Documents disponibles écrits par cet auteur

On the applicability of high strength self-tapping aluminium bolts in magnesium nut materials for automotive applications / G. Gerstmayr in Materials and corrosion, Vol. 61 N° 5 (Mai 2010) 

Public ISBD [article]  in Materials and corrosion > Vol. 61 N° 5 (Mai 2010) . - pp. 379–387 Titre : On the applicability of high strength self-tapping aluminium bolts in magnesium nut materials for automotive applications Type de document : texte imprimé Auteurs : G. Gerstmayr, Auteur ; G. Mori, Auteur ; H. Leitner, Auteur Année de publication : 2010 Article en page(s) : pp. 379–387 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : galvanic  corrosion;  high  strength  aluminium  alloys;  stress  corrosion  cracking Résumé : High strength aluminium bolts made of AW 6056 T6, AW 7075 T6 and T79 have been investigated regarding the applicability in magnesium nut materials for automotive applications. With respect to galvanic corrosion all combinations of aluminium bolts with magnesium parts show superior corrosion properties when compared to galvanised steel bolts connected to magnesium. With respect to stress corrosion cracking (SCC) no aluminium bolt in contact with magnesium failed due to SCC. This is because of cathodic protection of aluminium alloy through magnesium. Even peak-tempered highest strengthened T6 7xxx aluminium bolts can be used for automotive applications when compressive residual stresses are present in the thread root of the bolts. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.200905409/abstract [article] On the applicability of high strength self-tapping aluminium bolts in magnesium nut materials for automotive applications [texte imprimé] / G. Gerstmayr, Auteur ; G. Mori, Auteur ; H. Leitner, Auteur . - 2010 . - pp. 379–387. Génie mécanique Langues : Anglais (eng) in Materials and corrosion > Vol. 61 N° 5 (Mai 2010) . - pp. 379–387 Mots-clés : galvanic  corrosion;  high  strength  aluminium  alloys;  stress  corrosion  cracking Résumé : High strength aluminium bolts made of AW 6056 T6, AW 7075 T6 and T79 have been investigated regarding the applicability in magnesium nut materials for automotive applications. With respect to galvanic corrosion all combinations of aluminium bolts with magnesium parts show superior corrosion properties when compared to galvanised steel bolts connected to magnesium. With respect to stress corrosion cracking (SCC) no aluminium bolt in contact with magnesium failed due to SCC. This is because of cathodic protection of aluminium alloy through magnesium. Even peak-tempered highest strengthened T6 7xxx aluminium bolts can be used for automotive applications when compressive residual stresses are present in the thread root of the bolts. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.200905409/abstract

Splitting phenomenon in the precipitation evolution in an Fe–Ni–Al–Ti–Cr stainless steel / H. Leitner in Acta materialia, Vol. 58 N° 4 (Fevrier 2010) 

Public ISBD [article]  in Acta materialia > Vol. 58 N° 4 (Fevrier 2010) . - pp. 1261–1269 Titre : Splitting phenomenon in the precipitation evolution in an Fe–Ni–Al–Ti–Cr stainless steel Type de document : texte imprimé Auteurs : H. Leitner, Auteur ; M. Schober, Auteur ; R. Schnitzer, Auteur Année de publication : 2011 Article en page(s) : pp. 1261–1269 Note générale : Métallurgie Langues : Anglais (eng) Mots-clés : Maraging  steel  Atom  probe  tomography  Precipitates Résumé : The evolution of precipitation and mechanical properties of an Fe–Ni–Al–Ti–Cr stainless steel was studied during ageing at 525 °C. Atom probe tomography and transmission electron microscopy were applied to follow the microstructural evolution. An initial hardening reaction, which is remarkable in terms of extent, is reported to be caused by the formation of complex multi-component clusters. They are composed mainly of Ni, Al and Ti. After ageing to peak hardness (3 h), splitting of these clusters into spherical and elongated particles was observed. Based on the chemical composition, the spherical precipitates were identified to be of type NiAl B2, and the elongated particles were associated with the η-phase (Ni3(Ti, Al)). Βoth types of precipitates contribute to the strength of the material. DEWEY : 669 ISSN : 1359-6454 En ligne : http://www.sciencedirect.com/science/article/pii/S1359645409007241 [article] Splitting phenomenon in the precipitation evolution in an Fe–Ni–Al–Ti–Cr stainless steel [texte imprimé] / H. Leitner, Auteur ; M. Schober, Auteur ; R. Schnitzer, Auteur . - 2011 . - pp. 1261–1269. Métallurgie Langues : Anglais (eng) in Acta materialia > Vol. 58 N° 4 (Fevrier 2010) . - pp. 1261–1269 Mots-clés : Maraging  steel  Atom  probe  tomography  Precipitates Résumé : The evolution of precipitation and mechanical properties of an Fe–Ni–Al–Ti–Cr stainless steel was studied during ageing at 525 °C. Atom probe tomography and transmission electron microscopy were applied to follow the microstructural evolution. An initial hardening reaction, which is remarkable in terms of extent, is reported to be caused by the formation of complex multi-component clusters. They are composed mainly of Ni, Al and Ti. After ageing to peak hardness (3 h), splitting of these clusters into spherical and elongated particles was observed. Based on the chemical composition, the spherical precipitates were identified to be of type NiAl B2, and the elongated particles were associated with the η-phase (Ni3(Ti, Al)). Βoth types of precipitates contribute to the strength of the material. DEWEY : 669 ISSN : 1359-6454 En ligne : http://www.sciencedirect.com/science/article/pii/S1359645409007241