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Article Dans Une Revue Scripta Materialia Année : 2010

Damage observation in a high-manganese austenitic TWIP steel by synchrotron radiation computed tomography

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Résumé

Internal damage below the fracture surface of a multiaxial specimen made of twinning-induced plasticity (TWIP) steel was observed by three-dimensional X-ray microtomography as very elongated “primary” voids. Specific tools for the local damage analysis were developed. A gradient in void volume fraction was measured from the fracture surface down to the bulk of the scanned volume (from not, vert, similar0.06% to <0.02%). However, the fracture surface is mainly composed of tiny secondary dimples (>90% in area fraction), indicating strongly localized final fracture.
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hal-00541294 , version 1 (30-11-2010)

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Julie Lorthios, Franck N'Guyen, Anne-Françoise Gourgues-Lorenzon, Thilo F. Morgeneyer, P. Cugy. Damage observation in a high-manganese austenitic TWIP steel by synchrotron radiation computed tomography. Scripta Materialia, 2010, 63, pp.1220-1223. ⟨10.1016/j.scriptamat.2010.08.042⟩. ⟨hal-00541294⟩
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