Strength of AISI 316L in torsion at high temperature (Articolo in rivista)

Type
Label
  • Strength of AISI 316L in torsion at high temperature (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.msea.2007.05.089 (literal)
Alternative label
  • G.ANGELLA, B.P.WYNNE,W.M.RAINFORTH, J.H.BEYNON (2008)
    Strength of AISI 316L in torsion at high temperature
    in Materials science & engineering. A, Structural materials: properties, microstructure and processing
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • G.ANGELLA, B.P.WYNNE,W.M.RAINFORTH, J.H.BEYNON (literal)
Pagina inizio
  • 257 (literal)
Pagina fine
  • 267 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • A 475 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Institute IMMPETUS, Department of Engineering Materials, The University of Sheffield, Sheffield (UK) Istituto IENI-CNR, U.O.S. Milano (Italy) Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, Hawthorn (Australia) (literal)
Titolo
  • Strength of AISI 316L in torsion at high temperature (literal)
Abstract
  • Hot torsion flow behaviour of 30 mu m grained AISI 316L stainless steel was investigated in the range of temperatures 850-1100 degrees C with equivalent strain rates 0.0001-0.006s(-1). For temperatures higher than 900 degrees C the material presented an unusual linear relationship at low strains between equivalent stress, sigma(Eq), and equivalent strain, epsilon(Eq), whilst at 850 degrees C a parabolic sigma(Eq)-epsilon(Eq) relationship was observed. The flow behaviour of 100 mu m grained AISI 316L stainless steel torsionally deformed at 1000 degrees C with equivalent strain rate of 0.006s(-1) was reported to follow the expected parabolic sigma(Eq)-epsilon(Eq) relationship and produced a significantly higher flow stress than the 30 mu m grained material (about 40% higher at 0.5 equivalent strain). In both materials an unusual grain shape evolution from pre-deformation equiaxed to rhomboidal was observed during torsion, which was rationalised [G. Angella, B.P. Wynne, W.M. Rainforth, J.H. Beynon, Acta Mater. 53 (2005) 1263] in terms of strain induced grain boundary migration (SIGBM) combined with the torsion stress field. A qualitative model is proposed to describe the flow behaviour of the AISI 316L stainless steel based on the unusual grain structure evolution and, in turn, on SIGBM. (literal)
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