Reveal the viscoplastic behaviour and microstructure evolution of stainless steel 316L
File(s)
Published version
Author(s)
Jiang, Jun
Lu, Qiong
Zhang, Chi
Aucott, Lee
Wang, Wei
Type
Journal Article
Abstract
Stainless steel 316L is a widely used structural material in the nuclear industry because of its excellent corrosion resistance and mechanical properties. However, very little research can be found on its viscoplastic behaviour and microstructure evolution at warm and hot deformation conditions, which hinder the possible application of advanced manufacturing technologies for producing complex parts, such as superplastic forming or hydroforming. The aims of this study are to explore stainless steel 316L’s viscoplastic behaviour, to determine its strain rate sensitivities, and to reveal its underlying microstructure evolution; this will allow appropriate manufacturing (forming) technologies and the optimal forming condition to be determined. Hence, isothermal tensile tests at 700 °C, 800 °C, 900 °C, and 1000 °C at strain rates of 0.01 s−1 and 0.001 s−1 have been conducted. Moreover, the corresponding microstructure evolution, including the grain orientation and geometrically necessary dislocation density, has been revealed by the electron backscatter diffraction method. The data show the viscoplastic behaviour of stainless steel 316L under various thermomechanical deformation conditions and how microstructure evolution influences the viscoplastic flow stress.
Date Issued
2022-10-11
Date Acceptance
2022-09-30
Citation
Materials, 2022, 15 (20)
ISSN
1996-1944
Journal / Book Title
Materials
Volume
15
Issue
20
Copyright Statement
© 2022 by the authors.
Licensee MDPI, Basel, Switzerland.
This article is an open access article
distributed under the terms and
conditions of the Creative Commons
Attribution (CC BY) license (https://
creativecommons.org/licenses/by/
4.0/).
Licensee MDPI, Basel, Switzerland.
This article is an open access article
distributed under the terms and
conditions of the Creative Commons
Attribution (CC BY) license (https://
creativecommons.org/licenses/by/
4.0/).
License URL
Sponsor
United Kingdom Atomic Energy Authority
Grant Number
11976/2040898
Subjects
austenitic stainless steel 316L
large grain size
recrystallization
viscoplasticity
03 Chemical Sciences
09 Engineering
Publication Status
Published
Article Number
ARTN 7064