Specimen size and grain size effects on tensile strength of Ag microwires

2011 ◽  
Vol 64 (8) ◽  
pp. 717-720 ◽  
Author(s):  
X.X. Chen ◽  
A.H.W. Ngan
Keyword(s):  
Grain Size ◽  
Tensile Strength ◽  
Size Effects ◽  
Specimen Size ◽  
Grain Size Effects

The Strength and Ductility of Ice Under Tension

1988 ◽  
Vol 110 (2) ◽  
pp. 187-191 ◽  
Author(s):  
R. W. Lee ◽  
E. M. Schulson
Keyword(s):  
Grain Size ◽  
Tensile Strength ◽  
Size Effects ◽  
Strain Rates ◽  
The Relationship ◽  
Strength And Ductility ◽  
Grain Size Effects

Tensile experiments have been performed on aggregates of equiaxed and randomly oriented ice Ih of varying grain size (1.4 to 7.9 mm) at −10°C at two strain rates, 10−3 s−1 and 10−7 s−1. At both rates, which were held constant using “feed-back” control, the tensile strength decreased with increasing grain size. This result confirms earlier work on grain size effects in which the rate randomly varied (from 0.6 × 10−6 s−1 to 3 × 10−6 s−1) from test to test. At the higher rate the ice is brittle over the complete range of grain size and its strength is given by the relationship σf = σo + kd−1/2 where σo = 0.51 MPa and k = 0.03 MPa m1/2. At the lower rate the ice is ductile over the same range of grain size and its strength is given by the relationship σf = Kd−1/2 where K = 0.050 MPa m1/2. These effects are explained quantitatively in terms of the nucleation and propagation of cracks.

Grain-Size Effects during Dynamic Recrystallization of Nickel

Metal Science ◽  
1974 ◽  
Vol 8 (1) ◽  
pp. 325-331 ◽  
Author(s):  
J. P. Sah ◽  
G. J. Richardson ◽  
C. M. Sellars
Keyword(s):  
Grain Size ◽  
Dynamic Recrystallization ◽  
Size Effects ◽  
Grain Size Effects

Modeling of Size Effects on the Flow Stress of Type 304 Stainless Steel and Application in Coining Process

2007 ◽  
Author(s):  
Gap-Yong Kim ◽  
Muammer Koc ◽  
Jun Ni
Keyword(s):  
Grain Size ◽  
Stainless Steel ◽  
Flow Stress ◽  
Size Effect ◽  
Size Effects ◽  
Specimen Size ◽  
304 Stainless Steel ◽  
Length Scales ◽  
Type 304 ◽  
Type 304 Stainless Steel

Application of microforming in various research areas has received much attention due to the increased demand for miniature metallic parts that require mass production. For the accurate analysis and design of microforming process, proper modeling of material behavior at the micro/meso-scale is necessary by considering the size effects. Two size effects are known to exist in metallic materials. One is the “grain size” effect, and the other is the “feature/specimen size” effect. This study investigated the “feature/specimen size” effect and introduced a scaling model which combined both feature/specimen and grain size effects. Predicted size effects were compared with experiments obtained from previous research and showed a very good agreement. The model was also applied to forming of micro-features by coining. A flow stress model for Type 304 stainless steel taking into consideration the effect of the grain and feature size was developed and implemented into a finite element simulation tool for an accurate numerical analysis. The scaling model offered a simple way to model the size effect down to length scales of a couple of grains and extended the use of continuum plasticity theories to micro/meso-length scales.

Grain Size Effects in Mn-Modified 0.67BiFeO3–0.33BaTiO3 Ceramics

2021 ◽  
Author(s):  
Yajun Yue ◽  
Xinzhao Xu ◽  
Man Zhang ◽  
Zhongna Yan ◽  
Vladimir Koval ◽  
...  
Keyword(s):  
Grain Size ◽  
Size Effects ◽  
Grain Size Effects

Hall measurements and grain‐size effects in polycrystalline silicon

1980 ◽  
Vol 37 (6) ◽  
pp. 544-546 ◽  
Author(s):  
Amal K. Ghosh ◽  
Albert Rose ◽  
H. Paul Maruska ◽  
Daniel J. Eustace ◽  
Tom Feng
Keyword(s):  
Grain Size ◽  
Size Effects ◽  
Polycrystalline Silicon ◽  
Hall Measurements ◽  
Grain Size Effects
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