The Change of the Structure and Mechanical Properties of the Austenitic Steels after Exposure at the Critical Temperature

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26823357%3A_____%2F16%3AN0000010" target="_blank" >RIV/26823357:_____/16:N0000010 - isvavai.cz</a>

Result on the web

<a href="http://www.ttp.net/978-3-0357-1018-2/5.html" target="_blank" >http://www.ttp.net/978-3-0357-1018-2/5.html</a>

DOI - Digital Object Identifier

—

Result language

angličtina

Original language name

The Change of the Structure and Mechanical Properties of the Austenitic Steels after Exposure at the Critical Temperature

Original language description

The paper deals with the change of the structure and mechanical properties of the austenitic steels used in supercritical power industry after the exposure at the working temperature. The effect of plastic deformation applied during the bending of tubes on the mechanical properties and the structure was also studied. The positive effect of solution annealing on the structure was studied, too. The grades TP347 HFG, Super 304H and HR3C representing most widely used grades were chosen in this study. The bend radii R60, R80 and R100 were on the matter. The mechanical properties were studied using small punch tests and miniaturized tensile tests due to small wall thickness of the tubes. From the results obtained it can be concluded that the mechanical properties and the microstructure have been influenced due to even one year of exposure at the working temperature significantly. Various amount of σ-phase was found, especially on the pulled part of the bend (extrados), even when the tubes were exposed only to thermal exposure without any loading.

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

JA - Electronics and optoelectronics

OECD FORD branch

—

Project

<a href="/en/project/TA01010181" target="_blank" >TA01010181: Bending of tubes for overheaters and reheaters exchanging surfaces in new boilers.</a><br>

Continuities

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

Publication year

2016

Confidentiality

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

Article name in the collection

Metallography XVI

ISBN

978-3-0357-1018-2

ISSN

0255-5476

e-ISSN

—

Number of pages

5

Pages from-to

330-334

Publisher name

Trans Tech Publicationx

Place of publication

—

Event location

Stará Lesná, Slovak Republic

Event date

Apr 20, 2016

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

—