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Papers by Author: J.H. Kim

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Effect of Carbon Addition on the Thermal Stability and Glass Forming Ability of Misch Metal-Based Bulk Metallic Glass Matrix Composites

Authors: J.H. Kim, J.S. Park, Hyo Tae Jeong, H.J. Chang, Won Tae Kim, Do Hyang Kim

379

Development of Shear Bands in a Bulk Metallic Glass and Composite upon Cold Rolling

Authors: J.S. Park, H.K. Lim, J.H. Kim, J.M. Park, H.J. Chang, Won Tae Kim, Do Hyang Kim

363

Ti-Based Bulk Metallic Glass with High Cold Workability at Room Temperature

Authors: J.M. Park, J.S. Park, J.H. Kim, Myung Hyun Lee, Won Tae Kim, Do Hyang Kim

Abstract: The cold workability of Ti-based bulk metallic glasses (BMGs) have been investigated. Ti45Zr16Be20Cu10Ni9 BMG with a large compressive plastic strain of 4.7 % shows a high cold workability, i.e. total reduction ratio of 50 % by cold rolling at room temperature. The multiple shear bands formed during rolling are effective in enhancing the plasticity. The cold rolled Ti45Zr16Be20Cu10Ni9 BMG (reduction ratio: 30 %) exhibits a large plastic strain of ~14 %.

3431

Development of Ni-Nb-Ta Metallic Glass Particle Reinforced Al Based Matrix Composites

Authors: Myung Hyun Lee, J.H. Kim, J.S. Park, Won Tae Kim, Do Hyang Kim

Abstract: Metallic glass particle reinforced Al-6.5Si-0.25Mg (wt%) alloy matrix composites have been fabricated using infiltration casting process. The Al-Si-Mg alloy melt infiltrates into the porous Ni-Nb-Ta metallic glass pre-form by applying the pressure. The Ni60Nb20Ta20 metallic glass particles are homogeneously distributed in the matrix. The composite exhibits higher yield strength than the monolithic Al-6.5Si-0.25Mg (wt%) alloy.

3427

Authors: K. Hashimoto, P.Y. Park, J.H. Kim, Eiji Akiyama, H. Habazaki, A. Kawashima, K. Asami

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