Zobrazeno 1 - 10
of 296
pro vyhledávání: '"Kohsaku, Ushioda"'
Autor:
Abhishek Sharma, Takuya Miura, Yoshiaki Morisada, Kohsaku Ushioda, Sukhdeep Singh, Hidetoshi Fujii
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-13 (2024)
Abstract In the present investigation, friction stir welding (FSW) of a gamma prime (γ′) strengthened Haynes 282 nickel-base superalloy by using a novel hemispherical tool is documented. A joint efficiency of ~ 96% was achieved in the as-welded co
Externí odkaz:
https://doaj.org/article/a99a779251d4486b873fd026586a91f1
Autor:
Huilin Miao, Takayuki Yamashita, Kohsaku Ushioda, Seiichiro Tsutsumi, Yoshiaki Morisada, Hidetoshi Fujii
Publikováno v:
Journal of Advanced Joining Processes, Vol 10, Iss , Pp 100267- (2024)
Linear friction welding (LFW) is a well-established solid-state joining technique. However, its application in T-joint configurations remains unexplored. This study investigated the effects of welding parameters, such as oscillation direction, upset,
Externí odkaz:
https://doaj.org/article/b2d92b1e07384017ada7dc5ea0a8ca1c
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-8 (2024)
Abstract The dissimilar friction stir lap welding of AA6061-T6 and mild steel using the hemispherical tool tilted towards the retreating side is investigated. Critical defects such as hook features and internal voids are avoided by limiting the plung
Externí odkaz:
https://doaj.org/article/b8900087912a42c99b248499c523c4bd
Autor:
Takumi Aibara, Masayoshi Kamai, Yoshiaki Morisada, Kohsaku Ushioda, Takaaki Miyauchi, Shinichi Hasegawa, Hidetoshi Fujii
Publikováno v:
Journal of Advanced Joining Processes, Vol 9, Iss , Pp 100179- (2024)
A novel solid-state joining method, called cold spot joining (CSJ), has been successfully developed. In this method, the material near the joining interface undergoes plastic deformation under high pressure, forming a joining interface, while oxide l
Externí odkaz:
https://doaj.org/article/b0e5aad6d2b54e94831f3ec7aef37b2f
Publikováno v:
Journal of Materials Research and Technology, Vol 26, Iss , Pp 1151-1167 (2023)
In this study, heat-affected zone (HAZ) softening occurred in friction stir welding (FSW) joints of martensitic steels is suppressed through the short-time secondary hardening phenomenon initiated by adding V. Adding V significantly suppresses the HA
Externí odkaz:
https://doaj.org/article/40a0db4254be489a8b94d657355bd479
Publikováno v:
Journal of Materials Research and Technology, Vol 23, Iss , Pp 4334-4345 (2023)
Linear friction welding (LFW) was performed on face-centered cubic materials, that is, Al alloys (AA1050 and AA5052) with different stacking fault energies (SFEs). The pressure was controlled during the LFW to clarify the effects of temperature, stra
Externí odkaz:
https://doaj.org/article/a433f271d8184f40b6ae6929aef8f7e2
Publikováno v:
Journal of Materials Research and Technology, Vol 17, Iss , Pp 2419-2430 (2022)
The microstructure evolution of the AA5052-H34 joint and AA5083-O joint fabricated by linear friction welding (LFW) was evaluated in a wide range of interfacial temperatures, i.e., applied pressures. The grain refinement of Al alloys with high stacki
Externí odkaz:
https://doaj.org/article/96abc19e3805494195422677c43b4cb2
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-7 (2021)
Abstract It is known that one of the main concerns associated with the conventional welding of precipitation-strengthened Al alloys is the formation of softening regions, resulting in the deterioration of mechanical properties. In this study, we show
Externí odkaz:
https://doaj.org/article/b75da6fc65214264b5bda8102613eb94
Publikováno v:
In Journal of Magnesium and Alloys December 2020 8(4):1071-1083
Autor:
Kohsaku Ushioda
Publikováno v:
Science and Technology of Advanced Materials, Vol 21, Iss 1, Pp 29-42 (2020)
In order to exploit full potential of materials, it is necessary to fundamentally control their microstructures through grain refinement and orientation. Deformation and recrystallization are means to control the microstructure. Some recent examples
Externí odkaz:
https://doaj.org/article/e05bfe50912945fc918d41eb1c2d6339