Fabrication of SUS316L Harmonic Structure Compacts by Bi-Modal Milling Process

• YAGI Koki

  Dept. Mechanical Engineering, Graduate School of Ritsumeikan University

• SHARMA Bhupendra

  Ritsumeikan University Research Organization of Science and Technology

• KAWABATA Mie

  Dept. Mechanical Engineering, Ritsumeikan University

• AMEYAMA Kei

  Dept. Mechanical Engineering, Ritsumeikan University

Bibliographic Information

Other Title

• バイモーダルミリング法によるSUS316L調和組織材料の作製
• バイモーダルミリングホウ ニ ヨル SUS316L チョウワ ソシキ ザイリョウ ノ サクセイ

Abstract

The synergy of high strength and ductility is crucial for industrial applications. Grain refinement strengthening is a well-known method for strength improvement. However, it leads to poor ductility due to plastic strain instability in the early stage of deformation. Recently developed novel heterogeneous microstructure designed materials called “Harmonic Structure” (HS) can overcome this strength-ductility trade-off. HS designed materials consist of grain size gradient wherein fine grains (‘Shell’) form a connected network surrounding coarse grains (‘Core’). The HS materials exhibit an outstanding combination of strength and ductility that is associated with high strain hardening due to suppressing local deformation. However, the conventional mechanical milling (MM) process for fabricating HS designed materials is time-consuming. Therefore, in the present study, a novel Bi-modal Milling (BiM) process is proposed to achieve HS designed materials more efficiently in a shorter time. The HS design has been applied to SUS316L powder via conventional MM and novel BiM process. Both the HS compacts exhibited approximately similar mechanical properties. Therefore, the proposed BiM technique is more appropriate for the industrial production of HS designed materials.

Journal

• Journal of the Japan Society of Powder and Powder Metallurgy

  Journal of the Japan Society of Powder and Powder Metallurgy 67 (5), 239-244, 2020-05-15

  Japan Society of Powder and Powder Metallurgy

Keywords

• heterogeneous structure
• Bi-Modal Milling
• mechanical milling
• strength and ductility
• mechanical properties

Details

• CRID: 1390848250111072768
• NII Article ID: 130007842695
• NII Book ID: AN00222724
• DOI: 10.2497/jjspm.67.239
• ISSN: 18809014
• ISSN: 05328799
• NDL BIB ID: 030458121
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I030458121
• Web Site: https://www.jstage.jst.go.jp/article/jjspm/67/5/67_239/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed