자동차 차체용 알루미늄 합금 판재의 기계적특성과 부식피로수명

다국어 초록 (Multilingual Abstract)

The objective of this study is to compare the mechanical properties of 6000 series Al-Mg-Si aluminum alloy (AC120) with 5000 series Al-Mg aluminum alloy (TG25), and to investigate the influence of corrosion solution for fatigue life.<br/>
Comparing of TG25 and AC120 alloy sheets, TG25 alloy sheets showing higher plastic strain ratio and total elongation have better formability than AC120 alloy sheets. The hardness of nugget area was a little higher than that of base metal area and the columnar structure and dendritic structure was observed in nugget area. Also, grain coarsening was observed in HAZ(Heat Affected Zone). In a corrosion fatigue experiment, the fatigue life decreased as concentration increased, when a dipping time was constant. The fatigue life decreased as dipping time increased, when a concentration was constant.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 실험 방법
• 3. 결과 및 고찰
• 4. 결론
• 참고문헌