Microstructure in unbent and as-hot bent segments of thick-walled P92 steel pipe

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60193247%3A_____%2F15%3AUJP1686A" target="_blank" >RIV/60193247:_____/15:UJP1686A - isvavai.cz</a>

Alternative codes found

RIV/68081723:_____/15:00450106

Result on the web

<a href="http://www.scientific.net/KEM.651-653.53" target="_blank" >http://www.scientific.net/KEM.651-653.53</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.651-653.53" target="_blank" >10.4028/www.scientific.net/KEM.651-653.53</a>

Result language

angličtina

Original language name

Microstructure in unbent and as-hot bent segments of thick-walled P92 steel pipe

Original language description

"The microstructure of P92 steel pipe processed by hot bending was evaluated in order to characterize the influence of hot bending on microstructure changes in extrados and intrados of bend. The straight pipes, with an outer diameter of 350 mm and wall thickness of 39 mm (Productos Tubulares, s.a.u., Spain), were normalized at 1050°C/60min/air and tempered at 740°C/140min/air. The thick-walled P92 pipe was then hot bended at 920-960 °C using bending rate 7 mm/min. The bends were normalized at 1050°C/60min/air and tempered at 775°C/140min/air after hot bending. The selected specimens, machined from different locations of pipe, were additionally underwent thermal ageing at 650 °C to simulate microstructure degradation typical for long-term service conditions. Microstructure was investigated by scanning electron microscope Tescan Lyra 3 equipped with NordlysNano EBSD detector operating at an accelerating voltage of 20 kV with specimen tilted at 70° and by transmission el. microscope JEM-2100F. Microstructure investigation revealed that different processing history influenced distribution and size of secondary phases and caused changes in interboundary spacing both in the straight pipe and bends. It was found that microstructure changes induced during hot bending and subsequent postbending heat treatment caused deterioration in creep properties of bends in comparison with those of straight pipe."

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

JG - Metallurgy, metal materials

OECD FORD branch

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Project

<a href="/en/project/TA02010260" target="_blank" >TA02010260: Research of materials changes occurring in modern advanced steels used for construction and reconstruction of pipelines in power and chemical industry</a><br>

Continuities

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

Publication year

2015

Confidentiality

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

Article name in the collection

Material Forming ESAFORM 2015

ISBN

978-3-03835-471-0

ISSN

1013-9826

e-ISSN

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Number of pages

6

Pages from-to

53-58

Publisher name

Trans Tech Publications Ltd

Place of publication

Switzerland

Event location

Graz, Austria

Event date

Apr 15, 2015

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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