Effect of holding time at stabilization annealing on properties of 08CH18N10T austenitic stainless steel

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23210%2F20%3A43961609" target="_blank" >RIV/49777513:23210/20:43961609 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.confer.cz/metal/2020" target="_blank" >https://www.confer.cz/metal/2020</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.37904/metal.2020.3498" target="_blank" >10.37904/metal.2020.3498</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of holding time at stabilization annealing on properties of 08CH18N10T austenitic stainless steel

Popis výsledku v původním jazyce

Titanium-stabilized austenitic stainless steel 08Ch18N10T is often used in nuclear power due to its properties. The parts of the primary circuit of the nuclear reactor are manufactured from this steel, so the material must achieve both very good corrosion resistance and thermal stability of the structure - yield strength of at least 177 MPa at 350 °C is prescribed. The treatment of this steel involves several important stages that affect the resulting mechanical properties. In particular, the solution and stabilization annealing stages after forging or rolling are very time and energy-intensive, and therefore various ways to reduce these times are sought. The combination of solution annealing at 1020 °C with a holding time of 15 and 30 minutes and stabilization annealing at 720 °C with a holding time of 2.5 hours to 15 hours was tested on samples from the 08Ch18N10T steel. The holding times at temperatures were adapted to the size of the used semi-products. The aim was to find out not only the effect of holding time during stabilization annealing on mechanical properties but also the effect of different solution annealing time. The results showed that prolonging the holding time during solution annealing has a significant impact on reducing the variance in mechanical properties. In all combinations, yield strength at 350 °C higher than 200 MPa and tensile strength over 380 MPa were obtained.

Název v anglickém jazyce

Effect of holding time at stabilization annealing on properties of 08CH18N10T austenitic stainless steel

Popis výsledku anglicky

Titanium-stabilized austenitic stainless steel 08Ch18N10T is often used in nuclear power due to its properties. The parts of the primary circuit of the nuclear reactor are manufactured from this steel, so the material must achieve both very good corrosion resistance and thermal stability of the structure - yield strength of at least 177 MPa at 350 °C is prescribed. The treatment of this steel involves several important stages that affect the resulting mechanical properties. In particular, the solution and stabilization annealing stages after forging or rolling are very time and energy-intensive, and therefore various ways to reduce these times are sought. The combination of solution annealing at 1020 °C with a holding time of 15 and 30 minutes and stabilization annealing at 720 °C with a holding time of 2.5 hours to 15 hours was tested on samples from the 08Ch18N10T steel. The holding times at temperatures were adapted to the size of the used semi-products. The aim was to find out not only the effect of holding time during stabilization annealing on mechanical properties but also the effect of different solution annealing time. The results showed that prolonging the holding time during solution annealing has a significant impact on reducing the variance in mechanical properties. In all combinations, yield strength at 350 °C higher than 200 MPa and tensile strength over 380 MPa were obtained.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/TJ02000274" target="_blank" >TJ02000274: Stanovení principů a dějů probíhajících při stabilizačním žíhání v korozivzdorné austenitické oceli používané v jaderné energetice</a><br>

Návaznosti

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

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název statě ve sborníku

METAL 2020-29th International Conference on Metallurgy and Materials, Conference Proceedings

ISBN

978-80-87294-97-0

ISSN

2694-9296

e-ISSN

—

Počet stran výsledku

6

Strana od-do

428-433

Název nakladatele

Tanger Ltd.

Místo vydání

Ostrava

Místo konání akce

Brno, Česko

Datum konání akce

20. 5. 2020

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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