Investigation on secondary deformation of ultrafine SiC particles reinforced LM25 metal matrix composites

2021 ◽  
Author(s):  
Nand Jee Kanu ◽  
Amogh Mangalam ◽  
Eva Gupta ◽  
Umesh Kumar Vates ◽  
Gyanendra Kumar Singh ◽  
...  
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Matrix Composites ◽  
Secondary Deformation ◽  
Sic Particles

Influence of Tool pin Profile on the Microstructure and Mechanical Behavior of Cu/SiC Metal Matrix Composites Produced by Friction Stir Processing

2010 ◽  
Vol 154-155 ◽  
pp. 1761-1766 ◽  
Author(s):  
Mohsen Barmouz ◽  
M.K. Besharati Givi ◽  
Jalal Jafari
Keyword(s):  
Wear Resistance ◽  
Mechanical Behavior ◽  
Metal Matrix Composites ◽  
Friction Stir Processing ◽  
Metal Matrix ◽  
Matrix Composites ◽  
Friction Stir ◽  
Tool Pin Profile ◽  
Sic Particles ◽  
Tool Pin

Friction stir processing (FSP) is a metal-working technique that causes microstructural modification and change in the upper surface of metal components. In this work the effects of tool pin profile on the microstructure and mechanical behavior of reinforced SiC particles metal matrix composites (MMCs) produced by friction stir processing were studied. Optical microscopy (OM) and Scanning electron microscopy (SEM) was employed to carry out the microstructural observations. Vickers Microhardness Machine used for microhardness evaluation. Results show that, tool pin profile play a major role in improvement of the surface quality, SiC particles dispersion in pure copper matrix, hardness behavior and wear resistance. Two different tool pin profile (straight cylindrical and square) were used to perform the process. It was found that, straight cylindrical tool pin profile led to finer grains, uniform dispersion of SiC particles, higher microhardness and wear resistance values.

Study of Dynamic Properties on NMMCs Material Using Ansys/LS-DYNA

2008 ◽  
Vol 41-42 ◽  
pp. 61-67
Author(s):  
Li Liang ◽  
Ming Li ◽  
Chi Tay Tsai
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Dynamic Properties ◽  
Aluminum Matrix ◽  
Matrix Composites ◽  
Sic Particles ◽  
Mechanics Analysis ◽  
The Matrix ◽  
Nanostructured Metal

Dynamic properties of Nanostructured Metal Matrix Composites (NMMCs) materials consisting of nanograined aluminum matrix with nano or micro-sized ceramics particulates are calculated using Ansys/LS-DYNA in this paper. There are three conditions for the mechanics analysis involved the target with 10 vol. % SiC, 30 vol. % SiC and 50 vol. % SiC. It is assumed that the SiC particles uniformly distributed in the matrix. According to the analysis, the strength of NMMCs material is reduced, and the deformation of target is weakened by the vol. % of SiC increasing.

Structure and behavior of metal/ceramic interfaces in Ti alloy/SiC metal matrix composites

1993 ◽  
Vol 8 (5) ◽  
pp. 1158-1168 ◽  
Author(s):  
Ernest L. Hall ◽  
Ann M. Ritter
Keyword(s):  
Metal Matrix Composites ◽  
Reaction Zone ◽  
Metal Matrix ◽  
Ti Alloy ◽  
Matrix Composites ◽  
Matrix Interface ◽  
Fiber Coating ◽  
Sic Particles ◽  
Fiber Matrix Interface ◽  
Fiber Matrix

The structure and mechanical behavior of the fiber/matrix interface in Ti alloy/SCS-6 SiC metal matrix composites were studied. In these composites the interface region consists of a fiber-coating region and a metal reaction zone between the SiC fiber body and the metal matrix. The fiber coating consists of a number of zones or layers which are comprised of cubic SiC particles in a turbostratic carbon matrix. Some ambiguity remains, concerning the number of distinct layers and the size, shape, and density of the SiC particles. The effect of composite fabrication and heat treatment on the coating structure is relatively small. Studies of the metal reaction zone adjacent to the fiber in Ti alloy/SCS-6 SiC MMC's have shown that a number of discrete zones or layers form. Nearest the fiber, a zone of cubic TiC occurs, with increasing grain size with distance from the fiber. Nearest the metal matrix, a zone of Ti5Si3 forms. In high Al content alloys, an intermediate zone forms that consists of Ti2AlC or Ti3AlC. The fiber/matrix interface plays an important role during transverse tensile loading of these composites. The tensile behavior is controlled by debonding at the interface, followed by deformation of the matrix ligaments. Replica observations show that the debonding initiates and propagates within the coating layers, but is not confined to a single layer interface.

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