Influence of nitride formers on strength and impact behaviour of hot rolled steel

Autor:	A. Williamson, H. Su, B. Mintz, W. B. Morrison
Rok vydání:	2007
Předmět:	Materials science Silicon Mechanical Engineering Transition temperature Metallurgy chemistry.chemical_element Nitride Condensed Matter Physics Hot rolled chemistry Mechanics of Materials Aluminium Ferrite (iron) General Materials Science Grain boundary
Zdroj:	Materials Science and Technology. 23:63-71
ISSN:	1743-2847 0267-0836
Popis:	The extent to which the nitride formers B, Zr, Ti and Al can be used to improve the properties of C–Mn hot rolled steels has been investigated. Of these nitride formers, a high aluminium addition, ∼0·2%, was the most effective, giving extremely good impact properties with no loss in strength. An impact transition temperature as low as −100°C can be obtained with this Al addition in a silicon killed 0·1%C, 1·4%Mn steel. It is believed that the aluminium may be behaving in a similar manner to silicon and that the improvement in impact behaviour is most likely due to a reduction in the gradient of the Hall–Petch strength–impact relationship, i.e. the k y value, owing to the removal of the interstitials which segregate to the ferrite grain boundaries. Further work is required to examine this hypothesis.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::eba0f1138fd1697769b91f9546cf54a9 https://doi.org/10.1179/174328407x158415 Zobrazit plný text záznamu Plný text ve formátu PDF