Zobrazeno 1 - 10
of 63
pro vyhledávání: '"Kazutaka OKAMOTO"'
Autor:
Shigeki HIRASAWA, Harsha BADARINARAYAN, Kazutaka OKAMOTO, Toshio TOMIMURA, Tsuyoshi KAWANAMI, Shigeki HIRANO
Publikováno v:
Journal of Thermal Science and Technology, Vol 4, Iss 2, Pp 260-271 (2009)
Friction stir spot welding (FSSW) is a new metal-joining process, and a numerical simulation code to calculate optimal welding conditions is desired. In this paper, we analyzed temperature distribution and plastic deformation flow during the FSSW pro
Externí odkaz:
https://doaj.org/article/424db62790864fb78b66dc78c7737099
Publikováno v:
IEEE Transactions on Applied Superconductivity. 28:1-5
We measured the critical tensile strains at room temperature and the critical bending strains of in situ round MgB2 wires, and both critical strain values agreed well with each other. The characteristic I – V curve was seen at the $I_{{\text{c}}}$
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::35efc4890d8dab2e53244602473ef69b
https://doi.org/10.1109/tasc.2018.2797978
https://doi.org/10.1109/tasc.2018.2797978
Publikováno v:
Journal of the Japan Society of Powder and Powder Metallurgy. 63:63-69
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::96e7e81420dd2cffedfa2e16b1e70479
https://doi.org/10.2497/jjspm.63.63
https://doi.org/10.2497/jjspm.63.63
Autor:
Qudong Wang, Yan Gao, Kazutaka Okamoto, Norikazu Takahashi, Dongdi Yin, Changjiang Chen, Masato Sasaki
Publikováno v:
Essential Readings in Magnesium Technology ISBN: 9783319485881
Essential Readings in Magnesium Technology
ResearcherID
Essential Readings in Magnesium Technology
ResearcherID
Commercial magnesium alloys have a great potential for structural applications in automotive due to their significant weight saving. However, they have poor creep resistance at temperature over 125°C, thus making them inadequate for power train appl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e14acff7a2b680fb2008f32072b18b76
https://doi.org/10.1007/978-3-319-48099-2_52
https://doi.org/10.1007/978-3-319-48099-2_52
Publikováno v:
Materials Science Forum. :990-995
Bobbin FSW technique is assessed in terms of process productivity and robustness considering the metallurgical and mechanical qualities of the joint. Several different designed bobbin tools were applied to aluminium A6xxx alloy extrusions, at feed ra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5445b432b9cd5383c67f5a067a87927e
https://doi.org/10.4028/www.scientific.net/msf.706-709.990
https://doi.org/10.4028/www.scientific.net/msf.706-709.990
Autor:
Kyung-Hwan Chung, Daeyong Kim, Robert H. Wagoner, Wonoh Lee, Kwansoo Chung, Junehyung Kim, Kazutaka Okamoto, Chongmin Kim
Publikováno v:
Metals and Materials International. 17:83-98
Springback behavior of automotive friction stir welded TWB (tailor welded blank) sheets was experimentally investigated and the springback prediction capability of the constitutive law was numerically validated. Four automotive sheets, aluminum alloy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff96fe71ea91eac64eb154bf1d7ae504
https://doi.org/10.1007/s12540-011-0212-2
https://doi.org/10.1007/s12540-011-0212-2
Publikováno v:
Materials Research Express. 6:026003
Nowadays, in situ- and ex situ-processed MgB2 superconducting wires are commercially available. A premix process is a hybrid of the in situ and ex situ processes, in which a mixture of magnesium, boron, and MgB2 powders is used as a precursor. Hence,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad9585e6ce37cabdc2bb011679de491b
https://doi.org/10.1088/2053-1591/aaeeb8
https://doi.org/10.1088/2053-1591/aaeeb8
Publikováno v:
Metallurgical and Materials Transactions A. 42:488-507
Friction stir welding (FSW) takes place in the solid state, thus providing potential advantages of welds of high strength and ductility because of fine microstructures. However, post-FSW heat treatment can create very coarse grains, potentially reduc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb1c21125ef2bb3897f56f5c8fc2992c
https://doi.org/10.1007/s11661-010-0426-9
https://doi.org/10.1007/s11661-010-0426-9
Publikováno v:
Journal of Materials Processing Technology. 210(11):1455-1463
The effect of tool geometry on the plastic flow and material mixing during friction stir spot welding (FSSW) is investigated using the particle method approach. For spot welds made with a cylindrical pin tool with flat shoulder, the model predicts th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d06deabe50dcafcadcdf7e5cec1b4406
https://hdl.handle.net/20.500.14094/90002185
https://hdl.handle.net/20.500.14094/90002185
Publikováno v:
Science and Technology of Welding and Joining. 15:319-324
In the present study, an attempt was made to join two dissimilar light metal alloys which are becoming increasingly familiar in the automotive industry, i.e. AA5083 aluminium alloy and AZ31 magnesium alloy, by the friction stir spot welding process.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::91fd7fc966e64ca9080419a5a3c486ab
https://doi.org/10.1179/136217109x12568132624208
https://doi.org/10.1179/136217109x12568132624208