Correlation between Vickers Hardness and Electromagnetic Properties of Automotive Die-Quenched Steel under Various Die Temperatures
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- Numakura Kyohei
- Faculty of Science and Engineering, Iwate University
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- Ohtaka Kazumasa
- Faculty of Science and Engineering, Iwate University
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- Murakami Takeshi
- Faculty of Science and Engineering, Iwate University
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- Shimizu Kazuyuki
- Faculty of Science and Engineering, Iwate University
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- Kamada Yasuhiro
- Faculty of Science and Engineering, Iwate University
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- Seo Takeshi
- AISIN TAKAOKA CO., LTD.
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- Iwase Yoshitaka
- AISIN TAKAOKA CO., LTD.
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- Zhang Zhong-Zhi
- AISIN TAKAOKA CO., LTD.
Bibliographic Information
- Other Title
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- 型温を変えた自動車用ダイクエンチ鋼のビッカース硬さと電磁気的性質の相関
Abstract
<p>The microstructures, Vickers hardness, and electromagnetic properties of the automotive die-quenched steel were investigated under various die temperatures. The positive correlations between hardness and the coercivity of magnetic hysteresis loop and between hardness and electrical resistance were confirmed above the hardness of HV370. EBSD and TEM observations reveal that the die-quenched steels contain both fresh martensite and auto-tempered martensite due to the high martensite transformation temperature of the steel. Neural network analysis shows an increase of auto-tempered martensite with increasing die-temperature, which causes the positive correlation. This study demonstrates the usefulness of nondestructive electromagnetic evaluation of the hardness in die-quenched automotive steel components during manufacturing process.</p>
Journal
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- Journal of the Japan Institute of Metals and Materials
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Journal of the Japan Institute of Metals and Materials 87 (4), 132-138, 2023-04-01
The Japan Institute of Metals and Materials
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Keywords
Details 詳細情報について
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- CRID
- 1390295568860591360
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- ISSN
- 18806880
- 24337501
- 00214876
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
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- Abstract License Flag
- Disallowed