Hydrogen-induced delayed cracking in TRIP-aided lean-alloyed ferritic-austenitic stainless steels

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Hydrogen-induced delayed cracking in TRIP-aided lean-alloyed ferritic-austenitic stainless steels. / Papula, Suvi; Sarikka, Teemu; Anttila, Severi; Talonen, Juho; Virkkunen, Iikka; Hänninen, Hannu.

julkaisussa: Materials, Vuosikerta 10, Nro 6, 613, 03.06.2017.

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

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Papula, Suvi ; Sarikka, Teemu ; Anttila, Severi ; Talonen, Juho ; Virkkunen, Iikka ; Hänninen, Hannu. / Hydrogen-induced delayed cracking in TRIP-aided lean-alloyed ferritic-austenitic stainless steels. Julkaisussa: Materials. 2017 ; Vuosikerta 10, Nro 6.

Bibtex - Lataa

@article{d1cd3e58c6cd4422b4c5503f0b480279,
title = "Hydrogen-induced delayed cracking in TRIP-aided lean-alloyed ferritic-austenitic stainless steels",
abstract = "Susceptibility of three lean-alloyed ferritic-austenitic stainless steels to hydrogen-induced delayed cracking was examined, concentrating on internal hydrogen contained in the materials after production operations. The aim was to study the role of strain-induced austenite to martensite transformation in the delayed cracking susceptibility. According to the conducted deep drawing tests and constant load tensile testing, the studied materials seem not to be particularly susceptible to delayed cracking. Delayed cracks were only occasionally initiated in two of the materials at high local stress levels. However, if a delayed crack initiated in a highly stressed location, strain-induced martensite transformation decreased the crack arrest tendency of the austenite phase in a duplex microstructure. According to electron microscopy examination and electron backscattering diffraction analysis, the fracture mode was predominantly cleavage, and cracks propagated along the body-centered cubic (BCC) phases ferrite and α'-martensite. The BCC crystal structure enables fast diffusion of hydrogen to the crack tip area. No delayed cracking was observed in the stainless steel that had high austenite stability. Thus, it can be concluded that the presence of α'-martensite increases the hydrogen-induced cracking susceptibility.",
keywords = "Constant load tensile testing, Deep drawing, Delayed cracking, Ferritic-austenitic stainless steel, Hydrogen, Martensite transformation",
author = "Suvi Papula and Teemu Sarikka and Severi Anttila and Juho Talonen and Iikka Virkkunen and Hannu H{\"a}nninen",
year = "2017",
month = "6",
day = "3",
doi = "10.3390/ma10060613",
language = "English",
volume = "10",
journal = "Materials",
issn = "1996-1944",
publisher = "MDPI AG",
number = "6",

}

RIS - Lataa

TY - JOUR

T1 - Hydrogen-induced delayed cracking in TRIP-aided lean-alloyed ferritic-austenitic stainless steels

AU - Papula, Suvi

AU - Sarikka, Teemu

AU - Anttila, Severi

AU - Talonen, Juho

AU - Virkkunen, Iikka

AU - Hänninen, Hannu

PY - 2017/6/3

Y1 - 2017/6/3

N2 - Susceptibility of three lean-alloyed ferritic-austenitic stainless steels to hydrogen-induced delayed cracking was examined, concentrating on internal hydrogen contained in the materials after production operations. The aim was to study the role of strain-induced austenite to martensite transformation in the delayed cracking susceptibility. According to the conducted deep drawing tests and constant load tensile testing, the studied materials seem not to be particularly susceptible to delayed cracking. Delayed cracks were only occasionally initiated in two of the materials at high local stress levels. However, if a delayed crack initiated in a highly stressed location, strain-induced martensite transformation decreased the crack arrest tendency of the austenite phase in a duplex microstructure. According to electron microscopy examination and electron backscattering diffraction analysis, the fracture mode was predominantly cleavage, and cracks propagated along the body-centered cubic (BCC) phases ferrite and α'-martensite. The BCC crystal structure enables fast diffusion of hydrogen to the crack tip area. No delayed cracking was observed in the stainless steel that had high austenite stability. Thus, it can be concluded that the presence of α'-martensite increases the hydrogen-induced cracking susceptibility.

AB - Susceptibility of three lean-alloyed ferritic-austenitic stainless steels to hydrogen-induced delayed cracking was examined, concentrating on internal hydrogen contained in the materials after production operations. The aim was to study the role of strain-induced austenite to martensite transformation in the delayed cracking susceptibility. According to the conducted deep drawing tests and constant load tensile testing, the studied materials seem not to be particularly susceptible to delayed cracking. Delayed cracks were only occasionally initiated in two of the materials at high local stress levels. However, if a delayed crack initiated in a highly stressed location, strain-induced martensite transformation decreased the crack arrest tendency of the austenite phase in a duplex microstructure. According to electron microscopy examination and electron backscattering diffraction analysis, the fracture mode was predominantly cleavage, and cracks propagated along the body-centered cubic (BCC) phases ferrite and α'-martensite. The BCC crystal structure enables fast diffusion of hydrogen to the crack tip area. No delayed cracking was observed in the stainless steel that had high austenite stability. Thus, it can be concluded that the presence of α'-martensite increases the hydrogen-induced cracking susceptibility.

KW - Constant load tensile testing

KW - Deep drawing

KW - Delayed cracking

KW - Ferritic-austenitic stainless steel

KW - Hydrogen

KW - Martensite transformation

UR - http://www.scopus.com/inward/record.url?scp=85020479840&partnerID=8YFLogxK

U2 - 10.3390/ma10060613

DO - 10.3390/ma10060613

M3 - Article

VL - 10

JO - Materials

JF - Materials

SN - 1996-1944

IS - 6

M1 - 613

ER -

ID: 14071905