Evaluation of Changes of Mechanical Properties of Selected Cr-Ni-Mo Steels for Heavy Forgings during Long Time Annealing

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F17%3A00312894" target="_blank" >RIV/68407700:21220/17:00312894 - isvavai.cz</a>

Result on the web

<a href="https://www.scientific.net/MSF.891.149" target="_blank" >https://www.scientific.net/MSF.891.149</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/MSF.891.149" target="_blank" >10.4028/www.scientific.net/MSF.891.149</a>

Result language

angličtina

Original language name

Evaluation of Changes of Mechanical Properties of Selected Cr-Ni-Mo Steels for Heavy Forgings during Long Time Annealing

Original language description

The effect of long dwell time at elevated temperatures on two types of steels used for production of heavy forgings was evaluated. Microstructural changes and mechanical properties were monitored in temperature interval of 200 - 700 °C in order to avoid the possibility of grain boundary embrittlement during long dwell time at the processing temperature. Samples of the evaluated steels 26NiCrMoV14-5 and 22CrNiMoWV8-8 were being austenitized for 2 hours at temperature of 1200 °C and oil quenched. Subsequently the annealing at selected temperatures for 100 hours was applied. Tensile test, hardness and impact energy measurements were used for the evaluation. The results of mechanical testing, structural and fracture surface analyses indicate that for steels 26NiCrMoV145 and 22CrMoNiWV8-8 there exist a temperature interval of 300 - 400 °C and 500 600 °C respectively showing the toughness decrease.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20501 - Materials engineering

Project

<a href="/en/project/LO1207" target="_blank" >LO1207: Support of Sustainability of the Innovation Centre of Diagnostics and Applications of Materials at CTU-FME in Prague</a><br>

Continuities

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

Publication year

2017

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

6

Pages from-to

149-154

Publisher name

Trans Tech Publications

Place of publication

Curich

Event location

Stará Lesná, High Tatra Mountains

Event date

Apr 22, 2016

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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