Strengthening via the formation of strain-induced martensite in stainless steels

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Proceedings titleMaterials Science and Engineering A
Conference13th International Conference on the Strength of Materials (ICSMA-13), Budapest, Hungary, 25-30 August 2003
Pages873881; # of pages: 9
Subjectaustenitic stainless steel; co-deformation; diffraction; martensite; TRIP
AbstractThe strengthening that results from the low-temperature formation of strain-induced martensite in austenitic stainless steel was studied. Specifically, the work hardening behaviour was characterized, as well as the spatial distribution of the martensite as a function of prior strain. Neutron diffraction measurements revealed the degree of elastic strain partitioning between the austenite and martensite. It was found that a sufficiently high initial dislocation density leads to a localization of the martensite transformation in the form of a L?ders front. The martensite acts as an elastic reinforcing phase as it supports a higher stress than the austenite tensile loading, even though the martensite co-deforms plastically with the austenite. A model was developed that predicts the volume fraction of martensite formed as a function of plastic strain.
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AffiliationNational Research Council Canada; NRC Canadian Neutron Beam Centre
Peer reviewedNo
NPARC number12328223
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Record identifierc008fa61-286b-4889-b5e8-4fc50c899760
Record created2009-09-10
Record modified2016-05-09
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