Fatigue behavior of AISI 8620 steel exposed to magnetic field
| Autor: | Soo Yeol Jeong, Seung Chang Yoo, Yeon Suk Choi, Kyoung Joon Choi, Junhyuk Ham, Ji Hyun Kim |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Cementite Mechanical Engineering Metals and Alloys Nucleation 02 engineering and technology Superconducting magnet equipment and supplies 021001 nanoscience & nanotechnology 01 natural sciences Magnetic field chemistry.chemical_compound chemistry Mechanics of Materials Residual stress 0103 physical sciences Ultimate tensile strength Materials Chemistry Composite material Elongation 010306 general physics 0210 nano-technology human activities Elastic modulus |
| Zdroj: | Journal of Alloys and Compounds. 764:73-79 |
| ISSN: | 0925-8388 |
| Popis: | In this study, the effect of magnetic field on AISI 8620 steel, which is commonly used in essential machinery components, was investigated in microstructural and mechanical aspects, and fatigue lifetime was finally evaluated. To prepare the steel exposed to magnetic field, cryo-cooled superconducting magnet system that generates a 10-T magnetic field was used in this study. The samples were exposed to 10-T magnetic field for 0 d, 10 d, and 20 d. The magnetic exposure induced the additional nucleation of cementite and the reduction of the compressive residual stress in the steel. This exposure resulted in extension of the fatigue lifetime by increments in yield strength, tensile strength and elongation, and the reduction of elastic modulus. This could occur because of the changes in mechanical properties induced by the additional precipitation of cementite and the relief of the compressive residual stress under magnetic field. |
| Databáze: | OpenAIRE |
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