Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Byung Gil Yoo"'
Autor:
Chang Wook Lee, Yeonjung Hwang, Uk Heo, Byung Gil Yoo, Ji Hong Yoo, Taejeong Kim, Kwang Min Yoon
Publikováno v:
Korean Journal of Metals and Materials. 60:801-810
Hot stamping technology has been steadily developed because it provides both excellent formability and high strength. With the development of TWB hot stamping technology, it is now possible to freely apply the required strength and thickness in the r
Publikováno v:
Metals, Vol 9, Iss 6, p 636 (2019)
Recently, hot stamping technology has been increasingly used in automotive structural parts with ultrahigh strength to meet the standards of both high fuel efficiency and crashworthiness. However, one issue of concern regarding these martensitic stee
Externí odkaz:
https://doaj.org/article/34036deadcb04565921f82e8bd8aa7b2
Autor:
Hye Jin Kim, Heon-Young Ha, Won-Seog Yang, Soon-Hyeok Jeon, Byung-Gil Yoo, Hyun-Young Chung, Yoo-Dong Chung
Publikováno v:
Journal of Alloys and Compounds. 735:2067-2080
This study examines the effects of titanium content on hydrogen embrittlement in hot-stamped boron steel, by employing an electrochemical cathodic charging method, slow rate tensile tests, and thermal desorption analyses. With increasing titanium con
Publikováno v:
Metals, Vol 9, Iss 6, p 636 (2019)
Metals
Volume 9
Issue 6
Metals
Volume 9
Issue 6
Recently, hot stamping technology has been increasingly used in automotive structural parts with ultrahigh strength to meet the standards of both high fuel efficiency and crashworthiness. However, one issue of concern regarding these martensitic stee
Autor:
Terence G. Langdon, Moo-Young Seok, Byung-Gil Yoo, Ruth Schwaiger, Jae-il Jang, Megumi Kawasaki, In-Chul Choi, Oliver Kraft
Publikováno v:
Materials Science and Engineering: A. 618:37-40
A Zn–22% Al eutectoid alloy was processed by high-pressure torsion (HPT) and its high-cycle fatigue behavior was explored using novel small-scale bending fatigue experiments. Testing of the finest grain region in each HPT disk showed that the fatig
Autor:
Won Il Park, Yong-Jae Kim, Won Woo Lee, Byung Gil Yoo, Seung Min Han, Hong Gyu Park, Jae-il Jang, In-Chul Choi
Publikováno v:
Acta Materialia. 61:7180-7188
External stresses are applied during operation or storage in flexible electronics, which makes understanding time-dependent plastic deformation of nanobuilding blocks more crucial for ensuring the reliability of the devices. Here, we systematically e
Autor:
Jae-il Jang, Y. M. Wang, In-Chul Choi, Ju-Young Kim, Moo-Young Seok, Byung-Gil Yoo, Yong-Jae Kim
Publikováno v:
International Journal of Plasticity. 41:53-64
Nanoscale time-dependent plastic deformation (creep) behavior of nanocrystalline (nc) Ni, at low stresses and at room temperature, was systematically explored through uniaxial creep experiments performed on nano-/micro-pillars (with diameters of 600,
Autor:
Jin-Yoo Suh, Yakai Zhao, In-Chul Choi, Upadrasta Ramamurty, Byung Gil Yoo, Yong-Jae Kim, Jae-il Jang
Publikováno v:
Acta Materialia. 60:6862-6868
The existence of an indentation size effect (ISE) in the onset of yield in a Zr-based bulk metallic glass (BMG) is investigated by employing spherical-tip nanoindentation experiments. Statistically significant data on the load at which the first pop-
Autor:
Byung-Gil Yoo, In-Chul Choi, Ting Y. Tsui, Jae-il Jang, Upadrasta Ramamurty, Ju-Young Kim, Hongbin Bei, Sanghoon Shim, Yong-Jae Kim
Publikováno v:
International Journal of Plasticity. 37:108-118
Room temperature, uniaxial compression creep experiments were performed on micro-/nano-sized pillars (having diameters in the range of 250-2000 nm) of a Zr-based bulk metallic glass (BMG) to investigate the influence of sample size on the time-depend
Autor:
Jin-Yoo Suh, In-Chul Choi, Jae-il Jang, Upadrasta Ramamurty, Byung-Gil Yoo, Yong-Jae Kim, Yakai Zhao
Publikováno v:
Scripta Materialia. 66:923-926
The size of the shear transformation zone (STZ) that initiates the elastic to plastic transition in a Zr-based bulk metallic glass was estimated by conducting a statistical analysis of the first pop-in event during spherical nanoindentation. A series