Effect of strain rate on dislocation cell size in oxygen-free high-conductivity copper during a tensile test

1992 ◽  
Vol 11 (10) ◽  
pp. 692-694 ◽  
Author(s):  
S. Thiagarajan ◽  
S. K. Varma
Keyword(s):  
Tensile Test ◽  
Strain Rate ◽  
Cell Size ◽  
Dislocation Cell ◽  
High Conductivity ◽  
Dislocation Cell Size

Coupling of Bezier-type streamline and ETMB model to predict dislocation cell size in ECAE

2020 ◽  
Vol 2 (1) ◽  
pp. 015004
Author(s):  
Afsaneh Narooei ◽  
Ghodratollah Roudini ◽  
Keivan Narooei
Keyword(s):  
Cell Size ◽  
Dislocation Cell ◽  
Dislocation Cell Size

Variation in dislocation cell size with local strain in a low alloy steel

1986 ◽  
Vol 81 ◽  
pp. 163-167 ◽  
Author(s):  
M. Nabil Bassim ◽  
R.J. Klassen
Keyword(s):  
Cell Size ◽  
Alloy Steel ◽  
Local Strain ◽  
Dislocation Cell ◽  
Low Alloy Steel ◽  
Dislocation Cell Size

The dislocation cell size and dislocation density in copper deformed at temperatures between 25 and 700°C

1972 ◽  
Vol 20 (4) ◽  
pp. 569-579 ◽  
Author(s):  
M.R. Staker ◽  
D.L. Holt
Keyword(s):  
Dislocation Density ◽  
Cell Size ◽  
Dislocation Cell ◽  
Dislocation Cell Size

Dislocation cell size in a spatially varying stress field of a crack tip region

1989 ◽  
Vol 113 ◽  
pp. 373-383 ◽  
Author(s):  
K. Jagannadham ◽  
T.C. Pollock ◽  
H.G.F. Wilsdorf
Keyword(s):  
Stress Field ◽  
Cell Size ◽  
Crack Tip ◽  
Dislocation Cell ◽  
Spatially Varying ◽  
Dislocation Cell Size

scholarly journals EBSD characterisation of grain size distribution and grain sub-structures for ferritic steel weld metals

2022 ◽  
Author(s):  
Pauli Lehto ◽  
Heikki Remes
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Cell Size ◽  
Ferritic Steel ◽  
Weighted Average ◽  
Dislocation Cell ◽  
Steel Weld ◽  
Weld Metals ◽  
Average Grain Size ◽  
Dislocation Cell Size

AbstractMicrostructural characterisation of engineering materials is required for understanding the relationships between microstructure and mechanical properties. Conventionally grain size is measured from grain boundary maps obtained using optical or electron microscopy. This paper implements EBSD-based linear intercept measurement of spatial grain size variation for ferritic steel weld metals, making analysis flexible and robust. While grain size has been shown to correlate with the strength of the material according to the Hall–Petch relationship, similar grain sizes in weld metals with different phase volume fractions can have significantly different mechanical properties. Furthermore, the solidification of the weld pool induces the formation of grain sub-structures that can alter mechanical properties. The recently developed domain misorientation approach is used in this study to provide a more comprehensive characterisation of the grain sub-structures for ferritic steel weld metals. The studied weld metals consist of varying mixtures of primary ferrite, acicular ferrite, and bainite/martensite, with large differences observed in hardness, grain size, grain morphology, and dislocation cell size. For the studied weld metals, the average dislocation cell size varied between 0.68 and 1.41 µm, with bainitic/martensitic weld metals showing the smallest sub-structures and primary ferrite the largest. In contrast, the volume-weighted average grain size was largest for the bainitic/martensitic weld metal. Results indicate that a Hall–Petch-type relationship exists between hardness and average dislocation cell size and that it partially corrects the significantly different grain size—hardness relationship observed for ferritic and bainitic/martensitic weld metals. The methods and datasets are provided as open access.

Sign in / Sign up

Export Citation Format

Share Document