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Titolo:
Stress corrosion cracking of A588 steel weldments in flue gas related environments
Autore:
Tsay, LW; Chen, WY; Shiue, RK; Shiue, RH;
Indirizzi:
Natl Taiwan Ocean Univ, Inst Mat Engn, Keelung 202, Taiwan Natl Taiwan Ocean Univ Keelung Taiwan 202 Mat Engn, Keelung 202, Taiwan Natl Dong Hwa Univ, Inst Mat Sci & Engn, Hualien 974, Taiwan Natl Dong HwaUniv Hualien Taiwan 974 at Sci & Engn, Hualien 974, Taiwan Taiwan Power Co, Boiler Div, Taichung 434, Taiwan Taiwan Power Co Taichung Taiwan 434 Co, Boiler Div, Taichung 434, Taiwan
Titolo Testata:
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
fascicolo: 3, volume: 10, anno: 2001,
pagine: 371 - 377
SICI:
1059-9495(200106)10:3<371:SCCOAS>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
SLOW STRAIN-RATE; LOW-ALLOY STEELS; STAINLESS-STEEL; ATMOSPHERIC CORROSION; HIGH-STRENGTH; RESISTANCE; HYDROGEN;
Keywords:
hydrogen embrittlement; overlay welding; repair welding; slow strain rate tensile test; stress corrosion cracking; U-bend test;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
22
Recensione:
Indirizzi per estratti:
Indirizzo: Tsay, LW Natl Taiwan Ocean Univ, Inst Mat Engn, Keelung 202, Taiwan Natl Taiwan Ocean Univ Keelung Taiwan 202 , Keelung 202, Taiwan
Citazione:
L.W. Tsay et al., "Stress corrosion cracking of A588 steel weldments in flue gas related environments", J MAT ENG P, 10(3), 2001, pp. 371-377

Abstract

This study investigated stress corrosion cracking (SCC) of A588 steel welds as determined by U-bend immersion tests and slow strain rate tensile (SSRT) tests to evaluate the steel's cracking susceptibility in various regionsof the weldments, The immersion test results indicated that the fusion zone (FZ) had better corrosion resistance than the other regions in the weld. It was also demonstrated that the columnar grain boundaries exhibited a higher resistance to corrosion than the grain interior of the FZ, However, thecoarse elongated ferrite in the FZ is susceptible to hydrogen embrittlement (HE), which results in the formation of microcracks. As a result, a severe degradation of the weld's tensile properties in the saturated H2S solution was observed. Scanning electron microscope (SEM) fractographs of tensile specimens reveal a cleavage fracture in the coarse-grained heat-affected zone (CGHAZ) and featherlike rupture in the FZ, both indicating a high sensitivity to HE.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/03/20 alle ore 18:15:39