Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Ozkan GOKCEKAYA"'
Publikováno v:
Journal of Materials Research and Technology, Vol 33, Iss , Pp 7333-7344 (2024)
The process of employing laser powder bed fusion (L-PBF) process to refractory materials, such as chromium (Cr), remains challenging because of its high ductile-brittle transition temperature. Therefore, a strategy is required to increase the process
Externí odkaz:
https://doaj.org/article/e8bc4cfa3f574e508a2aa91175f38f3f
Publikováno v:
Materials & Design, Vol 241, Iss , Pp 112885- (2024)
The metal-based 2D auxetic lattice structures hold the potential for multifunctional tasks in aerospace applications. However, the compression response of those manufactured by powder bed fusion process is underexplored. This study proposes a compreh
Externí odkaz:
https://doaj.org/article/9ee28c36bd334482a07804054298bd7e
Publikováno v:
Journal of Materials Research and Technology, Vol 27, Iss , Pp 6192-6210 (2023)
The 2D double arrow-headed (DAH) lattice structures, which are promising cellular structures for impact mitigation, remain relatively unexplored in terms of their compression response when manufactured using the powder bed fusion process with Ti6Al4V
Externí odkaz:
https://doaj.org/article/6cb8c771c6f1413eabb87e6cf3d75f96
Autor:
Ozkan Gokcekaya, Takuya Ishimoto, Yuki Nishikawa, Yong Seong Kim, Aira Matsugaki, Ryosuke Ozasa, Markus Weinmann, Christoph Schnitter, Melanie Stenzel, Hyoung Seop Kim, Yoshitsugu Miyabayashi, Takayoshi Nakano
Publikováno v:
Materials Research Letters, Vol 11, Iss 4, Pp 274-280 (2023)
This study developed a non-equiatomic Ti28.33Zr28.33Hf28.33Nb6.74Ta6.74Mo1.55 super-solid solutionized BioHEA using laser powder bed fusion (LPBF) to reach the full potential as BioHEA. We succeeded in significant suppression of elemental segregation
Externí odkaz:
https://doaj.org/article/828c319510c849359e9d21f174ff98f6
Autor:
Sung-Hyun Park, Ozkan Gokcekaya, Ryosuke Ozasa, Ken Cho, Hiroyuki Y. Yasuda, Myung-Hoon Oh, Takayoshi Nakano
Publikováno v:
Crystals, Vol 13, Iss 12, p 1629 (2023)
To promote the use of γ-TiAl alloys in various domains, such as the aerospace industry, it is pivotal to investigate the unusual phase transformation from rapidly solidified and metastable γ-TiAl toward the equilibrium state. In this study, the mic
Externí odkaz:
https://doaj.org/article/a5c09e22183c46a59700b467b3220c7b
Autor:
Aamer Nazir, Ozkan Gokcekaya, Kazi Md Masum Billah, Onur Ertugrul, Jingchao Jiang, Jiayu Sun, Sajjad Hussain
Publikováno v:
Materials & Design, Vol 226, Iss , Pp 111661- (2023)
Extensive research on nature-inspired cellular metamaterials has globally inspired innovations using single material and limited multifunctionality. Additive manufacturing (AM) of intricate geometries using multi-materials provides additional functio
Externí odkaz:
https://doaj.org/article/b04606e374ab41b2b41752eb7d8c9bc1
Autor:
Yusufu Ekubaru, Ozkan Gokcekaya, Takuya Ishimoto, Kazuhisa Sato, Koki Manabe, Pan Wang, Takayoshi Nakano
Publikováno v:
Materials & Design, Vol 221, Iss , Pp 110976- (2022)
The bimodal microstructure, which comprises ultrafine grains (UFGs) forming along the melt pool boundary and relatively coarse grains inside the melt pool, is a characteristic of the Sc-Zr-modified Al–Mg-based alloy (Scalmalloy) microstructure manu
Externí odkaz:
https://doaj.org/article/cc5bfedccae046ed9b6a02e2e778218e
Publikováno v:
Additive Manufacturing Letters, Vol 1, Iss , Pp 100016- (2021)
The laser powder bed fusion (LPBF) of pure tungsten for the fabrication of near-fully dense components is challenging owing to the intrinsic properties of tungsten. In this study, routine, gas-atomized, and plasma-processed tungsten powder samples we
Externí odkaz:
https://doaj.org/article/67cd53bb9d0c4f47bf9003c1a256a997
Publikováno v:
Crystals, Vol 12, Iss 10, p 1348 (2022)
Laser powder bed fusion (LPBF)-manufactured Sc-Zr-modified Al–Mg alloy (Scalmalloy) has a bimodal microstructure comprising coarse grains (CGs) in the hot melt pool area and ultrafine grains (UFGs) along the melt pool boundaries (MPBs). Owing to th
Externí odkaz:
https://doaj.org/article/ff86a95bd7a440ed82d80b43a5e784e8
Publikováno v:
Metals, Vol 12, Iss 2, p 306 (2022)
The ion nitriding behavior of AISI 316L austenite stainless steel was investigated at different nitriding times (2 h, 4 h, and 9 h) and temperatures (450 °C, 500 °C, and 550 °C). The structural characterization has been assessed by several conside
Externí odkaz:
https://doaj.org/article/4198f0a6697143e2bc48996acbd970c7