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논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 문영훈
- 발행연도
- 2014
- 저작권
- 부산대학교 논문은 저작권에 의해 보호받습니다.
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초록· 키워드
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Recently developed CaO added magnesium alloys have drawn a lot of attention since CaO addition into magnesium melt could prevent ignition subsequently allowing fire-proof property. The fire-proof characteristics of these CaO added magnesium alloys allowed much improved castability for industrial application. CaO addition into melt left micro or nano-sized Ca containing particles in magnesium matrix. However, it has not been well known what and how Ca-based particles would give an effect on formability of poor magnesium alloys.
In the present study, the effect of CaO addition on formability of magnesium alloy was studied using AZ61 alloy sheet. Various formability tests such as tensilet, Erichsen and limit drawing ratio tests were carried out to find out the effect of Ca-based particles on formability of AZ61 sheet. It has been found out that both CaO-containing and free AZ61 sheets basically have shown poor formability irrespective of CaO addition while formerly investigated AZ31 has shown better formability when 0.3wt.% CaO was added.
In the present study, the effect of CaO addition on formability of magnesium alloy was studied using AZ61 alloy sheet. Various formability tests such as tensilet, Erichsen and limit drawing ratio tests were carried out to find out the effect of Ca-based particles on formability of AZ61 sheet. It has been found out that both CaO-containing and free AZ61 sheets basically have shown poor formability irrespective of CaO addition while formerly investigated AZ31 has shown better formability when 0.3wt.% CaO was added.
목차
1. 서론 11.1 연구배경 및 목적 11.2 연구내용 42. 이론적배경 52.1 판재성형성평가 52.1.1 디프드로잉 62.1.2 초소성가공 82.2 마그네슘합금의 온간성형 103. 실험방법 133.1 실험소재 133.2 인장실험 143.3 에릭슨커핑실험 203.4 LDR(Limit drawing ratio)test 233.5 부풀림 실험 264. 실험결과 및 고찰 294.1 인장실험 및 Strain rate jump test 294.2 이방성계수측정실험 404.3 에릭슨커핑실험 464.4 LDR(Limit drawing ratio)test 494.5 부풀림실험 544.6 적용 615. 결론 64
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