TY - GEN
T1 - Effect of crystal orientation on the stress corrosion cracking of directionally solidified L-grade stainless steels
AU - Katayama, Yoshinori
AU - Tsubota, Motoji
AU - Saito, Yoshiaki
PY - 2007/12/1
Y1 - 2007/12/1
N2 - In order to clarify the SCC initiation and propagation path of L-grade stainless steel, directionally solidification material was prepared and SCC test has been carried out. Creviced bent beam (CBB) test was performed in the high temperature water. Crack initiated in the cold worked surface, which was made for accelerating the crack initiation in L-grade stainless steel, and propagated along the austenite (γ) / ferrite (δ) boundary. The γ/δ boundary had a large misorientation compared with the γ/γ boundary. It was thought that there was a close relationship between a crack path and misorientation of the neighboring crystals. After the simulated welding heat treatment (700°C/10hr), the σ phase was created in the part of σ phase, and it was considered that this phenomenon may affect the SCC susceptibility.
AB - In order to clarify the SCC initiation and propagation path of L-grade stainless steel, directionally solidification material was prepared and SCC test has been carried out. Creviced bent beam (CBB) test was performed in the high temperature water. Crack initiated in the cold worked surface, which was made for accelerating the crack initiation in L-grade stainless steel, and propagated along the austenite (γ) / ferrite (δ) boundary. The γ/δ boundary had a large misorientation compared with the γ/γ boundary. It was thought that there was a close relationship between a crack path and misorientation of the neighboring crystals. After the simulated welding heat treatment (700°C/10hr), the σ phase was created in the part of σ phase, and it was considered that this phenomenon may affect the SCC susceptibility.
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M3 - Conference contribution
AN - SCOPUS:51849104608
SN - 9781605600598
SN - 9781605600598
T3 - Canadian Nuclear Society - 13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007
SP - 930
EP - 936
BT - Canadian Nuclear Society - 13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007
T2 - 13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007
Y2 - 19 April 2007 through 23 April 2007
ER -