Evaluation of tempered martensite embrittlement in AISI 15B41 steel

Tempered martensite embrittlement (TME) is characterised by a drop in the impact toughness after tempering in a range of temperatures from 250-450 deg C for short times (1 or 2 h) in martensitic steels. An analysis of experimental data obtained from Charpy tests and from fractography reveals that th...

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Bibliographic Details
Published in:Journal of materials science letters 1995-09, Vol.14 (17), p.1241-1242
Main Authors: Lescano, D, Mancini, R, Lanzillotto, C
Format: Article
Language:English
Online Access:Get full text
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Summary:Tempered martensite embrittlement (TME) is characterised by a drop in the impact toughness after tempering in a range of temperatures from 250-450 deg C for short times (1 or 2 h) in martensitic steels. An analysis of experimental data obtained from Charpy tests and from fractography reveals that the addition of boron is not a remedy for TME in 15B41 steel. It shows a standard TME behaviour, with an initial decrease of toughness (200-300 deg C) where the dominant brittle fracture mechanism is transgranular, not intergranular.
ISSN:0261-8028