Documents disponibles écrits par cet auteur

Mechanical anisotropy and deep drawing behaviour of AZ31 and ZE10 magnesium alloy sheets / Sangbong Yi in Acta materialia, Vol. 58 N° 2 (Janvier 2010) 

Public ISBD [article]  in Acta materialia > Vol. 58 N° 2 (Janvier 2010) . - pp. 592-605 Titre : Mechanical anisotropy and deep drawing behaviour of AZ31 and ZE10 magnesium alloy sheets Type de document : texte imprimé Auteurs : Sangbong Yi, Auteur ; Jan Bohlen, Auteur ; Frank Heinemann, Auteur Article en page(s) : pp. 592-605 Note générale : Métallurgie Langues : Anglais (eng) Mots-clés : Magnesium  alloys  Mechanical  properties  Texture  Deep  drawing  Dynamic  recrystallization Index. décimale : 669 Métallurgie Résumé : The influence of the initial microstructure on the deep drawability and the associated microstructural evolution in two different magnesium alloy sheets, AZ31 and ZE10, has been examined. Tensile testing at room temperature shows that the AZ31 sheet has high plastic strain ratios, r = 2–3, which are caused by strong basal-type texture. The ZE10 sheet shows lower r values, r not, vert, similar 1, as a result of its weak texture. Deep drawing experiments carried out over the temperature range 100–300 °C revealed that the ZE10 sheet can be successfully deep-drawn at lower temperatures than the AZ31 sheet. The ZE10 cups show earing despite the weak texture and low normal anisotropy, while earing of the AZ31 cups is negligible. In the ZE10 cups, deformation is accommodated mainly by left angle bracketaright-pointing angle bracket slips and by compression as well as secondary twinning. The occurrence of dynamic recrystallization is observed in successfully deep-drawn AZ31 cups. DEWEY : 669 ISSN : 1359-6454 En ligne : http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%235556%23 [...] [article] Mechanical anisotropy and deep drawing behaviour of AZ31 and ZE10 magnesium alloy sheets [texte imprimé] / Sangbong Yi, Auteur ; Jan Bohlen, Auteur ; Frank Heinemann, Auteur . - pp. 592-605. Métallurgie Langues : Anglais (eng) in Acta materialia > Vol. 58 N° 2 (Janvier 2010) . - pp. 592-605 Mots-clés : Magnesium  alloys  Mechanical  properties  Texture  Deep  drawing  Dynamic  recrystallization Index. décimale : 669 Métallurgie Résumé : The influence of the initial microstructure on the deep drawability and the associated microstructural evolution in two different magnesium alloy sheets, AZ31 and ZE10, has been examined. Tensile testing at room temperature shows that the AZ31 sheet has high plastic strain ratios, r = 2–3, which are caused by strong basal-type texture. The ZE10 sheet shows lower r values, r not, vert, similar 1, as a result of its weak texture. Deep drawing experiments carried out over the temperature range 100–300 °C revealed that the ZE10 sheet can be successfully deep-drawn at lower temperatures than the AZ31 sheet. The ZE10 cups show earing despite the weak texture and low normal anisotropy, while earing of the AZ31 cups is negligible. In the ZE10 cups, deformation is accommodated mainly by left angle bracketaright-pointing angle bracket slips and by compression as well as secondary twinning. The occurrence of dynamic recrystallization is observed in successfully deep-drawn AZ31 cups. DEWEY : 669 ISSN : 1359-6454 En ligne : http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%235556%23 [...]