Affiliation:
1. University of Science and Technology Liaoning
Abstract
Strip casting process is a kind of promising near net shape technology for producing magnesium alloys strip. The microstructure and mechanical properties of CO2 laser welded as-cast AZ31 magnesium alloy sheet were investigated. The microstructure of base material (BS) was typical columnar dendritic structure. A significant grain refinement occurred in the fusion zone (FZ) due to the rapid cooling, while an obvious grain coarsening occurred in the heat affected zone (HAZ). The tensile strength and elongation at fracture of weld joints were reduced due to the weld depression caused by high heat input. The hardness in the FZ was the highest due to fine grains, while there was a decrease in hardness of the HAZ, but little variation compared with the hardness of the BS.
Publisher
Trans Tech Publications, Ltd.
Reference11 articles.
1. M.M. Avedesian, H. Baker: ASM Specially Handbook: Magnesium and Magnesium Alloy (ASM International, USA 1999).
2. X. Hu: Studies on Strip Casting and Rolling of Magnesium Alloy Thin Strip (Ph.D., Saitama Institute of Technology, Japan 2007).
3. T. Mino, M. Asakawa and D. Lee, et al: Journal of Materials Processing Technology, Vol. 177 (2006), p.534.
4. P. Ding, F. Pan and B. Jiang, et al: Trans. Nonferrous Met. Soc. China, Vol. 18 (2008), p. s7.
5. W.J. Kim and B.H. Lee: Journal of Alloys and Compounds, Vol. 482 (2009), p.106.
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献