Nitrogen strengthening of a martensitic steel : Relation between microstructure and mechanical behaviour
Four synthetic martensitic steels containing different nitrogen levels were prepared by powder technique and HIP. The base composition of the four alloys corresponds to H13 steel except for the carbon content. The nitrogen contents of the different specimens are, respectively, 0.2, 0.5, 1.0 and 1.5...
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Published in | Acta materialia Vol. 45; no. 7; pp. 2789 - 2799 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Oxford
Elsevier Science
01.07.1997
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Subjects | |
Online Access | Get full text |
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Summary: | Four synthetic martensitic steels containing different nitrogen levels were prepared by powder technique and HIP. The base composition of the four alloys corresponds to H13 steel except for the carbon content. The nitrogen contents of the different specimens are, respectively, 0.2, 0.5, 1.0 and 1.5 wt.%. The flow stresses and Young's moduli of the four alloys were determined between room temperature and 600 deg C. The volume fractions of micron-size and manometric second-phase particles were determined as a function of the total nitrogen content. The mechanical and microstructural analyses show that nitrogen strengthening of martensitic tool steel is suitably described by Orowan's mechanism. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 1359-6454 1873-2453 |
DOI: | 10.1016/S1359-6454(96)00379-5 |