TY - GEN
T1 - The effects of microstructures on the ductile fracture surface morphology in duplex stainless steel
AU - Honda, Yuma
AU - Yamada, Naoya
AU - Aramaki, Masatoshi
AU - Oikawa, Makoto
AU - Furukimi, Osamu
PY - 2008
Y1 - 2008
N2 - The effect of austcnitc and fcrritc phases on fraclurc stirfacc morphology were examined for a duplex stainless steel by focusing on the crack propagation properties closely related to the formation of fracture surface. The materials tested have the austenite phase and the ferrite phase in the proportion of seven parts to three. The forged duplex stainless steels were tested instrumented Charpy test to investigate the ductile fracture toughness and the crack propagation energy. The microstmcturcs beneath the fracture surface were investigated to reveal the relationship between microstructures and fracture surface morphology. As a result of observations, it was found that the fracture surface profiles examined on austenite grains showed rough periphery and became fine, whereas the fracture surface on lerritc grains was relatively flat. It is caused that the crystal orientation of the austcnitc phase was random and the cracks on the austcnitc grains spread in various, while the ferrite phase have (001) texture and on the ferrite grains spread only in one direction.
AB - The effect of austcnitc and fcrritc phases on fraclurc stirfacc morphology were examined for a duplex stainless steel by focusing on the crack propagation properties closely related to the formation of fracture surface. The materials tested have the austenite phase and the ferrite phase in the proportion of seven parts to three. The forged duplex stainless steels were tested instrumented Charpy test to investigate the ductile fracture toughness and the crack propagation energy. The microstmcturcs beneath the fracture surface were investigated to reveal the relationship between microstructures and fracture surface morphology. As a result of observations, it was found that the fracture surface profiles examined on austenite grains showed rough periphery and became fine, whereas the fracture surface on lerritc grains was relatively flat. It is caused that the crystal orientation of the austcnitc phase was random and the cracks on the austcnitc grains spread in various, while the ferrite phase have (001) texture and on the ferrite grains spread only in one direction.
UR - http://www.scopus.com/inward/record.url?scp=84928253412&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84928253412&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84928253412
T3 - Proceedings of the 17th IFHTSE Congress
SP - 522
EP - 525
BT - Proceedings of the 17th IFHTSE Congress
PB - The Japan Society for Heat Treatment (JSHT)
T2 - 17th International Federation for Heat Treatment and Surface Engineering Congress 2008, IFHTSE 2008
Y2 - 25 October 2008 through 27 October 2008
ER -