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pro vyhledávání: '"Chang Ock Choi"'
Autor:
Chang Ock Choi, Jea-Young Choi
Beginnings of the Use of Metals and AlloysSelected, peer reviewed papers from the Ninth International Conference on the Beginnings of the Use of Metals and Alloys (BUMA IX), October 16 - 19, 2017, Busan, Korea
Autor:
Dae-Hwan Kim, Su-Gun Lim, Hee-Kyung Kim, Bong-Hak Seong, Chang-Ock Choi, Hyung-Won Park, Sung-Yong Shim
Publikováno v:
Journal of the Korea Foundry Society. 31:347-353
There is thixo-extrusion to form high strength aluminum alloy. But, it is a problem that grains become grain coarsening during reheating process because the alloy was exposed at high temperature. In order to solve grain growth during reheating proces
Autor:
Sang-Cheol Kil, Chang-Ock Choi
Publikováno v:
Journal of the Korea Foundry Society. 31:165-171
Publikováno v:
International Journal of Cast Metals Research. 16:113-117
A flake graphite cast iron was produced to determine the effect of rare earth (RE) additions on the microstructure and chilling tendency of low (0.01–0.03%S) and high (0.03–0.1%S) sulfur level cont...