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Effects of Ca and B on the Strip Deformation of Cold Rolled Duplex Stainless Steel Type 2205 during Continuous Annealing
Author(s) -
Lee Soo Chan,
Kim Young Hwan,
Lee Yong Deuk
Publication year - 2004
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.200405946
Subject(s) - materials science , metallurgy , hot rolled , annealing (glass) , creep , superplasticity , grain boundary , duplex (building) , grain size , composite material , microstructure , dna , biology , genetics
The effects of Ca and B on the strip deformation of duplex stainless steel Type 2205 under continuous annealing conditions were investigated. For the creep test, the stresses were calculated from the line tension applied to hot rolled and cold rolled Type 2205 strip during continuous annealing. It was found that the cold rolled Type 2205 steel showed more prominent superplasticity as compared with the hot rolled steel, which could be attributed to the fine grain size of the cold rolled steel. The creep rate of cold rolled Type 2205 steel decreased with the Ca and B additions due to the grain boundary segregation of B. It is suggested that the rate controlling mechanism for the strip deformation of cold rolled Type 2205 steel seems to be grain boundary diffusion in γ phase.