Microstructural characterization of W/Cu functionally graded materials produced by a one-step resistance sintering method

2007 ◽  
Vol 428 (1-2) ◽  
pp. 146-150 ◽  
Author(s):  
Zhang-Jian Zhou ◽  
Juan Du ◽  
Shu-Xiang Song ◽  
Zhi-Hong Zhong ◽  
Chang-Chun Ge
Keyword(s):  
Functionally Graded Materials ◽  
Microstructural Characterization ◽  
Functionally Graded ◽  
Graded Materials ◽  
One Step ◽  
Sintering Method

scholarly journals Application of X-Ray Microtomography to the Microstructural Characterization of Al-Based Functionally Graded Materials

2006 ◽  
Vol 45 ◽  
pp. 1109-1116 ◽  
Author(s):  
Alexandre Velhinho ◽  
Francisco Manuel Braz Fernandes ◽  
S.C. Ferreira ◽  
L.A. Rocha ◽  
Gerard Vignoles ◽  
...  
Keyword(s):  
Functionally Graded Materials ◽  
Metal Matrix ◽  
Microstructural Characterization ◽  
Functionally Graded ◽  
Graded Materials ◽  
X Ray ◽  
Computed Microtomography ◽  
X Ray Computed

This paper provides a brief overview of the possibilities offered by X-ray computed microtomography, and particularly synchrotron radiation X-ray microtomography, regarding metal matrix composite characterization, emphasis being placed in the case of Al-based functionally graded materials. Examples are provided concerning the characterization of the reinforcement population, interfacial properties, in-situ transformation and damage evolution. The specific needs of the technique and limitations to its widespread use are mentioned.

Incremental Melting and Solidification Process/Mechanical Characterization of Functionally Graded Al-Si Alloys

2008 ◽  
Vol 587-588 ◽  
pp. 400-404
Author(s):  
P. Pinto ◽  
L. Mazare ◽  
Delfim Soares ◽  
F.S. Silva
Keyword(s):  
Mechanical Properties ◽  
Functionally Graded Materials ◽  
Phase Distribution ◽  
Solidification Process ◽  
Functionally Graded ◽  
Graded Materials ◽  
Graded Material ◽  
Gradual Variation ◽  
Melting And Solidification

The Incremental Melting and Solidification Process (IMSP) is a relatively new field for material processing for the production of functionally graded materials. In this process a controlled liquid bath is maintained at the top of the component where new materials are added changing the components composition. Thus, a functionally graded material is obtained with a varying composition along one direction of the component. This paper deals with the influence of one of the process parameters, namely displacement rates between heating coil and mould, in order to evaluate its influence on both metallurgical and mechanical properties of different Al-Si alloys. Hardness and phase distribution, along the main castings axis, were measured. To better assess and characterize the process, two different Al-Si alloys with and without variation of chemical composition along the specimen were analysed. Results demonstrate that a gradual variation of metallurgical and mechanical properties along the component is obtained. It is also shown that Al-Si functionally graded materials can be produced by the incremental melting and solidification process. Results show that the displacement rate is very important on metallurgical and mechanical properties of the obtained alloy.

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