Microstructure and Nano-Indentation Properties of Ion-Irradiated Fe-9wt%Cr Alloy

Hyung Ha Jin; Chan Sun Shin; Wheung Whoe Kim

doi:10.4028/www.scientific.net/SSP.135.119

Paper Titles

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Formation of Nano M₂X Particles by a Tempering in High Cr Ferritic/Martensitic Steel
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Effect of Vanadium on Development of Acicular Ferrite Microstructure in Low Carbon Steel
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Nucleation of Intragranular Ferrite on B1-Type Non-Metallic Inclusions
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Microstructure and Nano-Indentation Properties of Ion-Irradiated Fe-9wt%Cr Alloy
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Synthesis and Characterization of NiFe₂O₄ Nanoparticles Synthesized by Levitational Gas Condensation (LGC)
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Corrosion Behavior of Ceramic Dispersion Strengthened High-Cr Stainless Steel
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Brazing of Ti Using a Zr-Based Amorphous Filler
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The Effect of Ag Diffusion Barrier on the Microstructure of a Titanium Dissimilar Joining
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Microstructure and Nano-Indentation Properties of Ion-Irradiated Fe-9wt%Cr Alloy

Abstract:

A change of the mechanical property and microstructure of an Fe ion irradiated polycrystalline Fe-9wt%Cr model alloy to 1 dpa was examined using a nano-indentation and transmission electron microscopy. We anticipated that irradiated damage would be formed up to about 2.5μm and a displacement damage peak would be located at around 1.7μm from a surface through a TRIM code calculation. A thick dark band was formed at about 1.5μm from a surface with an actual TEM observation, which is consistent with a displacement damage peak in the TRIM code calculation. TEM observations showed that small defects with a Burgers vector a0<100> and 1/2a0<110> are formed in irradiated Fe-9wt%Cr alloy. In the nano indentation test, the hardness increase due to irradiation induced defects was up to 0.6GPa which can be converted to a yield stress increase of 200MPa.