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Vol.54, No.10, 759 ~ 768, 2016
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| Title |
| Effect of Cold Drawing and Heat Treatment on the Microstructure of Invar36 Alloy Wire |
| 한승엽 seung Youb Han , 장선아 Seon Ah Jang , 은희철 Hee-Chul Eun , 최정훈 Jung-Hoon Choi , 이기락 Ki Rak Lee , 박환서 Hwan Seo Park , 안도희 Do-Hee Ahn , 김수영 Soo Young Kim , 김재열 Jea Youl Kim , 신상용 Sang Young Shin |
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| Abstract |
| In this study, the effect of cold drawing and heat treatment on the microstructure of Invar36 alloy wire was investigated. Invar36 alloy wire is used as a transmission line core material, and is required to have high strength. The diameter of the Invar36 alloy wire specimens were reduced from 16 mm to 4.3 mm after three cold drawing and two heat treatment processed, thereby increasing tensile strength. Specimens were taken after each of the cold drawing and heat treatment processes, and their microstructure and tensile properties were analyzed. The Invar36 alloy γ-(Fe, Ni) phase matrix before the cold drawing and heat treatment processes. After the cold drawing processes, {220} and {200} textures were mainly achieved. After the heat treatment processes, a {220} recrystallization γ-(Fe, Ni)phase was formed with fine carbides. The recrystallization γ-(Fe, Ni) phase grains had low dislocation density, so they probably accommodated a large amount of deformation during the cold drawing processes. |
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| Key Words |
| Invar36 alloy, wire, cold drawing, heat treatment, microstructure |
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