Effect of microstructure on the properties of high boron and carbon steel powders
The current work addresses the microstructure and properties of high boron and carbon steel powders manufactured by gas atomization. XRD, SEM, and EDS analysis revealed that various carbo-borides formed within the ferritic matrix. Boron and carbon similarly affect the hardness and density of steel powders. When the combined boron and carbon content in steel powders exceeds 6 mass%, the obtained hardness is above 1200 HV. Shot peening treatment using high boron and carbon steel powders with ultra-high hardness exhibits a significant increment in the compressive residual stress of vacuum-carburized JIS SCM415 steel, compared to conventional steel powders.
Authors
- Ngo Huynh Kinh Luan (ORCID: https://orcid.org/0009-0003-3671-374X)
- Kaoru Yamamoto (ORCID: https://orcid.org/0000-0001-8977-5133)
- Tetsuya Okuyama
- Masaki Kudo
Institutions
- Hokkaido University of Science (JP)
- Kyushu University (JP)
- Hokkaido University (JP)
- Tokoha Gakuen University (JP)
- National Institute of Technology, Kurume College (JP)
Publication Details
- Journal
- Powder Metallurgy
- Published
- 2025-09-12
- DOI
- https://doi.org/10.1177/00325899251370799
- Primary Topic
- Metal and Thin Film Mechanics
- Type
- article
- Field-Weighted Citation Impact
- 0.00