Damage Evaluation of Ferrite and Ferrite-Pearlite Steel during Fatigue Crack Initiation by EBSD

Mamoru Hayakawa; Masayuki Wakita; Eisuke Nakayama

doi:10.4028/www.scientific.net/AMR.891-892.410

Paper Titles

Low Cycle Fatigue and Creep-Fatigue Interaction Behaviour of Reduced Activation Ferritic Martensitic (RAFM) Steels with Varying W and Ta Contents
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Cyclic Deformation of Rare-Earth Containing Magnesium Alloys
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Fatigue Behaviour of AZ91 Magnesium Alloy in as-Cast and Severe Plastic Deformed Conditions
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Fatigue of Austenitic High Interstitial Steels - The Role of N and C
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Damage Evaluation of Ferrite and Ferrite-Pearlite Steel during Fatigue Crack Initiation by EBSD
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Low-Cycle Fatigue Behaviour of a Ni-Based Single-Crystal Superalloy
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Low-Cycle Fatigue Crack Growth in Ti-6242 at Elevated Temperature
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Fatigue Behavior of Ultrafine Grained Medium Carbon Steel with Different Carbide Morphologies Processed by High Pressure Torsion
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Period of Fine Granular Area Formation of Bearing Steel in Very High Cycle Fatigue Regime
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 891-892Damage Evaluation of Ferrite and Ferrite-Pearlite...

Damage Evaluation of Ferrite and Ferrite-Pearlite Steel during Fatigue Crack Initiation by EBSD

Abstract:

Orientation changes during fatigue crack initiation in ferrite and ferritepearlite steel were evaluated by electron backscatter diffraction (EBSD). Ferrite steel with different grain sizes and ferritepearlite steel with different carbon contents were prepared. EBSD measurements and fatigue tests were alternately performed using a small specimen. The tests on both ferrite and ferritepearlite steel suggest that the initial cracks were observed in the ferrite matrix. Thus, crystal rotation induced by fatigue in ferrite matrix is quantitatively evaluated by two misorientation parameters: grain reference orientation deviation, which is the misorientation between measuring points and the average orientation in each grain, and crystal misorientation at the same point before and after fatigue testing.

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Periodical:

Advanced Materials Research (Volumes 891-892)

Pages:

410-415

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.891-892.410

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Online since:

March 2014

Authors:

Mamoru Hayakawa*, Masayuki Wakita, Eisuke Nakayama

Keywords:

Carbon Steel, Crack Initiation, Damage Evaluation, Digital Image Correlation (DIC), Electron Back Scatter Diffraction, Fatigue, Ferrite, FerritePearlite, Grain Reference Orientation Deviation, Misorientation

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* - Corresponding Author

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