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Nobuhiro Fujita
Researcher at Nippon Steel
Publications - 252
Citations - 3215
Nobuhiro Fujita is an academic researcher from Nippon Steel. The author has contributed to research in topics: Ferrite (iron) & Austenite. The author has an hindex of 29, co-authored 252 publications receiving 3174 citations.
Papers
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Journal ArticleDOI
Changes of microstructures and high temperature properties during high temperature service of Niobium added ferritic stainless steels
TL;DR: In this article, changes of microstructures and high temperature properties in high temperature aging were investigated using several Niobium added ferritic stainless steels, and it was found that the microstructure stability of Nb-Ti-Mo alloyed steels in high- temperature aging is superior to that of nb added steels.
Journal ArticleDOI
Effect of Nb on high-temperature properties for ferritic stainless steel
TL;DR: In this article, the authors focused on improvement of the high-temperature proof strength of ferritic stainless steels, and the mechanism of high temperature strengthening by Nb addition, which was shown to be one of the most effective methods to improve proof strength at highmore temperature, was discussed.
Patent
Steel plate exhibiting excellent workability and method for producing the same
Naoki Yoshinaga,Nobuhiro Fujita,Manabu Takahashi,Koji Hashimoto,Shinya Sakamoto,Kaoru Kawasaki,Yasuhiro Shinohara,Takehide Senuma +7 more
TL;DR: A steel sheet with an average r-value of at least 1.2 and a rolling direction in the direction of 45 degrees to the rolling direction at least 0.9 is presented in this paper.
Patent
High-strength steel sheet, hot-dipped steel sheet, and alloy hot-dipped steel sheet that have excellent fatigue, elongation, and collision characteristics, and manufacturing method for said steel sheets
TL;DR: In this paper, a high-strength steel sheet with a tensile strength in a range of 590 MPa or more, and a ratio between the strength and the yield strength is in the range of 0.85 or more.
Patent
Hot-rolled steel plate superior in hole expandability and manufacturing method therefor
Nobuhiro Fujita,Kunio Hayashi,Daisuke Maeda,Kazuya Otsuka,Manabu Takahashi,Naoki Yoshinaga,大介 前田,直樹 吉永,和也 大塚,邦夫 林,展弘 藤田,学 高橋 +11 more
TL;DR: In this paper, the authors proposed a hot-rolled steel plate which has a small in-plane anisotropy and superior hole expandability, and provided a manufacturing method therefor.