Analysis of the twin spacing and grain size effects on mechanical properties in hierarchically nanotwinned face-centered cubic metals based on a mechanism-based plasticity model

2015 ◽  
Vol 76 ◽  
pp. 162-179 ◽  
Author(s):  
Linli Zhu ◽  
Shaoxing Qu ◽  
Xiang Guo ◽  
Jian Lu
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Size Effects ◽  
Face Centered Cubic ◽  
Plasticity Model ◽  
Cubic Metals ◽  
Face Centered ◽  
Twin Spacing ◽  
Grain Size Effects

Grain size effects on the electric and mechanical properties of submicro BaTiO3 ceramics

2020 ◽  
Vol 40 (2) ◽  
pp. 391-400 ◽  
Author(s):  
Yun Chen ◽  
Huihua Ye ◽  
Xusheng Wang ◽  
Yanxia Li ◽  
Xi Yao
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Size Effects ◽  
Grain Size Effects

Size Effects in Thin Face-Centered Cubic Metals for Different Complex Forming Loadings

2013 ◽  
Vol 44 (12) ◽  
pp. 5478-5487 ◽  
Author(s):  
Pierre-Antoine Dubos ◽  
Eric Hug ◽  
Simon Thibault ◽  
Mohamed Ben Bettaieb ◽  
Clément Keller
Keyword(s):  
Size Effects ◽  
Face Centered Cubic ◽  
Cubic Metals ◽  
Face Centered

Composition and grain size effects on the structural and mechanical properties of CuZr nanoglasses

2014 ◽  
Vol 116 (4) ◽  
pp. 043522 ◽  
Author(s):  
Sara Adibi ◽  
Paulo S. Branicio ◽  
Yong-Wei Zhang ◽  
Shailendra P. Joshi
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Size Effects ◽  
Grain Size Effects

Plasticity and Size Effects in High Purity Cobalt: An Experimental Study

2016 ◽  
Vol 879 ◽  
pp. 560-565
Author(s):  
Gwendoline Fleurier ◽  
Mayerling Martinez ◽  
Pierre Antoine Dubos ◽  
Eric Hug
Keyword(s):  
Size Effects ◽  
Threshold Value ◽  
Cubic Phase ◽  
Face Centered Cubic ◽  
Tem Analysis ◽  
Cubic Metals ◽  
Hexagonal Close Packed ◽  
A Value ◽  
Face Centered ◽  
Two Phases

The occurrence of size effects in cobalt was examined by the analysis of mechanical properties of samples with thickness t, in a large range of grain size d giving a number of grains across the thickness t/d. On Hall-Petch plots, from the very beginning of plastic strain, two linear behaviors are notable: the polycrystalline one for higher t/d and the multicrystalline one for lower t/d in which the flow stress is strongly reduced. (t/d)c is the threshold value between the two behaviors taking a value of around 14. This high value is directly linked to the low stacking fault energy of cobalt. The microstructure of the polycrystalline samples exhibits a strong basal texture and a small proportion of a secondary face-centered cubic phase in a hexagonal close-packed main phase was evidenced. TEM analysis enables to characterize the dislocations and the stacking faults present in the two phases. To complete the analysis, two plasticity stages can be distinguished: stage A corresponding to dislocations gliding and stage B driven by twinning. Size effects in cobalt are found to occur during gliding process and could be related to surface effects as previously shown in face-centered cubic metals.

Grain size effects of tungsten powder on the micro-structure and mechanical properties of tungsten-based alloys

2019 ◽  
Vol 754 ◽  
pp. 216-223 ◽  
Author(s):  
M.M. Wang ◽  
Z.M. Xie ◽  
H.W. Deng ◽  
J.F. Yang ◽  
Y.K. Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Size Effects ◽  
Tungsten Powder ◽  
Micro Structure ◽  
Grain Size Effects
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