TY - JOUR
T1 - Effect of E21-Fe3AlC precipitation on mechanical properties of γ -austenite stabilized by addition of Mn and Co
AU - Miura, Seiji
AU - Ishii, Hiroaki
AU - Mohri, Tetsuo
N1 - Funding Information:
This research is partially supported by Kawasaki Steel 21st Century Foundation.
PY - 2001
Y1 - 2001
N2 - Effects of Co addition on the phase relation and mechanical properties of an E21-Fe3AlC phase in the Fe-Mn-Al-C system are investigated. The relation between the γ-austenite and E21 phases is the same with Co-free alloys. Two kinds of precipitation processes of E21 phase from γ-austenite matrix are observed: a fine E21 phase precipitation and a cellular structure formation from grain boundaries. The cellular structure formation is explained in relation to the lattice mismatch evaluated by XRD. The lattice mismatch is estimated to be ∼3%, rather higher than that of γ/γ' in Ni-based superalloys, and the volume fraction of the E21-Fe3AlC phase precipitated in the γ-austenite phase is as large as 30%. The micro-vickers hardness increases with increasing Al or C, caused by the increase in the volume fraction of the E21-Fe3AlC phase.
AB - Effects of Co addition on the phase relation and mechanical properties of an E21-Fe3AlC phase in the Fe-Mn-Al-C system are investigated. The relation between the γ-austenite and E21 phases is the same with Co-free alloys. Two kinds of precipitation processes of E21 phase from γ-austenite matrix are observed: a fine E21 phase precipitation and a cellular structure formation from grain boundaries. The cellular structure formation is explained in relation to the lattice mismatch evaluated by XRD. The lattice mismatch is estimated to be ∼3%, rather higher than that of γ/γ' in Ni-based superalloys, and the volume fraction of the E21-Fe3AlC phase precipitated in the γ-austenite phase is as large as 30%. The micro-vickers hardness increases with increasing Al or C, caused by the increase in the volume fraction of the E21-Fe3AlC phase.
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M3 - Conference article
AN - SCOPUS:0035557546
VL - 646
SP - N5201-N5206
JO - Materials Research Society Symposium - Proceedings
JF - Materials Research Society Symposium - Proceedings
SN - 0272-9172
T2 - High Temperature Ordered Intermetallic Alloys IX
Y2 - 27 November 2000 through 29 November 2000
ER -