Structure and Mechanical Properties of Al-1%Si Bar Material Prepared by Electromagnetic Continuous Casting
摘 要
采用电磁连铸和普通连铸技术制备了Al-1%Si合金棒材,对其微观组织及力学性能进行了分析.结果表明:电磁连铸技术得到的合金晶粒细小,且硅的分布比较均匀;其硬度比普通连铸得到的合金提高6%,抗拉强度提高7.2%,伸长率提高21.2%;其断口表面韧窝比较深,韧性好,且有大量滑移线存在.
Abstract
The electromagnetic continuous casting(EMCC) and direct chill continuous casting (DCC) methods were used to make Al-1%Si alloy,respectively.The crystal structure and mechanical properties were analyzed.Compared with DCC,EMCC ingots have more fine size of grain and the element Si distributed uniformly;the hardness,tensile strength and elongation are increased by about 6%,7.2% and 21.2% respectively;the dimple of fracture face is deeper;the toughness is higher;and there are numerous slip lines.
中图分类号 TG249.7
所属栏目
基金项目 国家自然科学基金资助项目(50274018)
收稿日期 2006/7/17
修改稿日期 2006/9/20
网络出版日期
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备注张婷(1981-),女,河南洛阳人,硕士研究生.
引用该论文: ZHANG Ting,CAO Zhi-qiang,YANG Miao,LIU Hong-cai. Structure and Mechanical Properties of Al-1%Si Bar Material Prepared by Electromagnetic Continuous Casting[J]. Materials for mechancial engineering, 2007, 31(5): 41~44
张婷,曹志强,杨淼,刘红才. 电磁连铸Al-1%Si棒材的组织和力学性能[J]. 机械工程材料, 2007, 31(5): 41~44
被引情况:
【1】张红亮,曹志强,刘吉东,阎志明,李廷举,王家淳, "软接触电磁连铸铝制结晶器的改进",机械工程材料 35, 46-49(2011)
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参考文献
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【3】张亦杰,江盛玲,马乃恒,等.Fe、Si对工业纯铝晶粒细化的影响[J].热加工工艺,2006,35(1):25-27.
【4】Backerud J.The relative importance of nucleation and growth mechanisms to control grain size in various aluminum alloys[J].Light Metals,1996,27(4):679-685.
【5】Ohno A.Continuous casting of single crystal ingots by the O.C.C process[J].Journal of Metals,1986,38:14-16.
【6】陈亚军,王自东,陈琦,等.Al-Si合金挤压棒材再结晶组织演变[J].北京科技大学大学学报,2004,26(3):297-300.
【7】李玉梅,张兴国,贾非,等.铝合金电磁连铸技术的基础研究[J].铸造技术,2002,23(2):111-114.
【8】房灿峰,贾非,金俊泽,等.铝合金的软接触电磁连铸研究[J].铸造,2004,53(5):350-353.
【9】Jia Fei,Jin Jun-zei,Zhang Xing-guo,et al.Effect of middle frequency electromagnetic field on surface quality of continuous casting aluminum alloy ingot[J].Journal of Dalian University of Technology,2003,43(3):305-310.
【10】张兴国,曲若家,何文庆,等.电磁连铸系统磁场的数值模拟及试验研究[J].特种铸造及有色合金,2004(6):34-36.
【11】贾非.电磁连续铸造过程工艺优化及组织性能研究[D].大连:大连理工大学,2002.
【12】曹志强,贾 非,张兴国,等.电磁铸造铝合金锭的力学性能[J].材料研究学报,2002,16(6):635-639.
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