Title :
Formation of fragmented structure in Armco-iron under fatigue crack surface
Author :
Smirnov, A.I. ; Tushinsky, L.I. ; Mochalina, N.S. ; Golovin, E.D.
Author_Institution :
Dept. of Mater. Studies, Novosibirsk State Tech. Univ., Novosibirsk
Abstract :
Cyclic cracking of annealed Armco-iron specimens in the three-dot bending scheme has been obtained and TEM investigations of areas under the fatigue fracture surface have been carried out. The formation of different dislocation structures in Armco-iron depending on a distance to the cycle crack surface is studied. The dislocation density dependence on the distance to the fatigue fracture surface is determined. The formation of the fragmented structure in the immediate vicinity of the fatigue crack surface is revealed.
Keywords :
dislocation density; fatigue cracks; iron; surface cracks; transmission electron microscopy; Armco-iron; Fe; TEM investigations; annealed specimens; cyclic cracking; dislocation density; fatigue crack surface; fatigue fracture surface; fragmented structure; three-dot bending; Annealing; Chaos; Fatigue; Lattices; Surface cracks; Surface resistance; Thin wall structures; Transmission electron microscopy;
Conference_Titel :
Strategic Technologies, 2008. IFOST 2008. Third International Forum on
Conference_Location :
Novosibirsk-Tomsk
Print_ISBN :
978-1-4244-2319-4
Electronic_ISBN :
978-1-4244-2320-0
DOI :
10.1109/IFOST.2008.4602901
