Takashi Tanno | Researchain

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Featured researches published by Takashi Tanno.

Journal of Nuclear Science and Technology | 2014

Weldability of dissimilar joint between PNC-FMS and Type 316 steel under electron beam welding

Yasuhide Yano; Takeji Kaito; Takashi Tanno; Satoshi Ohtsuka

The dissimilar butt welding joint of 11Cr-ferritic/martensitic steel (PNC-FMS) and Type 316 austenitic stainless steel (SUS316) produced by electron beam (EB) welding was studied. This study was carried out to investigate optimization of EB welding and postweld heat treatment (PWHT) for the wrapper tube materials. Optimum EB welding conditions were a focus position of 30–40 mm and a welding speed of 1750–2000 mm/min, and optimum PWHT was performed after welding at 690 °C for 60 min. As a result, no formation of δ-ferrite was observed adjacent to the fusion zone, and the mechanical properties of the welds were similar to those of the base material. In this regard, EB welding is a proper fusion welding process for dissimilar PNC-FMS and SUS316.

Journal of Nuclear Materials | 2013

Evaluation of mechanical properties and nano-meso structures of 9–11%Cr ODS steels

Takashi Tanno; Satoshi Ohtsuka; Yasuhide Yano; Takeji Kaito; Yojiro Oba; Masato Ohnuma; Shin-ichi Koyama; Kenya Tanaka

Journal of Nuclear Materials | 2014

Effects of manufacturing process on impact properties and microstructures of ODS steels

Takashi Tanno; Satoshi Ohtsuka; Yasuhide Yano; Takeji Kaito; Kenya Tanaka

Journal of Nuclear Materials | 2013

Microstructure and high-temperature strength of high Cr ODS tempered martensitic steels

Satoshi Ohtsuka; Takeji Kaito; Takashi Tanno; Yasuhide Yano; Shin-ichi Koyama; Kosuke Tanaka

Nuclear materials and energy | 2016

Tensile properties and hardness of two types of 11Cr-ferritic/martensitic steel after aging up to 45,000 h

Yasuhide Yano; Takashi Tanno; Yoshihiro Sekio; Hiroshi Oka; Satoshi Ohtsuka; Tomoyuki Uwaba; Takeji Kaito

Journal of Nuclear Materials | 2017

Ultra-high temperature tensile properties of ODS steel claddings under severe accident conditions

Yasuhide Yano; Takashi Tanno; Hiroshi Oka; Satoshi Ohtsuka; T. Inoue; Shoichi Kato; Tomohiro Furukawa; Tomoyuki Uwaba; Takeji Kaito; Shigeharu Ukai; Naoko Oono; A. Kimura; Shigenari Hayashi; T. Torimaru

Materials Transactions | 2013