Length-scale-dependent strengthening of particle-reinforced metal matrix composites with strain gradient plasticity

2013 ◽  
Vol 27 (4) ◽  
pp. 1071-1079
Author(s):  
Yeong Sung Suh ◽  
Seung Song ◽  
Moon Shik Park
Keyword(s):  
Metal Matrix Composites ◽  
Strain Gradient ◽  
Metal Matrix ◽  
Strain Gradient Plasticity ◽  
Length Scale ◽  
Matrix Composites ◽  
Gradient Plasticity

scholarly journals Interface Cracking and Particulate Size Effect in Particle-Reinforced Metal-Matrix Composites

2008 ◽  
Vol 33-37 ◽  
pp. 591-596 ◽  
Author(s):  
Yue Guang Wei ◽  
Tie Ping Li ◽  
Hai Ou Xie
Keyword(s):  
Metal Matrix Composites ◽  
Strain Gradient ◽  
Metal Matrix ◽  
Ceramic Particle ◽  
Strain Gradient Plasticity ◽  
Experimental Result ◽  
Matrix Composites ◽  
Gradient Plasticity ◽  
Particulate Size ◽  
Interface Cracking

The mechanical behaviors of the ceramic particle-reinforced metal matrix composites are modeled based on the conventional theory of mechanism-based strain gradient plasticity presented by Huang et al. Two cases of interface features with and without the effects of interface cracking will be analyzed, respectively. Through comparing the result based on the interface cracking model with experimental result, the effectiveness of the present model can be evaluated. Simultaneously, the length parameters included in the strain gradient plasticity theory can be obtained.

On the homogenization of metal matrix composites using strain gradient plasticity

2014 ◽  
Vol 30 (2) ◽  
pp. 175-190 ◽  
Author(s):  
Reza Azizi ◽  
Christian F. Niordson ◽  
Brian Nyvang Legarth
Keyword(s):  
Metal Matrix Composites ◽  
Strain Gradient ◽  
Metal Matrix ◽  
Strain Gradient Plasticity ◽  
Matrix Composites ◽  
Gradient Plasticity

Strain gradient plasticity to study hardness behavior of magnetite (Fe3O4) under multicyclic indentation

2009 ◽  
Vol 24 (3) ◽  
pp. 749-759 ◽  
Author(s):  
D. Chicot ◽  
F. Roudet ◽  
V. Lepingle ◽  
G. Louis
Keyword(s):  
Strain Gradient ◽  
Peak Load ◽  
Scale Factor ◽  
Strain Gradient Plasticity ◽  
Dislocation Network ◽  
Length Scale ◽  
Relevant Parameter ◽  
Characteristic Scale ◽  
Gradient Plasticity ◽  
Scale Length

The hardness of a material is generally affected by the indentation size effect. The strain gradient plasticity (SGP) theory is largely used to study this load dependence because it links the hardness to the intrinsic properties of the material. However, the characteristic scale-length is linked to the macrohardness, impeding any sound discussion. To find a relevant parameter, we suggest introducing a hardness length-scale factor that only depends on the shear modulus and the Burgers vector of the material and is easily calculable from the relation of the SGP theory. The variation of the hardness length-scale factor is thereafter used to discuss the hardness behavior of a magnetite crystal, the objective being to study the effect of the cumulative plasticity resulting from cyclic indentation. As a main result, the hardness length-scale factor is found to be constant by applying repeated cycles at a constant peak load whereas the macrohardness and the characteristic scale-length are both cycle dependent. When using incremental loads, the hardness length-scale factor monotonically decreases between two limits corresponding to those obtained at high and low loading rates, while the dwell-load duration increases. The physical meaning of such behavior is based on the modification of the dislocation network during the indentation process depending on the deformation rate.

Material-length-scale-controlled nanoindentation size effects due to strain-gradient plasticity

2003 ◽  
Vol 51 (15) ◽  
pp. 4461-4469 ◽  
Author(s):  
Minhua Zhao ◽  
William S. Slaughter ◽  
Ming Li ◽  
Scott X. Mao
Keyword(s):  
Strain Gradient ◽  
Size Effects ◽  
Strain Gradient Plasticity ◽  
Length Scale ◽  
Gradient Plasticity ◽  
Material Length Scale ◽  
Material Length

Evolution of the length scale in strain gradient plasticity

2019 ◽  
Vol 112 ◽  
pp. 220-241 ◽  
Author(s):  
Carl F.O. Dahlberg ◽  
Magnus Boåsen
Keyword(s):  
Strain Gradient ◽  
Strain Gradient Plasticity ◽  
Length Scale ◽  
Gradient Plasticity

Length scale effect on mechanical behavior due to strain gradient plasticity

2001 ◽  
Vol 303 (1-2) ◽  
pp. 241-249 ◽  
Author(s):  
D.-M. Duan ◽  
N.Q. Wu ◽  
W.S. Slaughter ◽  
Scott X. Mao
Keyword(s):  
Mechanical Behavior ◽  
Scale Effect ◽  
Strain Gradient ◽  
Strain Gradient Plasticity ◽  
Length Scale ◽  
Gradient Plasticity
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