Secondary Hardening of an AISI M3:2 High Speed Steel Sinter 23 Hot Isostatic Pressed

Oscar Olimpio de Araújo Filho; Cezar Henrique Gonzalez; Severino Leopoldino Urtiga Filho; C.A.N. Oliveira; Noelle D’emery Gomes Silva; F. Ambrozio Filho

doi:10.4028/www.scientific.net/MSF.899.361

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HomeMaterials Science ForumMaterials Science Forum Vol. 899Secondary Hardening of an AISI M3:2 High Speed...

Secondary Hardening of an AISI M3:2 High Speed Steel Sinter 23 Hot Isostatic Pressed

Abstract:

The main aim of this work was to study the behavior of the secondary hardening of AISI M3:2 high speed steel named Sinter 23^® produced by powder metallurgy process of hot isostatic pressing (HIP). The M3:2 high speed steel Sinter 23^® was submitted to heat treatment of hardening with austenitizing temperatures of 1140 oC, 1160 oC, 1180 oC and 1200 oC and tempering at 540 oC, 560 oC and finally 580 oC. The effectiveness and response of the heat treatment was determined using hardness tests (Vickers and Rockwell C hardness) and had its property of secondary hardness evaluated. The results showed that the secondary hardening peak of Sinter 23^® high speed steel (tempering temperature at which maximum hardness is attained) is at 540 °C for the lower austenitization temperatures of 1140 °C and 1160 °C, and it is at 560 °C for the higher austenitizing/quenching temperatures of 1180 °C and 1200°C.

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Periodical:

Materials Science Forum (Volume 899)

Pages:

361-365

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.899.361

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Online since:

July 2017

Authors:

Oscar Olimpio de Araújo Filho*, Cezar Henrique Gonzalez, Severino Leopoldino Urtiga Filho, C.A.N. Oliveira, Noelle D’emery Gomes Silva, F. Ambrozio Filho

Keywords:

Hardening, High Speed Steel, Secondary Hardening, Sinter 23 HSS

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