Effects of temperature on fatigue crack growth of a A508-2 in LWR environment

William Cullen; Kari Törrönen; Markku Kemppainen

Effects of temperature on fatigue crack growth of a A508-2 in LWR environment

William Cullen
, Kari Törrönen
, Markku Kemppainen

VTT Technical Research Centre of Finland

Materials Engineering Associates Inc.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Abstract

Fatigue crack growth rates were determined for A 508-2 steel in pressurized high-temperature, reactor-grade water, over a temperature range of 93°C to 288°C (200°F to 550°F). In addition, studies of the oxide layer on the fatigue fracture surface and of the fractography of these specimens were completed in order to provide information on corrosion-assisted, fatigue crack growth mechanisms. The crack growth data show a distinct minimum in growth rate at approx. 200°C (approx. 400°F). Magnetite (Fe₃O₄) was found on the fatigue fracture surfaces at all temperatures. The fractography shows brittle-like features for all test temperatures. These observations suggest that hydrogen evolution may have occurred and that hydrogen-assisted crack growth may be responsible for the environmental effects observed.

Original language	English
Title of host publication	Proceedings of Pressure Vessel and Piping Conference
Place of Publication	New York
Publisher	American Society for Testing and Materials (ASTM)
Pages	231-241
Publication status	Published - 1983
MoE publication type	A4 Article in a conference publication
Event	Pressure Vessel and Piping Conference - Portland, United States Duration: 19 Jun 1983 → 24 Jun 1983

Conference

Conference	Pressure Vessel and Piping Conference
Country/Territory	United States
City	Portland
Period	19/06/83 → 24/06/83

Cite this

@inproceedings{87bf72573c384b53ab28ec933dd80a06,

title = "Effects of temperature on fatigue crack growth of a A508-2 in LWR environment",

abstract = "Fatigue crack growth rates were determined for A 508-2 steel in pressurized high-temperature, reactor-grade water, over a temperature range of 93°C to 288°C (200°F to 550°F). In addition, studies of the oxide layer on the fatigue fracture surface and of the fractography of these specimens were completed in order to provide information on corrosion-assisted, fatigue crack growth mechanisms. The crack growth data show a distinct minimum in growth rate at approx. 200°C (approx. 400°F). Magnetite (Fe3O4) was found on the fatigue fracture surfaces at all temperatures. The fractography shows brittle-like features for all test temperatures. These observations suggest that hydrogen evolution may have occurred and that hydrogen-assisted crack growth may be responsible for the environmental effects observed.",

author = "William Cullen and Kari T{\"o}rr{\"o}nen and Markku Kemppainen",

year = "1983",

language = "English",

pages = "231--241",

booktitle = "Proceedings of Pressure Vessel and Piping Conference",

publisher = "American Society for Testing and Materials (ASTM)",

address = "United States",

note = "Pressure Vessel and Piping Conference ; Conference date: 19-06-1983 Through 24-06-1983",

}

Effects of temperature on fatigue crack growth of a A508-2 in LWR environment. / Cullen, William; Törrönen, Kari; Kemppainen, Markku.
Proceedings of Pressure Vessel and Piping Conference. New York: American Society for Testing and Materials (ASTM), 1983. p. 231-241.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - Effects of temperature on fatigue crack growth of a A508-2 in LWR environment

AU - Cullen, William

AU - Törrönen, Kari

AU - Kemppainen, Markku

PY - 1983

Y1 - 1983

N2 - Fatigue crack growth rates were determined for A 508-2 steel in pressurized high-temperature, reactor-grade water, over a temperature range of 93°C to 288°C (200°F to 550°F). In addition, studies of the oxide layer on the fatigue fracture surface and of the fractography of these specimens were completed in order to provide information on corrosion-assisted, fatigue crack growth mechanisms. The crack growth data show a distinct minimum in growth rate at approx. 200°C (approx. 400°F). Magnetite (Fe3O4) was found on the fatigue fracture surfaces at all temperatures. The fractography shows brittle-like features for all test temperatures. These observations suggest that hydrogen evolution may have occurred and that hydrogen-assisted crack growth may be responsible for the environmental effects observed.

AB - Fatigue crack growth rates were determined for A 508-2 steel in pressurized high-temperature, reactor-grade water, over a temperature range of 93°C to 288°C (200°F to 550°F). In addition, studies of the oxide layer on the fatigue fracture surface and of the fractography of these specimens were completed in order to provide information on corrosion-assisted, fatigue crack growth mechanisms. The crack growth data show a distinct minimum in growth rate at approx. 200°C (approx. 400°F). Magnetite (Fe3O4) was found on the fatigue fracture surfaces at all temperatures. The fractography shows brittle-like features for all test temperatures. These observations suggest that hydrogen evolution may have occurred and that hydrogen-assisted crack growth may be responsible for the environmental effects observed.

M3 - Conference article in proceedings

SP - 231

EP - 241

BT - Proceedings of Pressure Vessel and Piping Conference

PB - American Society for Testing and Materials (ASTM)

CY - New York

T2 - Pressure Vessel and Piping Conference

Y2 - 19 June 1983 through 24 June 1983

ER -

Effects of temperature on fatigue crack growth of a A508-2 in LWR environment

Abstract

Conference

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