Structure and mechanical properties of high-manganese dual-phase steels

Terao, Hoshiaki

doi:10.1007/bf01114730

Cited by 7 publications

(1 citation statement)

References 9 publications

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“…Due to their duplex phase microstructures, DSS combine the beneficial properties of their constituents. For instance, DSS exhibit high strength and great fatigue property in corrosive environments 1 – 3 . Their excellent properties make them widely used in petro-chemical, transportation and other industries.…”

Section: Introductionmentioning

confidence: 99%

Micro-deformation evolutions of the constituent phases in duplex stainless steel during cyclic nanoindentation

Cui

Jia

Xuan

2018

Sci Rep

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Cyclic elastoplastic deformation behaviors of austenite phase and ferrite phase in a duplex stainless steel were investigate by load-controlled cyclic nanoindentation with a Berkovich indenter. During the tests, the maximum penetration depth per cycle increased rapidly with cycle number at transient state, and reached stable at quasi-steady state. Plastic dissipated energy was quantitatively proved to be the driving force for the propagation of deformation zones during cyclic nanoindentation tests. Transmission electron microscopy combined with FIB was used to reveal the deformation mechanisms of both phases underneath indents with cycles. After quasi-static single loading, nucleation and concentration of dislocations were observed in both austenite phase and ferrite phase under the indenter. After cyclic loading, dislocations propagated to further regions in both phases. Besides, slip bands were generated within single nanoindentation and propagated during the subsequent cyclic nanoindentation. The sizes of the deformation regions for both phases under the indents after cyclic indentation observed by TEM were consistent with those calculated by the expansion model of spherical cavity.

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Section: Introductionmentioning

confidence: 99%