Skip to Main content Skip to Navigation
Journal articles

Damage development in low alloy TRIP-aided steels during air-bending

Abstract : In order to optimize the metallurgical quality of advanced high strength steels for automotive applications, the present study aims at understanding damage mechanisms involved in air-bending of two low alloy TRansformation Induced Plasticity (TRIP)-aided steels. Air-bending tests were performed together with metallographic investigations of damage development in bent specimens. In order to assess the role of hard bands induced by chemical segregations, air-bending tests on specimens with various locations of the main hard band (with respect to the neutral fibre) were performed. Cracking initiates from the outer surface or from just below, mainly by decohesion between ferrite and secondary (martensite) phases, at hard bands located close to the outer surface. From these examinations, together with a simple kinematics analysis of bending, a quantitative relationship between cracking, local thickness of hard band and local "mesoscopic" strain is proposed.
Document type :
Journal articles
Complete list of metadata

https://hal-mines-paristech.archives-ouvertes.fr/hal-00592250
Contributor : Bibliothèque Umr7633 <>
Submitted on : Wednesday, May 11, 2011 - 5:16:18 PM
Last modification on : Tuesday, February 16, 2021 - 3:22:06 PM

Identifiers

Citation

Delphine Reche, T. Sturel, Olivier Bouaziz, A. Col, Anne-Françoise Gourgues-Lorenzon. Damage development in low alloy TRIP-aided steels during air-bending. Materials Science and Engineering: A, Elsevier, 2011, 528, pp.5241-5250. ⟨10.1016/j.msea.2011.03.042⟩. ⟨hal-00592250⟩

Share

Metrics

Record views

338