# 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

, Volume 53 (4) – Oct 16, 2017

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

J Mater Sci (2018) 53:2844–2858 METALS Metals The effect of grain boundary character distribution on the mechanical properties at different strain rates of a 316L stainless steel 1 1,2 1,3, 1,2 Zhen Zhuo , Shuang Xia , Qin Bai *, and Bangxin Zhou School of Materials Science and Engineering, Shanghai University, Shanghai 200072, People’s Republic of China State Key Laboratory of Advanced Special Steel, Shanghai University, Shanghai 200072, People’s Republic of China Key Laboratory for Microstructures, Shanghai University, P.O. Box 129, 99 Shangda Road, Shanghai 200444, People’s Republic of China Received: 26 June 2017 ABSTRACT Accepted: 9 October 2017 Grain boundary engineering was applied to a 316L stainless steel. The pro- Published online: portion of low-R coincidence site lattice boundaries was increased to more than 16 October 2017 70% in the GBE specimen. The effect of grain boundary character distribution formed through GBE on the mechanical properties at different strain rates -2 -3 -4 -5 -1 Springer Science+Business (4 9 10 ,4 9 10 ,4 9 10 ,4 9 10 s ) was studied by tensile test at room temperature. The results showed that the GBE specimens exhibited higher Media, LLC 2017 uniform elongation than the non-GBE specimens. With the strain rate decreas- ing, the uniform elongations of GBE specimens had a greater extent of increase. The local misorientation, average Schmid factor (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. by industry, the need to further improve the perfor- Introduction mance of stainless steels should be considered. In Stainless steels exhibit a combination of good corro- polycrystalline materials, the grain boundaries (GBs) sion resistance and mechanical...

/lp/springer_journal/the-effect-of-grain-boundary-character-distribution-on-the-mechanical-1YTNoJb0JS
Publisher
Springer Journals
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

### Abstract

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.

### Journal

Journal of Materials ScienceSpringer Journals

Published: Oct 16, 2017

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