Experimental Determination of Forming Limit Diagram and Springback Characteristics of AZ31B Mg Alloy Sheets at Elevated Temperatures
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- Kim Hyung Jong
- Division of Mechanical Engineering & Mechatronics, Kangwon National University
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- Choi Sun Chul
- Graduate School, Kangwon National University
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- Lee Kyoung Taek
- Technical Center, AUSTEM Co., Ltd
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- Kim Heon Young
- Division of Mechanical Engineering & Mechatronics, Kangwon National University
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A warm/hot formability testing apparatus was designed and fabricated for this study. The forming limit curve (FLC) and springback characteristics of AZ31B Mg alloy sheets at elevated temperatures of up to 300°C were investigated. The forming limit increased rapidly with temperature up to 200°C, and increased slightly thereafter. In the range from 200 to 300°C, the FLC0 was found to be six to seven times higher than at room temperature. In isothermal springback tests, the effect of the blank holding force (BHF) on springback differed slightly from that for other metal sheets at low temperatures. At 200°C and above, negligible springback was observed over the range of BHF’s used. With increasing temperatures, springback decreased rapidly up to 200°C, and very slowly afterward. In nonisothermal tests, considerable springback was observed, even at temperatures of 200°C or higher; furthermore, it decreased almost linearly with increases in both the temperature and BHF.
収録刊行物
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- MATERIALS TRANSACTIONS
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MATERIALS TRANSACTIONS 49 (5), 1112-1119, 2008
公益社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390282679226055552
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- NII論文ID
- 10021146892
- 130004453992
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- NII書誌ID
- AA1151294X
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- ISSN
- 13475320
- 13459678
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- NDL書誌ID
- 9480808
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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