s):

Metal Matrix Composites ◽

Ultrasonic Vibration ◽

Metal Matrix ◽

Volume Fraction ◽

High Volume ◽

Machining Process ◽

Matrix Composites ◽

Machining Performance ◽

Ultrasonic Milling ◽

Vibration Milling

Although particle reinforced metal matrix composites possess excellent physical properties, its machining performance is rather bad because of its specific structure. It is difficult to obtain good cutting effect by traditional machining method. So machining has become the bottleneck which strictly restricts its industry application. This paper mainly focuses on both wear characteristics of different tool materials and material removal mechanism in ultrasonic milling high volume fraction particle reinforced metal matrix composites SiCp/Al. An acoustic device for ultrasonic vibration milling was developed to introduce the ultrasonic vibration into the traditional machining process. Through the contrast experiment of traditional milling and ultrasonic vibration milling SiCp/Al, the mechanism of tool wear and characteristics of surface topography were analyzed. The experimental results showed that the surface integrity and tool life in the ultrasonic vibration milling SiCp/Al were improved. This template explains and demonstrates how to prepare your camera-ready paper for Trans Tech Publications. The best is to read these instructions and follow the outline of this text.

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Transmission Electron Microscope Specimen Preparation of Metal Matrix Composites Using the Focused Ion Beam Miller

Microscopy and Microanalysis ◽

10.1017/s1431927600017785 ◽

1999 ◽

Vol 5 (S2) ◽

pp. 892-893

Author(s):

J.M. Cairney ◽

R.D. Smith ◽

P.R. Munroe

Keyword(s):

Metal Matrix Composites ◽

Metal Matrix ◽

Focused Ion Beam ◽

Materials Science ◽

Volume Fraction ◽

Ion Beam ◽

Semiconductor Industry ◽

Specimen Preparation ◽

Matrix Composites ◽

Thin Foils

The focused ion beam (FIB) miller has been widely accepted as a powerful tool in the semiconductor industry. However, it is now finding applications in more general materials science applications. The high resolution, energetic gallium ion beam can rapidly and precisely section materials to reveal their internal structure; one particularly valuable application being the preparation of thin foils for TEM examination, especially from heterogenous materials.To date, TEM sample preparation using FIBs has concentrated on semiconductor cross-sections [1], powders [2], and surface treated materials, e.g. galvanized steels [3]. However, thin foils of grossly heterogeneous materials, such as metal-matrix composites, are also difficult to prepare using conventional methods and are therefore well suited to sectioning using the FIB. In this study, thin foils were prepared from two composite materials: a 7075 aluminium alloy containing a 20% volume fraction of SiC particles and a FeAl alloy containing a 60% volume fraction of WC particles.

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