The microstructure and the resistance to deformation by static load at 580°C were investigated for tubes of steels 20CrMoV121 and 10CrMo910 from a high pressure steam boiler after several 10000 hr of operation. The deformation resistance is much lower on flame than on chimney side of the same exploited tube. The cause is the higher operation temperature on flame side, which modifies the micromorphology of the distribution of carbide precipitates in martensite grains. It is not possible to evaluate reliably the modification of initial steel properties solely on the base of microstructural examination and hardness measurements. The must reliable results are obtained by mechanical testing by slow straining under constant load at boiler operations temperature.

Rights

URN

URN:NBN:SI:DOC-0MFRUUX7

COBISS ID

18996997

Added

22.07.2011

Metadata

Citation

APA:

Vodopivec, Franc, Ule, Boris, Žvokelj, Janez (1997). O deformacijski odpornosti jekel po uporabi v visokotlačnem parnem kotlu, volume 31, issue 5. URN:NBN:SI:DOC-0MFRUUX7 from http://www.dlib.si

MLA:

Vodopivec, Franc, Ule, Boris, Žvokelj, Janez. O deformacijski odpornosti jekel po uporabi v visokotlačnem parnem kotlu. Inštitut za kovinske materiale in tehnologije
Železarna Jesenice
Železarna Ravne
Železarna Štore, 1997.
<http://www.dlib.si/?URN=URN:NBN:SI:DOC-0MFRUUX7>

Kovine zlitine tehnologije
1992-1999
(Assembly record)

prejšnja

Dimenzioniranje posebnih vrst betona z določeno prostorninsko maso
1997
(Previous issue)

O deformacijski odpornosti jekel po uporabi v visokotlačnem parnem kotluOn steel deformation resistance after use in a high temperature boiler

O deformacijski odpornosti jekel po uporabi v visokotlačnem parnem kotlu
On steel deformation resistance after use in a high temperature boiler