Pantry

Pang, Derek

doi:10.31979/etd.pydk-c57j

Cited by 1 publication

(1 citation statement)

References 7 publications

(9 reference statements)

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“…For practical applications the authors recommended to consider only lattice planes for (residual) stress analysis which have no or only a weak anisotropic effect. In accordance with [3,4] for fcc materials the {111}, {311} and {422} planes and for bcc materials the {110} or {211} planes are less prone to plastic anisotropy effects. In preliminary studies on load partitioning in duplex steels we noticed that crystallographic texture might have a strong impact on the plastic anisotropy.…”

Section: Introductionsupporting

confidence: 70%

Neutron Strain Scanning of Duplex Steel Subjected to 4-Point-Bending with Particular Regard to the Strain Free Lattice Parameter D0

Pulvermacher

Gibmeier

Šaroun

et al. 2018

Materials Research Proceedings

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Neutronographic residual stress analysis on multiphase materials is challenging with regard to phase-specific micro residual stresses and to the consideration of an appropriate stress free lattice parameter for meaningful lattice strain calculation. Even in case of randomly textured materials stress analysis becomes more elaborate due to plastic anisotropy effects. According to literature for stress analysis using neutron diffraction lattice planes should be chosen that are less prone to plastic anisotropy. These are the {311} austenite and the {220} ferrite planes in case of duplex steels. Here, we report about phase-specific in-situ neutron strain scanning at SALSA@ILL, Grenoble during defined 4-point-bending of duplex steel X2CrNiMoN22-5-3 using exactly these two recommended diffraction lines. It is shown that due to the local texture of the bending bars, which was cut from a hot rolled cylindrical rod, strong plastic anisotropy was determined. This effect must be taken into account for diffraction based residual stress analysis to prevent from erroneous stress determination.

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Section: Introductionsupporting

confidence: 70%