The heat treatment response and the microstructure of a high-chromium steel alloyed with nitrogen was investigated. Deep Cryogenic Treatment after quenching and prior to tempering was confirmed to be crucial in order to maximise the hardness of the steel. The different contributions to hardness of the various constituents (martensite, retained austenite, carbides and carbonitrides) were quantified by an equation based on the composite model. Although simple, the model was able to describe the experimentally observed variation in hardness as a function of the austenizing temperature, and could also be used to estimate the volume fraction of the different constituents for a given austenizing temperature.

Analysis of the effect of Deep Cryogenic Treatment on the hardness and microstructure of X30 CrMoN 15 1 steel / EL MEHTEDI, Mohamad; Ricci;, Paola; Drudi;, L.; El Mohtadi;, S.; Cabibbo;, Marcello; Spigarelli;, Stefano. - In: MATERIALS & DESIGN. - ISSN 0264-1275. - STAMPA. - 33:(2012), pp. 136-144. [10.1016/j.matdes.2011.07.030]

Analysis of the effect of Deep Cryogenic Treatment on the hardness and microstructure of X30 CrMoN 15 1 steel

EL MEHTEDI; Mohamad;Ricci; Paola;Cabibbo; Marcello;Spigarelli; Stefano
2012-01-01

Abstract

The heat treatment response and the microstructure of a high-chromium steel alloyed with nitrogen was investigated. Deep Cryogenic Treatment after quenching and prior to tempering was confirmed to be crucial in order to maximise the hardness of the steel. The different contributions to hardness of the various constituents (martensite, retained austenite, carbides and carbonitrides) were quantified by an equation based on the composite model. Although simple, the model was able to describe the experimentally observed variation in hardness as a function of the austenizing temperature, and could also be used to estimate the volume fraction of the different constituents for a given austenizing temperature.
2012
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11566/75092
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 64
  • ???jsp.display-item.citation.isi??? 47
social impact