Strain-rate behavior in tension of the tempered martensitic reduced activation steel Eurofer97

The tensile properties of the high-chromium tempered martensitic reduced activation steel Eurofer97 were determined from tests carried out over a wide range of strain-rates on cylindrical specimens. The quasi-static tests were performed with a universal electro-mechanical machine, whereas a hydro-pneumatic machine and a JRC-split Hopkinson tensile bar apparatus were used for medium and high strain-rates respectively. This tempered martensitic stainless steel showed significant strain-rate sensitivity. The constitutive behavior was investigated within a framework of dislocations dynamics model using Kock's approach. The parameters of the model were determined and then used to predict the deformation range of the tensile deformation stability. A very good agreement between the experimental results and predictions of the model was found. (C) 2011 Elsevier B.V. All rights reserved.


Published in:
Journal Of Nuclear Materials, 414, 360-366
Year:
2011
Publisher:
Elsevier
ISSN:
0022-3115
Keywords:
Laboratories:
SPC
CRPP




 Record created 2011-12-16, last modified 2018-09-13


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