caa a22 4500 47712223X CHVBK 20180405111639.0 cr unu---uuuuu 170330e19960801xx s 000 0 eng 10.1007/BF03026095 doi (NATIONALLICENCE)springer-10.1007/BF03026095 Microstructural evolution in a strip-cast Ni-base superalloy [Elektronische Daten] [D. Kim, D. Kim, D. Choo, H. Moon] Microstructure and mechanical properties of the strip-cast Ni-base superalloy(Hastelloy-X) alloy have been compared with those of a conventionally ingot-cast alloy. As-cast strip shows a fine columnar dendritic structure as a result of a relatively high cooling rate of 102 -104 K/sec during the process. The alloying elements, such as Cr and Fe, are homogeneously distributed in the γ matrix of the as-cast strip. Whereas, Mo is segregated at the center part of the as-cast strip. Mo distribution, however, becomes homogeneous after cold rolling and subsequent heat treatment at 1175°C. Two types of carbide, a Mo-rich M6C type and a Cr-rich M23C6 type, are present in the γ matrix of the as-cast and rolled strips. Rolling and subsequent heat treatment of the strip-cast alloy results in a fine grain structure compared to the ingot-cast alloy. The γ matrix grains in stripcast and ingot-cast alloy are approximately 14 μm and 34 μm in diameter respectively. Superior tensile properties in the strip-cast alloy is due to the fine microstructural evolution during the process. Springer, 1996 Kim D. Center for Advanced Aerospace Materials, Pohang University of Science and Technology Pohang, 790-600, Kyungbuk, Korea aut Choo D. Center for Advanced Aerospace Materials, Pohang University of Science and Technology Pohang, 790-600, Kyungbuk, Korea aut Moon H. Center for Advanced Aerospace Materials, Pohang University of Science and Technology Pohang, 790-600, Kyungbuk, Korea aut Metals and Materials The Korean Institute of Metals and Materials 2/4(1996-08-01), 211-217 1598-9623 2:4<211 1996 2 12540 https://doi.org/10.1007/BF03026095 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF03026095 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kim D. Center for Advanced Aerospace Materials, Pohang University of Science and Technology Pohang, 790-600, Kyungbuk, Korea aut NATIONALLICENCE 700 1- Choo D. Center for Advanced Aerospace Materials, Pohang University of Science and Technology Pohang, 790-600, Kyungbuk, Korea aut NATIONALLICENCE 700 1- Moon H. Center for Advanced Aerospace Materials, Pohang University of Science and Technology Pohang, 790-600, Kyungbuk, Korea aut NATIONALLICENCE 773 0- Metals and Materials The Korean Institute of Metals and Materials 2/4(1996-08-01), 211-217 1598-9623 2:4<211 1996 2 12540 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer