Deep cryogenic treatment is a special kind of bulk hardening heat treatment performed on a big variety of tool and carburized steels, to improve mechanical properties and wear resistance. The mai reason for this is the complete transformation from austenite into martensite plus the formation of submicrometric carbides dispersed in the tempered martensitic structure. The greatest improvement in properties is obtained by carrying out the deep cryogenic treatment between quenching and tempering. However, a significant improvement can be obtained even by treating the tools at the end of the usual heat treatment cycle, i.e. the finished tools. This last solution is more flexible than the other one and can extend the use of the treatment to many practical applications. In order to check the potential of deep cryogenic treatment on the performance of the finished products, an investigation was carried out on the AISI M2 high speed steel quenched, tempered and deep cryogenically treated. The findings shows that the cryogenic treatment promotes the precipitation of submicrometric carbides, that increment wear resistance and nano-hardness and decrease residual stresses.

Effect of deep cryogenic treatment on the properties of AISI M2 steel / Sola, Ramona; Poli, Giorgio; Defanti, Silvio; Veronesi, Paolo; Parigi, Giovanni. - (2015). ((Intervento presentato al convegno European Conference on Heat Treatment 2015 and 22nd Heat Treatment and Surface Engineering from Tradition to Innovation Congress, IFHTSE 2015 tenutosi a Venezia nel 20-22 May 2015.

Effect of deep cryogenic treatment on the properties of AISI M2 steel

SOLA, Ramona;POLI, Giorgio;DEFANTI, Silvio;VERONESI, Paolo;
2015

Abstract

Deep cryogenic treatment is a special kind of bulk hardening heat treatment performed on a big variety of tool and carburized steels, to improve mechanical properties and wear resistance. The mai reason for this is the complete transformation from austenite into martensite plus the formation of submicrometric carbides dispersed in the tempered martensitic structure. The greatest improvement in properties is obtained by carrying out the deep cryogenic treatment between quenching and tempering. However, a significant improvement can be obtained even by treating the tools at the end of the usual heat treatment cycle, i.e. the finished tools. This last solution is more flexible than the other one and can extend the use of the treatment to many practical applications. In order to check the potential of deep cryogenic treatment on the performance of the finished products, an investigation was carried out on the AISI M2 high speed steel quenched, tempered and deep cryogenically treated. The findings shows that the cryogenic treatment promotes the precipitation of submicrometric carbides, that increment wear resistance and nano-hardness and decrease residual stresses.
European Conference on Heat Treatment 2015 and 22nd Heat Treatment and Surface Engineering from Tradition to Innovation Congress, IFHTSE 2015
Venezia
20-22 May 2015
Sola, Ramona; Poli, Giorgio; Defanti, Silvio; Veronesi, Paolo; Parigi, Giovanni
Effect of deep cryogenic treatment on the properties of AISI M2 steel / Sola, Ramona; Poli, Giorgio; Defanti, Silvio; Veronesi, Paolo; Parigi, Giovanni. - (2015). ((Intervento presentato al convegno European Conference on Heat Treatment 2015 and 22nd Heat Treatment and Surface Engineering from Tradition to Innovation Congress, IFHTSE 2015 tenutosi a Venezia nel 20-22 May 2015.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11380/1143487
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