The effect of grain boundary character distribution on the mechanical properties at different strain rates of a 316L stainless steel

The effect of grain boundary character distribution on the mechanical properties at different... Grain boundary engineering was applied to a 316L stainless steel. The proportion of low-Σ coincidence site lattice boundaries was increased to more than 70% in the GBE specimen. The effect of grain boundary character distribution formed through GBE on the mechanical properties at different strain rates (4 × 10−2, 4 × 10−3, 4 × 10−4, 4 × 10−5 s−1) was studied by tensile test at room temperature. The results showed that the GBE specimens exhibited higher uniform elongation than the non-GBE specimens. With the strain rate decreasing, the uniform elongations of GBE specimens had a greater extent of increase. The local misorientation, average Schmid factor ( $$ \overline{m} $$ m ¯ ) and Taylor factor (M) in GBE and non-GBE specimens at uniform plastic deformation area were studied by using electron backscatter diffraction. The results indicate that the micro-zone strain was more uniformly distributed and the activation process of the slip system was apt to happen in the GBE specimens. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Materials Science Springer Journals

The effect of grain boundary character distribution on the mechanical properties at different strain rates of a 316L stainless steel

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Publisher
Springer US
Copyright
Copyright © 2017 by Springer Science+Business Media, LLC
Subject
Materials Science; Materials Science, general; Characterization and Evaluation of Materials; Polymer Sciences; Continuum Mechanics and Mechanics of Materials; Crystallography and Scattering Methods; Classical Mechanics
ISSN
0022-2461
eISSN
1573-4803
D.O.I.
10.1007/s10853-017-1695-0
Publisher site
See Article on Publisher Site

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