Phase transitions in rapidly solidified stainless steels cathodically hydrogen charged

Manor-Minkovitz, E.; Eliezer, D.

doi:10.1007/bf02656542

Cited by 1 publication

(2 citation statements)

References 25 publications

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“…In accordence with the Stoner-Wohlforth theory of coherent rotation of the magnetization vector within a particle that exhibits axial anisotropy, the coercivity of the materials can be expressed as [5] where H c is the coercivity, ϽKϾ is an effective average anisotropy energy of the cluster, and o M s is the saturation magnetization of martensites. ϽKϾ is not the simple single ion anisotropy, but is a form of anisotropy that must increase with the cluster size, so that for small clusters, the anisotropy is negligible because it will be overwhelmed by the exchange interaction, as described in the random anisotropy model for small particles with a strong, long-range exchange interaction.…”

Section: Discussionmentioning

confidence: 99%

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Ferromagnetic properties of deformation-induced martensite transformation in AISI 304 stainless steel

Mitra

Srivastava

et al. 2004

Metall Mater Trans A

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Ferromagnetic properties of plastically deformed AISI 304ss have been studied using magnetic hysteresis and Barkhausen emissions methods. The present study has been concentrated on low volume fraction of martensite, i.e., below 58 pct, as compared to the available literature for a higher percentage of martensite. In measured materials, the coercivity increased with deformation and had a tendency to go toward saturation value. A linear increase in remanence with the deformation was observed. A large number of small amplitude of Barkhausen emissions were found at low percentage of martensite, indicating that magnetization rotation took place within a small region. However, large amplitude Barkhausen emissions were observed with the increase of deformations. Angular variation of Barkhausen emissions indicated the formation of rolling texture within the materials. A model has been proposed to explain the results. At the initial stage, small martensite clusters are formed, which grow with the deformation, and the intracluster exchange interaction becomes predominant. With the increase of deformation, martensite volume fraction increases. In this process, existing clusters grow and new clusters are formed. As a result, martensite clusters come closer and intercluster exchange interaction becomes important.

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Section: Discussionmentioning

confidence: 99%

“…[1][2][3][4] Besides deformation, hydrogen charging [5,6] and ion irradiation [7,8] also induce martensite in such steel. AISI 304ss is one of such steels, which is widely used as a structural component for its excellent formability, mechanical behavior, and superior corrosion resistance properties.…”

Section: Introductionmentioning

confidence: 99%

Ferromagnetic properties of deformation-induced martensite transformation in AISI 304 stainless steel

Mitra

Srivastava

et al. 2004

Metall Mater Trans A

View full text Add to dashboard Cite

show abstract

Phase transitions in rapidly solidified stainless steels cathodically hydrogen charged

Cited by 1 publication

References 25 publications

Ferromagnetic properties of deformation-induced martensite transformation in AISI 304 stainless steel

Ferromagnetic properties of deformation-induced martensite transformation in AISI 304 stainless steel

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