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Crack tip transformation zones in austenitic stainless steel

Hallberg, Håkan LU ; Banks-Sills, Leslie LU and Ristinmaa, Matti LU (2012) In Engineering Fracture Mechanics 79. p.266-280
Abstract
Crack tip conditions in SUS 304 austenitic stainless steel are studied using a constitutive model in which the martensitic phase transformation is an integral part. The phase transformation occurring in the crack tip region gives rise to fracture toughening of the material whereby the resistance against crack initiation, as well as the macroscopic material response are strongly altered by the presence of a martensitic phase. The constitutive model employed herein permits studying the transformation zones under different isothermal conditions. Local crack tip conditions and related plastic deformation is confirmed to depend strongly on the varying extent of the martensitic phase transformation at different temperatures. The shape and size... (More)
Crack tip conditions in SUS 304 austenitic stainless steel are studied using a constitutive model in which the martensitic phase transformation is an integral part. The phase transformation occurring in the crack tip region gives rise to fracture toughening of the material whereby the resistance against crack initiation, as well as the macroscopic material response are strongly altered by the presence of a martensitic phase. The constitutive model employed herein permits studying the transformation zones under different isothermal conditions. Local crack tip conditions and related plastic deformation is confirmed to depend strongly on the varying extent of the martensitic phase transformation at different temperatures. The shape and size of the plastic and transformation zones in the neighborhood of the crack tip are obtained from numerical simulations, as well as derived analytically. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Steels, Constitutive modeling, Phase transformation, 304 Stainless steel, Transformation toughening
in
Engineering Fracture Mechanics
volume
79
pages
266 - 280
publisher
Elsevier
external identifiers
  • wos:000301276000017
  • scopus:84855191991
ISSN
1873-7315
DOI
10.1016/j.engfracmech.2011.11.004
language
English
LU publication?
yes
id
9541b372-2f65-4b03-b520-9e0d976863cd (old id 2277483)
date added to LUP
2012-01-10 13:44:20
date last changed
2017-10-01 03:01:38
@article{9541b372-2f65-4b03-b520-9e0d976863cd,
  abstract     = {Crack tip conditions in SUS 304 austenitic stainless steel are studied using a constitutive model in which the martensitic phase transformation is an integral part. The phase transformation occurring in the crack tip region gives rise to fracture toughening of the material whereby the resistance against crack initiation, as well as the macroscopic material response are strongly altered by the presence of a martensitic phase. The constitutive model employed herein permits studying the transformation zones under different isothermal conditions. Local crack tip conditions and related plastic deformation is confirmed to depend strongly on the varying extent of the martensitic phase transformation at different temperatures. The shape and size of the plastic and transformation zones in the neighborhood of the crack tip are obtained from numerical simulations, as well as derived analytically.},
  author       = {Hallberg, Håkan and Banks-Sills, Leslie and Ristinmaa, Matti},
  issn         = {1873-7315},
  keyword      = {Steels,Constitutive modeling,Phase transformation,304 Stainless steel,Transformation toughening},
  language     = {eng},
  pages        = {266--280},
  publisher    = {Elsevier},
  series       = {Engineering Fracture Mechanics},
  title        = {Crack tip transformation zones in austenitic stainless steel},
  url          = {http://dx.doi.org/10.1016/j.engfracmech.2011.11.004},
  volume       = {79},
  year         = {2012},
}