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Microstructural degradation in compound tubes

Year of publication

1996

Authors

Salonen, Jorma; Auerkari, Pertti

Abstract

In order to quantify microstructural degradation at high temperatures, samples of SA 210 / AISI 304 L compound tube material were annealed in the temperature range 540 - 720°C for 1 to 1 000 hours. The hardness of the annealed material was measured and the microstructure of the samples was investigated with optical and scanning electron microscopy. Microstructural degradation was characterised by the carbide structure in the ferritic-pearlitic base material and by the depth of decarburised and carburised zones of the compound tube interface. The observed changes were quantified in terms of their time and temperature dependence and diffusion coefficients of the process. The results can be used in estimating the extent of thermal exposure of high-temperature components after long-term service or after incidences of overheating.
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Organizations and authors

Publication type

Publication format

Monograph

Audience

Scientific

Peer-reviewed

Peer-Reviewed

MINEDU's publication type classification code

C1 Scientific book

Publication channel information

Journal

VTT Publications

Publisher

VTT Technical Research Centre of Finland

Issue

279

Open access

Open access in the publisher’s service

Yes

License of the publisher’s version

Other license

Self-archived

No

Other information

Keywords

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Language

English

International co-publication

No

Co-publication with a company

No

The publication is included in the Ministry of Education and Culture’s Publication data collection

No