Zobrazeno 1 - 10
of 119
pro vyhledávání: '"YOUNG-OK YOON"'
Publikováno v:
Archives of Metallurgy and Materials, Vol vol. 69, Iss No 2, Pp 489-492 (2024)
Effects of Si and Mg as main elements on interface reaction between tool steel and molten Al alloy at 700°C were investigated. Pure aluminum and Al-10mass%Mg alloy showed relatively simple interfacial layers, whereas thicker, multi-layered reaction
Externí odkaz:
https://doaj.org/article/3b062e20792d43008eba407ee9b22817
Autor:
Sun-Ki Kim, Seong-Ho Ha, Bong-Hwan Kim, Young-Ok Yoon, Hyun-Kyu Lim, Shae K. Kim, Young-Jig Kim
Publikováno v:
Archives of Metallurgy and Materials, Vol vol. 66, Iss No 4, Pp 947-950 (2021)
Dissolution of Si in Al-5 mass%Mg alloy melt by the reduction of SiO2 and its effect on microstructure formation of the alloy after solidification were investigated. Al-5 mass%Mg alloy without silica powder had approximately 0.05 mass%Si as an impuri
Externí odkaz:
https://doaj.org/article/5d2fb037c1614c089407bf9f39ded3d8
Autor:
Seong-Ho Ha, Young-Chul Shin, Bong-Hwan Kim, Young-Ok Yoon, Hyun-Kyu Lim, Sung-Hwan Lim, Shae K. Kim
Publikováno v:
Archives of Metallurgy and Materials, Vol vol. 66, Iss No 4, Pp 959-962 (2021)
In this study, precipitation of Ca in Al-Mg alloys containing a trace of Ca during homogenization was investigated using a transmission electron microscope (TEM) and calculated phase diagrams. TEM result indicated that the Ca-based particles found in
Externí odkaz:
https://doaj.org/article/bf43a159fc0649998f4a6d916e730fbd
Publikováno v:
Archives of Metallurgy and Materials, Vol vol. 66, Iss No 3, Pp 695-698 (2021)
Influence of Si addition on oxide layer growth of Al-6 mass%Mg alloys in molten state was investigated in this study. After melt holding for 24 h, the melt surface of only Si-free alloy became significantly bumpy, while no considerably oxidized surfa
Externí odkaz:
https://doaj.org/article/f66a96e9a2de4faf92c4297e16d19140
Publikováno v:
Archives of Metallurgy and Materials, Vol vol. 66, Iss No 3, Pp 699-702 (2021)
Effect of Cu addition on oxide growth of Al-7 mass%Mg alloy at high temperature was investigated. As-cast microstructures of Al-7 mass%Mg and Al-7 mass%Mg-1 mass%Cu alloys showed α-Al dendrites and area of secondary particles. The 1 mass%Cu addition
Externí odkaz:
https://doaj.org/article/e0b0b9bbc30843e79429b6537893c80f
Autor:
Young-Gil Jung, Wonseok Yang, Yong Joo Kim, Shae.K. Kim, Young-Ok Yoon, Hyunkyu Lim, Do Hyang Kim
Publikováno v:
Journal of Magnesium and Alloys, Vol 9, Iss 5, Pp 1619-1631 (2021)
In this study, the effects of Ca addition on the microstructure, thermal properties, and mechanical properties of a Mg-6.0Zn-1.2Y-0.7Zr (ZWK611) alloy at room temperature and 150 °C were investigated. With an increase in the Ca content, the ignition
Externí odkaz:
https://doaj.org/article/111cdbfdccce4eea8e69cbff15685aaf
Autor:
Seung-Yoon Yang, Da-Bin Lee, Kweon-Hoon Choi, Nam-Seok Kim, Seong-Ho Ha, Bong-Hwan Kim, Young-Ok Yoon, Hyun-Kyu Lim, Shae K. Kim, Young-Jig Kim
Publikováno v:
Metals, Vol 11, Iss 3, p 410 (2021)
For the purpose of applying a modified 5083 alloy (New 5083M alloy) with high Mg content in various automotive sheet parts, the stretch forming behavior of the 5083M alloy was studied in tensile mode at a wide range of processing conditions. The tens
Externí odkaz:
https://doaj.org/article/eb27f3878db14e8ab87bcedfa8a1db96
Autor:
Kweon-Hoon Choi, Bong-Hwan Kim, Da-Bin Lee, Seung-Yoon Yang, Nam-Seok Kim, Seong-Ho Ha, Young-Ok Yoon, Hyun-Kyu Lim, Shae-Kwang Kim
Publikováno v:
Metals, Vol 11, Iss 3, p 445 (2021)
High strength Al-Mg alloy is an attractive material that has the characteristic of increasing both strength and elongation by adding more solute Mg. However, there is a limitation in the oxidation issue during the casting process when it contains hig
Externí odkaz:
https://doaj.org/article/eff9648e8a98414b9ac660a8c97c253d
Autor:
Nam-Seok Kim, Kweon-Hoon Choi, Seung-Yoon Yang, Seong-Ho Ha, Young-Ok Yoon, Bong-Hwan Kim, Hyun-Kyu Lim, Shae K. Kim, Soong-Keun Hyun
Publikováno v:
Metals, Vol 11, Iss 2, p 288 (2021)
A hot compression test of new Al-6Mg and Al-8Mg alloys was conducted to understand the dynamic recrystallization (DRX) behavior by Mg contents. To investigate the hot workability of Al-Mg with high Mg contents, the hot deformation behavior of Al-6Mg
Externí odkaz:
https://doaj.org/article/3375cdda388648a39469469fd6b089e5
Publikováno v:
BioInvasions Record; Mar2024, Vol. 13 Issue 1, p27-35, 9p