- 著者
- 市川 裕士 所 竜太郎 亀山 雄高
- 出版者
- 公益社団法人 日本金属学会
- 雑誌
- 日本金属学会誌 (ISSN:00214876)
- 巻号頁・発行日
- pp.J2019033, (Released:2019-11-15)
- 参考文献数
- 17
- 被引用文献数
- 1
Fine particle peening (FPP) is a surface modification process in which fine hard metallic particles project onto the substrate. During this process, shot particles that remain transfer to the substrate and form a complex and multi-layered lamellar structure in which transferred fragments are distributed in the depth direction and several tens of micrometers from the surface. Because the bond strength at each interface of this structure and its generation mechanism are unclear, the local bond strength of the laminated interface was evaluated in this study by a microscale tensile test conducted by focus ion beam facilities. In the transferred lamellar modified region, the hardness was considerably higher than that of as-received materials, and the microscopic bonding strength between the transferred copper or iron and the aluminum matrix was 300 MPa or greater. When steel particles were used with FPP, iron oxide was mainly transferred to the aluminum matrix. However, copper plating on the particles suppressed the oxidation of the steel composing the particles and, as a result, the metallic steel was transferred. The bonding strength was improved by oxidation-controlled steel particles.
1 0 0 0 OA ELID法による鏡面研削効果と特性
1 0 0 0 OA AIH-FPP処理によるCr/Ni拡散層の創成と炭素鋼の耐高温酸化性に及ぼすその効果
- 著者
- 武末 翔吾 岩前 翔太 亀山 雄高 小茂鳥 潤 深沢 剣吾 三阪 佳孝
- 出版者
- 一般社団法人 日本機械学会
- 雑誌
- 日本機械学会論文集 (ISSN:21879761)
- 巻号頁・発行日
- vol.83, no.851, pp.17-00151-17-00151, 2017 (Released:2017-07-25)
- 参考文献数
- 19
To improve the high-temperature oxidation resistance of grade S45C carbon steel, we formed a Cr / Ni diffusion layer on the surface of carbon steel by atmospheric-controlled induction heating fine particle peening (AIH-FPP) treatment. Cr and Ni particles were mechanically milled in planetary ball mills and used as shot particles in the AIH-FPP treatment to create a Cr / Ni diffusion layer. High temperature oxidation tests were carried out at 900°C for 100 hours to evaluate the high-temperature oxidation resistance of the AIH-FPP treated specimen. The mechanically milled particles and specimen were analyzed using a scanning electron microscope, an energy dispersive X-ray spectrometer, and an X-ray diffractometer. Results show that the AIH-FPP treated specimen prepared using mechanically milled particles formed a Cr / Ni diffusion layer on the carbon steel. The carbon steel sample with the Cr / Ni diffusion layer exhibited improved high-temperature oxidation resistance compared to the untreated sample. This is due to the formation of Cr and Ni oxidized layers on the treated surface, which inhibited oxidation of the inner substrate. The results indicate that a Cr / Ni diffusion layer formed by AIH-FPP treatment using mechanically milled particles can improve the high-temperature oxidation resistance of grade S45C carbon steel.