Open AccessCrystallographic orientation on raft-like structure developed by tensile deformation in Cu-Fe dual phase alloy sheet
Author(s) -
Norimitsu Koga,
Shohei Tomono,
Osamu Umezawa
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1121/1/012006
Subject(s) - materials science , raft , alloy , ultimate tensile strength , crystal structure , phase (matter) , deformation (meteorology) , crystallography , composite material , chemistry , polymerization , organic chemistry , polymer
The crystallographic orientation of a raft-like structure developed by tensile deformation in Cu-40 mass % Fe dual phase alloy sheet was investigated. The sheet exhibited Cu and Fe layer structure aligned along the rolling direction (RD). The tensile tests were carried out parallel to the RD. The rearrangement of the layer structure was observed in a necked region, where the layers were distorted and aligned along the normal direction (ND). The layered structure perpendicular to the tensile direction is similar to the raft structure developed by creep deformation in a nickel-based super alloy. The bending of layers in the raft-like structure and shear fracture were detected in the cross-section of the samples. The raft-like structure in Cu-Fe dual phase alloy displayed a specific crystal orientation such as Cu //ND, Cu //RD, Fe //ND, and Fe //Rd. The orientations are matched to those rotated 90 degrees around the transverse direction of the layer structure. Therefore, the bending of the layer structure in a necked part and/or local shear deformation may be responsible for the raft-like structure development in Cu-Fe dual phase alloy.