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Three-dimensional atom probe characterization of alloy element partitioning in cementite during tempering of alloy steel.

Abstract:

Hardness measurements confirm that the martensitic microstructure of an alloy steel, AISI/SAE 4340, is significantly more resistant to softening, compared to the martensitic microstructure of a high-purity Fe-0.4% C alloy, at tempering temperatures, 300-400 degrees C, just above the temperatures where cementite replaces transition carbides in the martensitic matrix. Three-dimensional atom probe (3DAP) analyses of the 4340 steel show that Si rejection from the cementite is first detected after...

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Publication status:
Published

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Institution:
University of Oxford
Department:
Oxford, MPLS, Materials
Hardwicke, R More by this author
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Volume:
107
Issue:
9
Pages:
808-812
Publication date:
2007-09-05
DOI:
EISSN:
1879-2723
ISSN:
0304-3991
URN:
uuid:c344f6f5-973a-4bb6-bf34-f51a814ffe0e
Source identifiers:
14318
Local pid:
pubs:14318

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