Microstructure Characterization of Large Strain Deformed Fe-32%Ni Alloy

Bai Xiong Liu; Bao Jun Han

doi:10.4028/www.scientific.net/AMR.146-147.248

Paper Titles

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Tribological Performances and Friction Reduction Mechanism of N-Al₂O₃/FeS Solid Lubrication Duplex Layer
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Microstructure Characterization of Large Strain Deformed Fe-32%Ni Alloy
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Prediction of Fretting Fatigue Life of Aluminum Alloy LY12CZ
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The Fuzzy Judgment for the Wearing Life Distrituion of the Rolling Bearing
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Effect of Thermohydrogen Treatment Temperature on Machinability of Ti6Al4V Alloy
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Effects of Sm on Microstructure and Mechanical Properties of Mg-5.5Al -0.5Y Alloy
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Microstructure Characterization of Large Strain Deformed Fe-32%Ni Alloy

Abstract:

High-resolution electron backscatter diffraction (EBSD) in scanning electron microscope and transmission electron microscope (TEM) were used to investigate the microstructure of Fe-32%Ni alloy processed by large strain multi-axial forging. The samples were compressed with loading direction changed through 90º from pass to pass at temperature of 500°C and a strain rate of 10-2/s. The results show the microstructure evolution is characterized by full development of almost equi-axed fine grains, not well-developed grain boundaries accompanied by high dislocation density and the existence of extensive extinction contours in the vicinity of grain boundaries, and the structure characteristics indicate that the grain boundaries are in a non-equilibrium state with high internal stresses.