Title: Tensile Behavior of T91 Steel Over a Wide Range of Temperatures and Strain-Rate Up To 104 s1
Authors: SCAPIN MartinaPERONI LorenzoFICHERA C.CAMBRIANI ANDREA
Citation: JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE vol. 23 no. 8 p. 3007-3017
Publisher: SPRINGER
Publication Year: 2014
JRC N°: JRC88513
ISSN: 1059-9495
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC88513
DOI: 10.1007/s11665-014-1081-x
Type: Articles in periodicals and books
Abstract: High chromium ferritic/martensitic steel T91 (9% Cr, 1% Mo), on account of its radiation resistance, is a candidate material for nuclear reactor applications. Its joining by an impact method to create a cold joint is tested in the realm of scoping tests toward the safe operation of nuclear fuels, encapsulated in representative T91 materials. Hitherto, T91 mechanical characterization at high strain rates is relatively unknown, particularly, in relation to impact joining and also to nuclear accidents. In this study, the mechanical characterization of T91 steel was performed in tension by varying the strain-rate (1023 up to 104 s21) and temperature (20-800C) on dog-bone specimens, using standard testing machines or Hopkinson Bar apparati. As expected, the material is both temperature and strain-rate sensitive and different sets of parameters for the Johnson-Cook strength model were extracted via a numerical inverse procedure, in order to obtain the most suitable set to be used in this field of applications.
JRC Directorate:Nuclear Safety and Security

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