Title: Microstructural Evolution in Long Duration Creep Specimens of a Mn-Cr Austenitic Steel
Authors: RUEDL ErichMATERA Roberto
Citation: Journal of Nuclear Materials vol. 151 p. 238-244
Publication Year: 1988
JRC N°: JRC5262
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC5262
Type: Articles in periodicals and books
Abstract: 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
JRC Directorate:Joint Research Centre Historical Collection

Files in This Item:
There are no files associated with this item.


Items in repository are protected by copyright, with all rights reserved, unless otherwise indicated.