Effect of Initial Grain Orientation on Evolution of Deformed Microstructure in Hot Compressed Ni-30Fe Alloy

Jae-Young Cho; Tadanobu Inoue; Fuxing Yin; Kotobu Nagai

doi:10.2320/matertrans.45.2960

Jae-Young Cho, Tadanobu Inoue, Fuxing Yin, Kotobu Nagai

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Keywords: nickel-30 ferrous alloy, shear band, hot deformation, electron back-scattering diffraction pattern, Goss orientation

JOURNAL FREE ACCESS

2004 Volume 45 Issue 10 Pages 2960-2965

DOI https://doi.org/10.2320/matertrans.45.2960

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Abstract

An experimental procedure has been developed to investigate systematically the effect of initial grain orientation on the evolution of deformed microstructure in Ni-30Fe alloy. The investigation of identical grains before and after hot deformation made it possible to trace the evolution of microstructure deformed up to 50% at a strain rate of 1/s in a single pass at 1023 K using a hot compression simulator. The localized inhomogeneous shear bands occurred in almost all grains. On the other hand, the near {110} ‹001› grains have undergone fairly homogeneous deformation even after a high equivalent plastic strain of 1.9.

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