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Mechanical Properties and Forming Behavior of a Type 9%Cr Steel Containing 2%W

AuthorsPeñalba, F.; Gómez, X.; Allende, R.; Carsí, Manuel; Ruano, Oscar Antonio
KeywordsForming Behavior
High Temperature Properties
Mechanical Property
P92 Steel
Issue Date2010
PublisherTrans Tech Publications
CitationMaterials Science Forum 638-642 : 3128-3133 (2010)
AbstractThe possibilities to improve the properties of steels for tubes exposed at high temperatures are explored. The mechanical properties and forming behavior of an experimental casting of type 9Cr-ferritic steels, P92, containing 2%W, are studied. The hardenability was determined by means of continuous cooling diagrams associated with hardness measurements and microstructure observations. Tensile tests from room temperature to 650ºC were carried out to determine the variation of the strength and ductility in this temperature range. In addition, Charpy impact tests were conducted to characterize the toughness of the steel and the ductile-brittle transition temperature. Finally, hot torsion tests at various temperatures and strain rates were carried out and the generalized stresses and strains to rupture for each test are determined. With these data forming stability maps were generated to characterize the best forming conditions.
Publisher version (URL)http://dx.doi.org/10.4028/www.scientific.net/MSF.638-642.3128
Appears in Collections:(CENIM) Artículos
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