scholarly journals Effects of particle shape on the thermoelastoplastic behavior of particle reinforced composites

2016 ◽  
Vol 87 ◽  
pp. 90-101 ◽  
Author(s):  
Helmut J. Böhm ◽  
Azra Rasool
Keyword(s):  
Particle Shape ◽  
Reinforced Composites ◽  
Particle Reinforced Composites

Geometrical Anisotropy in Biphase Particle Reinforced Composites

2010 ◽  
Vol 77 (4) ◽  
Author(s):  
Shivakumar I. Ranganathan ◽  
Paolo Decuzzi ◽  
Lewis T. Wheeler ◽  
Mauro Ferrari
Keyword(s):  
Composite Materials ◽  
Elastic Constants ◽  
Crucial Role ◽  
Particle Shape ◽  
Volume Fraction ◽  
Effective Stiffness ◽  
Reinforced Composites ◽  
Effective Elastic Constants ◽  
Anisotropy Index ◽  
Particle Reinforced Composites

Particle shape plays a crucial role in the design of novel reinforced composites. We introduce the notion of a geometrical anisotropy index A to characterize the particle shape and establish its relationship with the effective elastic constants of biphase composite materials. Our analysis identifies three distinct regions of A: (i) By using ovoidal particles with small A, the effective stiffness scales linearly with A for a given volume fraction α; (ii) for intermediate values of A, the use of prolate particles yield better elastic properties; and (iii) for large A, the use of oblate particles result in higher effective stiffness. Interestingly, the transition from (ii) to (iii) occurs at a critical anisotropy Acr and is independent of α.

Manufacture and Microstructures of Fe-Cr-C Hypereutectic In Situ Composites

2007 ◽  
Vol 336-338 ◽  
pp. 1406-1408 ◽  
Author(s):  
Xiao Hui Zhi ◽  
Jian Dong Xing ◽  
Yi Min Gao ◽  
Xiao Jun Wu ◽  
Xiao Le Cheng
Keyword(s):  
Hypereutectic Alloy ◽  
Reinforced Composites ◽  
In Situ Composites ◽  
In Situ Composite ◽  
Particle Reinforced Composites ◽  
Primary Carbides

In the present study, a Fe-Cr-C hypereutectic alloy was prepared from industry-grade materials and subjected to modification and fluctuation, through which new types of particle reinforced composites, hypereutectic in-situ composite, was generated. The structures of the composite modified or not with the range of fluctuation addition from 0% to 2.8wt.%, were investigated. The primary carbides were refined with the addition of modifying agents and fluctuations. Increasing the amount of fluctuation resulted in finer primary carbides. At 1380oC, with the addition of modifying agents and 2.8wt.% fluctuation addition, the structure was well modified.

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