Zobrazeno 1 - 10
of 120
pro vyhledávání: '"SI YOUNG CHANG"'
Autor:
Hyunseung Lee, Si Young Chang
Publikováno v:
Archives of Metallurgy and Materials, Vol vol. 69, Iss No 2, Pp 475-478 (2024)
In this study, pure Ti, Al, Dy powders were ball-milled with zirconia balls in argon atmosphere for 3 h at 800 rpm, producing a Ti- 6 wt.% Al- 4 wt.% Dy alloy powder. The alloy powder was consolidated by SPS technique at 1373 K for 15 min under 50 MP
Externí odkaz:
https://doaj.org/article/0cd9dbf4f13c44ab8ca2d72b1124f912
Publikováno v:
Archives of Metallurgy and Materials, Vol vol. 68, Iss No 1, Pp 81-84 (2023)
The effects of different types of balls on spark plasma sintering (SPS) characteristics of high energy ball milled Ti-48wt% Al-4wt% Nd powders were investigated. After ball milling with STS balls and zirconia balls at 800 rpm for 3 h in argon atmosph
Externí odkaz:
https://doaj.org/article/b4ba767ebbaf4f0b85a71b184336ee66
Publikováno v:
Archives of Metallurgy and Materials, Vol vol. 66, Iss No 3, Pp 789-793 (2021)
In this study, the alloying of Ti, Al and Dy powders by high energy ball milling, and the spark plasma sintering (SPS) characteristics of as milled powders have been investigated based on the observation of microstructure. Pure Ti, 6wt% Al and 4wt% D
Externí odkaz:
https://doaj.org/article/319b285a124e4cecb1d86b1a1f1c0072
Publikováno v:
Archives of Metallurgy and Materials, Vol vol. 64, Iss No 2, Pp 565-569 (2019)
The Mn-Zn ferrite powders prepared by high energy ball milling were heat-treated, subsequently compacted and sintered by spark plasma sintering (SPS). Based on the observation of microstructure, the characteristics of samples after SPS were investiga
Externí odkaz:
https://doaj.org/article/9eb5f1fdf221431590b454b9bb2a73ec
Publikováno v:
Korean Journal of Materials Research. 31:677-681
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::820940cdee595caf714503910576e820
https://doi.org/10.3740/mrsk.2021.31.12.677
https://doi.org/10.3740/mrsk.2021.31.12.677
Publikováno v:
Korean Journal of Materials Research. 30:111-116
Two different casting speeds of 60 and 80mm/min are adopted to determine the effect of casting speed on the microstructure and mechanical properties of Al-Mg-Si/Al hybrid material prepared by duo-casting. The obtained hybrid material has a uniform an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::095285cfda4f40f68752568728e8cea0
https://doi.org/10.3740/mrsk.2020.30.3.111
https://doi.org/10.3740/mrsk.2020.30.3.111
Publikováno v:
Korean Journal of Materials Research. 30:51-56
In this study, three kinds of metal chills such as SS400, AC4CH and brass, with different thicknesses of 40 ~ 80 mm, were applied for low pressure casting of Al-Si alloy to control cooling rate. The microstructural characteristics with increasing coo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::51c46914f9e383b20c5071677ad0f0f8
https://doi.org/10.3740/mrsk.2020.30.2.51
https://doi.org/10.3740/mrsk.2020.30.2.51
Autor:
Y.H. Kim, Wonmok Lee, C.J. Van Tyne, K.B. Kim, C.H. Jeong, Y. W. Cheon, Si Young Chang, Y. H. Yoon
Publikováno v:
Ceramics International. 44:19771-19778
Elemental Ti and Al powders with a composition of Ti-25 at% Al, with and without 2 wt% steric acid as a process control agent, were ball-milled at 1000 rpm for 1 h using a Spex mill/mixer. The prepared powder mixture was then consolidated using an el
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b3ec386ecc6e5519215117e11dd6ac77
https://doi.org/10.1016/j.ceramint.2018.07.233
https://doi.org/10.1016/j.ceramint.2018.07.233
Publikováno v:
Korean Journal of Materials Research. 28:499-505
This investigates the microstructure and mechanical properties of Al hybrid material prepared by electromagnetic duo-casting to determine the effect of heat treatment. The hybrid material is composed of an Al-Mg-Si alloy, pure Al and the interface be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2261b8b8e6294529da2430798eb54848
https://doi.org/10.3740/mrsk.2018.28.9.499
https://doi.org/10.3740/mrsk.2018.28.9.499
Publikováno v:
Archives of Metallurgy and Materials, Vol 62, Iss 2, Pp 1281-1285 (2017)
A single pulse of 2.0 to 3.5 kJ of input energy from a 450 mF capacitor was applied to a commercially pure Ti rod in a N2atmosphere. The surface of the Ti rod transformed from TiO2into titanium nitride in times as short as 159 msec, providing a bimod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::26e6ca789f9101c29e11796ff71c1466
http://www.degruyter.com/view/j/amm.2017.62.issue-2/amm-2017-0193/amm-2017-0193.xml?format=INT
http://www.degruyter.com/view/j/amm.2017.62.issue-2/amm-2017-0193/amm-2017-0193.xml?format=INT