Résumé
ISO 28079:2009 specifies a method for measuring the Palmqvist toughness of hardmetals and cermets at room temperature by an indentation method. ISO 28079:2009 applies to a measurement of toughness, called Palmqvist toughness, calculated from the total length of cracks emanating from the corners of a Vickers hardness indentation, and it is intended for use with metal-bonded carbides and carbonitrides (normally called hardmetals, cermets or cemented carbides). The test procedures proposed in ISO 28079:2009 are intended for use at ambient temperatures, but can be extended to higher or lower temperatures by agreement. The test procedures proposed in ISO 28079:2009 are also intended for use in a normal laboratory-air environment. They are not intended for use in corrosive environments, such as strong acids or seawater.
Informations générales
-
État actuel: PubliéeDate de publication: 2009-07Stade: Norme internationale à réviser [90.92]
-
Edition: 1
-
Comité technique :ISO/TC 119/SC 4
- RSS mises à jour
Cycle de vie
-
Actuellement
-
Sera remplacée par
ProjetISO/DIS 28079