알루미늄 판재의 성형성 향상을 위한적외선 국부 열처리법의 곡선형태 적용에 관한 연구 A Study on the Infrared Local Heat Treatment of Curved Line for Aluminum Alloy Sheet

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Auto industries have tried to employ lightweight alloys to improve the fuel efficiency of manufactured vehicles, as the environmental concern becomes an important issue. Even though the aluminum alloy is one of the most appropriate lightweight alloys for auto parts, the low formability of an aluminum alloy has been an obstacle to its application. In order to resolve the low formability problem, a recent study (Lee et al., 2017 [1]) showed that the infrared (IR) local heat treatment can improve the formability with a reduction of heating energy. However, the aforementioned study was limited to only a linear line heating. Since many of the available auto parts as applicable to vehicle manufacturing have a curved line shape, the heating experiments for a curved line should be studied. The possibility of building IR lamps having complex shapes is an advantage of the IR lamp, since it can control the heating shape. This work conducted the IR local heat treatment for the curved line. The experimental results show that the IR local heat treatment can improve the formability of the aluminum alloy for curved line. Additionally, it is shown that the IR local heat treatment also reduces the heating energy when it is compared with the furnace heating which heats a blank as a whole. A numerical simulation with a stress-based forming limit diagram also supports the experimental results
Publisher
한국소성가공학회
Issue Date
2018
Language
Korean
Keywords

AA5083; Formability; Infrared local heat treatment; Curved line shape; Stress-based forming limit diagram

Citation

소성가공, v.27, no.2, pp.87 - 92

ISSN
1225-696X
URI
http://hdl.handle.net/10203/247177
Appears in Collection
ME-Journal Papers(저널논문)
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