레이저 용접조건에 따른 AZ31 마그네슘합금 맞대기 용접부의 특성
Characteristics of Butt Welded AZ31 Magnesium Alloy with Laser Welding Conditions
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초록
Magnesium alloys have many advantages such as a low density, high strength/weight ratio and well recycle. And joining process is absolutely necessary to expand the field of application of magnesium alloy. The main problems of conventional process such as arc welding for magnesium alloy are the inflammability, a tendency toward crack formation and the appearance of porosity during solidification. Laser welding technology is a promising means for overcoming these difficulties. This study is related to the laser weldability of AZ31 magnesium alloy, an all-purpose wrought alloy with good strength and ductility. The effect of welding conditions on the weldability of butt joints was examined. Also, the mechanical properties of butt welded joints were investigated by tensile test and hardness test.
Abstract
Magnesium alloys have many advantages such as a low density, high strength/weight ratio and well recycle. And joining process is absolutely necessary to expand the field of application of magnesium alloy. The main problems of conventional process such as arc welding for magnesium alloy are the inflammability, a tendency toward crack formation and the appearance of porosity during solidification. Laser welding technology is a promising means for overcoming these difficulties. This study is related to the laser weldability of AZ31 magnesium alloy, an all-purpose wrought alloy with good strength and ductility. The effect of welding conditions on the weldability of butt joints was examined. Also, the mechanical properties of butt welded joints were investigated by tensile test and hardness test.
참고문헌 (11)
- B.H Yoon, "Welding technology of magnesium alloy for automobile industry", RIST硏究論文, 18(1), pp.7~15 (2004)
- E. Schubert, "Light-weight structures produced by laser beam joining for future applications in automobile and aerospace industry", Journal of Materials Processing Technology, 115(1), pp.2~8 (2001)
- T. Asahina, "Solidification crack sensitivity of TIG welded AZ31 magnesium alloy", Journal of Japan Institute of Light Metals, 49(12), pp.595~599 (1999)
- A. Munitz, "Mechanical properties and microstructure of gas tungsten arc welded magnesium AZ91D plates", Materials Science and Engineering: A, 302(1), pp.68~73 (2001)
- T. Zhu, "Incipient melting in partially melted zone during arc welding of AZ91D magnesium", Materials Science and Engineering: A, 416(1-2), pp.246~252 (2006)
- J. A. ESPARZA, "Friction-stir welding of magnesium alloy AZ31B", JOURNAL OF MATERIALS SCIENCE LETTERS, 21(12), pp.917~920 (2002)
- Friction stir spot welding of Mg-alloys for automotive applications, "A. Gerlich", Magnesium technology, 383~388 (2005)
- 이목영, "마그네슘 합금의 최신 동향 및 레이저 용접 특성", 대한용접접합학회지, 25(5), pp.29~35 (2007), 대한용접접합학회
- 김종도, "AZ31 마그네슘합금의 레이저 용접성에 미치는 공정변수의 영향", 한국마린엔지니어링학회지, 32(4), pp.570~577 (2008), 한국마린엔지니어링학회
- ASM specialty handbook, magnesium and magnesium alloys, "M.M. Avedesian", ~ (1999)
- マグネシウム加工技術, "日本塑性加工學會", ~ (2004)