The effects of grain size and pore size on the high cycle fatigue behavior of injection molded Ti-6Al-4V compacts

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

1 引用 (Scopus)

抜粋

Although titanium alloy compacts manufactured by metal injection molding (MIM) process have the same static mechanical properties as that of wrought materials with similar composition, their fatigue strength shows remarkably lower levels. In this study, improvement of the fatigue strength of injection molded Ti-6Al-4V alloy compacts was performed by refining the pore and grain sizes through different approaches such as the usage of fine powders, dual phase region sintering, and hydrogenation and dehydrogenation treatment. Especially, the effects of pore size and grain size on the fatigue strength were evaluated. Essentially, the relationship between the fatigue strength and the grain size for HIP treated compacts obeyed the Hall-Petch law. On the other hand, for the injection molded compacts with pores, it was found that the largest pore dominates the fatigue strength in the case of the large pore diameter ratio to the grain diameter, while the relative density influences on the fatigue strength when the pore diameter ratio is small.

元の言語英語
ホスト出版物のタイトルAdvances in Powder Metallurgy and Particulate Materials - 2018
ホスト出版物のサブタイトルProceedings of the 2018 International Conference on Powder Metallurgy and Particulate Material, POWDERMET 2018
出版者Metal Powder Industries Federation
ページ243-252
ページ数10
ISBN(電子版)9781943694181
出版物ステータス出版済み - 1 1 2018
イベント2018 International Conference on Powder Metallurgy and Particulate Material, POWDERMET 2018 - San Antonio, 米国
継続期間: 6 17 20186 20 2018

出版物シリーズ

名前Advances in Powder Metallurgy and Particulate Materials - 2018: Proceedings of the 2018 International Conference on Powder Metallurgy and Particulate Material, POWDERMET 2018
2018-June

会議

会議2018 International Conference on Powder Metallurgy and Particulate Material, POWDERMET 2018
米国
San Antonio
期間6/17/186/20/18

All Science Journal Classification (ASJC) codes

  • Metals and Alloys
  • Materials Chemistry
  • Surfaces and Interfaces

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  • これを引用

    Kudo, K., Shinagawa, K., & Miura, H. (2018). The effects of grain size and pore size on the high cycle fatigue behavior of injection molded Ti-6Al-4V compacts. : Advances in Powder Metallurgy and Particulate Materials - 2018: Proceedings of the 2018 International Conference on Powder Metallurgy and Particulate Material, POWDERMET 2018 (pp. 243-252). (Advances in Powder Metallurgy and Particulate Materials - 2018: Proceedings of the 2018 International Conference on Powder Metallurgy and Particulate Material, POWDERMET 2018; 巻数 2018-June). Metal Powder Industries Federation.