Grain orientation dependence of nanoindentation and deformation-induced martensitic phase transformation in neutron irradiated AISI 304L stainless steel

We studied the mechanical properties of a neutron irradiated AISI 304L stainless steel using nanoindentation with respect to crystallographic grain orientation. After neutron irradiation, {110} planes exhibit slightly larger increase in hardness and modulus compared to {100} and {111} planes. Nanoin...

Full description

Saved in:
Bibliographic Details
Published inMaterialia Vol. 5; no. C; p. 100208
Main Authors Mao, Keyou S., Sun, Cheng, Huang, Yina, Shiau, Ching-Heng, Garner, Frank A., Freyer, Paula D., Wharry, Janelle P.
Format Journal Article
LanguageEnglish
Published Netherlands Elsevier B.V 01.03.2019
Elsevier
Subjects
AISI 304L stainless steel
Grain orientation
Nanoindentation
Neutron irradiation
Phase transformation
Phase transformation
Neutron irradiation
AISI 304L stainless steel
Grain orientation
Nanoindentation
Online AccessGet full text

Cover

More Information
Summary:We studied the mechanical properties of a neutron irradiated AISI 304L stainless steel using nanoindentation with respect to crystallographic grain orientation. After neutron irradiation, {110} planes exhibit slightly larger increase in hardness and modulus compared to {100} and {111} planes. Nanoindentation-induced twinning occurs in the unirradiated specimen, while austenite-to-martensite phase transformation arises in its irradiated counterpart. Deformation-induced martensitic transformation is related to the Gibbs free energy associated with the irradiation-induced voids, compensating the surface energy necessary to create martensite laths. [Display omitted]
Bibliography:USDOE
AC07-051D14517; AC07- 051D14517; NE0008525
ISSN:2589-1529
2589-1529
DOI:10.1016/j.mtla.2019.100208