Deformation properties of austenitic stainless steels with different stacking fault energies

Molnar, DavidHögskolan Dalarna,Materialteknik,KTH,Tillämpad materialfysik,Materials Science Group, Dalarna University, Falun, SE-791 88, Sweden,Dalarna Univ, Mat Sci Grp, SE-79188 Falun, Sweden;Royal Inst Technol, Dept Mat Sci & Engn, Appl Mat Phys, SE-10044 Stockholm, Sweden (author)

QC 20190528
In FCC metals a single parameter – stacking fault energy (SFE) – can help to predict the expectable way of deformation such as martensitic deformation, deformation twinning or pure dislocation glide. At low SFE one can expect the perfect dislocations to dissociate into partial dislocations, but at high SFE this separation is more restricted. The role of the magnitude of the stacking fault energy on the deformation microstructures and tensile behaviour of different austenitic steels have been investigated using uniaxial tensile testing and electron backscatter diffraction (EBSD). The SFE was determined by using quantum mechanical first-principles approach. By using plasticity models we make an attempt to explain and interpret the different strain hardening behaviour of stainless steels with different stacking fault energies.

Engberg, GöranHögskolan Dalarna,Materialteknik,Dalarna Univ, Mat Sci Grp, SE-79188 Falun, Sweden(Swepub:du)gen (author)
Li, WeiKTH,Tillämpad materialfysik,Royal Inst Technol, Dept Mat Sci & Engn, Appl Mat Phys, SE-10044 Stockholm, Sweden(Swepub:kth)u1q7p6e9 (author)
Vitos, LeventeUppsala universitet,KTH,Tillämpad materialfysik,Department of Physics and Astronomy, Division of Materials Theory, Uppsala, SE-75120, Sweden; Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, Budapest, H-1525, Hungary,Materialteori,Royal Inst Technol, Dept Mat Sci & Engn, Appl Mat Phys, SE-10044 Stockholm, Sweden;Wigner Res Ctr Phys, Inst Solid State Phys & Opt, H-1525 Budapest, Hungary(Swepub:uu)lvi21721 (author)
Högskolan DalarnaMaterialteknik (creator_code:org_t)

In:Materials Science ForumSwitzerland : Trans Tech Publications Ltd941, s. 190-197, s. 190-1970255-54761662-9752
In:Mater. Sci. ForumSwitzerland : Trans Tech Publications Ltd941, s. 190-197, s. 190-19797830357120879783035732085

By the author/editor: Molnar, David; Engberg, Göran; Li, Wei; Vitos, Levente

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Materials Engine ...; and Metallurgy and M ...

By the university: Högskolan Dalarna; Royal Institute of Technology; Uppsala University

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