Microstructure and creep behaviour of P92 steel after HPT

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F18%3A00489151" target="_blank" >RIV/68081723:_____/18:00489151 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0921509318304088?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0921509318304088?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.msea.2018.03.059" target="_blank" >10.1016/j.msea.2018.03.059</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Microstructure and creep behaviour of P92 steel after HPT

Popis výsledku v původním jazyce

The influence of the application of severe plastic deformation on microstructure changes and creep deformationnbehaviour was investigated in P92 creep-resistant pipe steel. P92 steel in its as-received state, with a microstructurentypical of tempered martensite, was subjected to high-pressure torsion at room temperature. An investigationnof the microstructure using an electron backscatter diffraction technique revealed that severe plasticndeformation led to the subsequent formation of an ultrafine-grained microstructure, containing {110} fibrentexture and randomly misoriented boundaries. The microstructure characteristics and hardness measurementsnexhibited saturated values at an equivalent strain of higher than about 20. The creep behaviour of the ultrafinegrainednspecimen produced in the saturated region exhibited a minimum creep rate that was about two orders ofnmagnitude faster, and a larger creep ductility, in comparison with the as-received state. Creep exposure at 873 Knwith a time to fracture of about 3 h led to a slight grain coarsening and to the formation of Laves phase.

Název v anglickém jazyce

Microstructure and creep behaviour of P92 steel after HPT

Popis výsledku anglicky

The influence of the application of severe plastic deformation on microstructure changes and creep deformationnbehaviour was investigated in P92 creep-resistant pipe steel. P92 steel in its as-received state, with a microstructurentypical of tempered martensite, was subjected to high-pressure torsion at room temperature. An investigationnof the microstructure using an electron backscatter diffraction technique revealed that severe plasticndeformation led to the subsequent formation of an ultrafine-grained microstructure, containing {110} fibrentexture and randomly misoriented boundaries. The microstructure characteristics and hardness measurementsnexhibited saturated values at an equivalent strain of higher than about 20. The creep behaviour of the ultrafinegrainednspecimen produced in the saturated region exhibited a minimum creep rate that was about two orders ofnmagnitude faster, and a larger creep ductility, in comparison with the as-received state. Creep exposure at 873 Knwith a time to fracture of about 3 h led to a slight grain coarsening and to the formation of Laves phase.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GA16-09518S" target="_blank" >GA16-09518S: Mechanismy creepového porušování pokročilé 9%Cr feritické oceli modifikované wolframem</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Materials Science and Engineering A Structural Materials Properties Microstructure and Processing

ISSN

0921-5093

e-ISSN

1873-4936

Svazek periodika

723

Číslo periodika v rámci svazku

APR

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

9

Strana od-do

287-295

Kód UT WoS článku

000430784400032

EID výsledku v databázi Scopus

2-s2.0-85044117223