가열냉각법에 의한 마그네슘 합금의 판재 성형성개선 = Improvement on the formability of magnesium alloy sheet by heating and cooling method

다국어 초록 (Multilingual Abstract)

Magnesium alloys have been paid attention in automotive and industries as lightweight materials, and with these materials it has been attempted at deep drawing process for assessment of formability of sheet metal.
In this paper, in order to predict the effect of temperature on the formability of AZ31 magnesium alloy the relationship between punch load and punch stroke, the relationship between thickness strain and distance, are used at the temperature of room temperature, 100℃, 200℃ and 300℃.
For warm deep drawing process used by a local heating and cooling technique to improve the formability of AZ31 magnesium alloy, both die and blank holder were heated at warm temperature while the punch was kept at room temperature by cooling water. Warm deep-drawing process with considering heat transfer was simulated by finite element method to investigate the improvement of deep-drawability of Mg alloy sheet. The deformed blank in considering heat transfer was drawn successfully without any localized thinning and the cup height is higher in contrast to results of simulations in considering no heat transfer.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 인장 시험
• 3. 유한요소해석
• 4. 결과 및 고찰
• 5. 결론
• 후기
• 참고 문헌