Processing map of 9% Chromium Steel P91

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F16%3A86099515" target="_blank" >RIV/61989100:27360/16:86099515 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Processing map of 9% Chromium Steel P91

Original language description

The article is aimed at determination of energy dissipation during rolling. The theoretical principles are given, together with description of plastometric tests, dynamic material model, map theory and procedure for their creation. The subject of research are samples of 9Cr steel for which plastometric pressure tests on a Gleeble plastometer have been conducted. The tests were performed at different deformations (0.2; 0.5; 0.7) at strain rates (0.1; 1; 10) and temperatures of 800-1260oC. Energy dissipation is characterized by a dimensionless quantity, known as the efficiency of energy dissipation η, which is the main element of the dynamic material model - DMM. The DMM determines the regions of instability and is mainly focused on the localization of the dynamic recrystallization. Here the raw data from the plastometer are processed and the procedures and calculations leading to the compilation of dissipation and process map are described. Also the steps from the approximated data for a wider range of temperature and strain rate are mentioned. The measured values were used for calculations leading to the determination of the sensitivity parameter of the plastic deformation m, the resulting efficiency of dissipation , but also to determination of the parameter of plastic instability . From these figures the 2D or 3D dissipation maps and resulting process maps were compiled. The resulting maps were created in the Golden Surfer software. Because of the monotony of the results obtained, both raw and extrapolated, our final dissipation figures do not show any specific domains that would indicate impaired dissipation over the range of used temperatures and strain rate.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JG - Metallurgy, metal materials

OECD FORD branch

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Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Obrobka Plastyczna Metali

ISSN

0867-2628

e-ISSN

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Volume of the periodical

27

Issue of the periodical within the volume

3

Country of publishing house

PL - POLAND

Number of pages

16

Pages from-to

179-194

UT code for WoS article

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EID of the result in the Scopus database

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