Critical concentration of Mg addition for plastic instabilities in Al–Mg alloys

Autor:	Ferenc Csikor, Nguyen Q. Chinh, Zs. Kovács, János Lendvai
Rok vydání:	2000
Předmět:	Materials science Mechanics of Materials Mg alloys Mechanical Engineering Indentation Metallurgy Loading rate General Materials Science Composite material Condensed Matter Physics Critical value Indentation hardness
Zdroj:	Journal of Materials Research. 15:1037-1040
ISSN:	2044-5326 0884-2914
DOI:	10.1557/jmr.2000.0147
Popis:	Plastic instabilities were investigated by the depth-sensing microhardness test in binary high-purity Al–Mg alloys with different Mg contents. During the tests the applied load was increased from 0 to 2000 mN at constant loading rate. The instabilities appeared as characteristic steps in the load–depth curves during indentation. It was shown that the occurrence and development of the plastic instabilities depend strongly on the solute content. Furthermore, the plastic instabilities occurred only when the solute concentration was larger than a critical value, C0. From room-temperature tests on Al–Mg alloys, C0 was found to be 0.86 wt% Mg. The critical concentration, which is necessary to get plastic instabilities, was also interpreted theoretically.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::53c0df33ed7cb4db49f7c3ef7a0016ab https://doi.org/10.1557/jmr.2000.0147 Zobrazit plný text záznamu Full text from SpringerLink