TY - JOUR
T1 - Dislocation structure in precipitation-hardened Ir-based binary alloys
AU - Yamabe-Mitarai, Y.
AU - Ro, Y.
AU - Nakazawa, S.
AU - Maruko, T.
AU - Harada, H.
PY - 2001/1/1
Y1 - 2001/1/1
N2 - This paper examines the microstructure and the strength behavior up to 1800 °C of Ir-V, -Ti, -Nb, -Ta, -Hf, and -Zr alloys which formed fcc and L12 two-phase coherent structures. It is indicated that the precipitation-hardening effect depends on microstructure, resulting from differences in the lattice misfit. A maze structure such as in the Ir-Zr alloy was more effective for precipitation hardening than an orderly arrayed structure such as in the Ir-Nb alloy. The dislocation structure of deformed samples was investigated by TEM. The deformation mechanism of the alloys with different microstructures was discussed.
AB - This paper examines the microstructure and the strength behavior up to 1800 °C of Ir-V, -Ti, -Nb, -Ta, -Hf, and -Zr alloys which formed fcc and L12 two-phase coherent structures. It is indicated that the precipitation-hardening effect depends on microstructure, resulting from differences in the lattice misfit. A maze structure such as in the Ir-Zr alloy was more effective for precipitation hardening than an orderly arrayed structure such as in the Ir-Nb alloy. The dislocation structure of deformed samples was investigated by TEM. The deformation mechanism of the alloys with different microstructures was discussed.
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U2 - 10.4028/www.scientific.net/ddf.188-190.171
DO - 10.4028/www.scientific.net/ddf.188-190.171
M3 - Article
AN - SCOPUS:0035121097
VL - 188-190
SP - 171
EP - 184
JO - Defect and Diffusion Forum
JF - Defect and Diffusion Forum
SN - 1012-0386
ER -