搅拌摩擦加工参数对5083铝合金组织性能的影响
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摘要
采用搅拌摩擦加工方法对不同焊接参数下的退火态5083铝合金的组织和性能进行研究.通过显微硬度实验研究了硬度在前进侧和后退侧以及加工区上下部分的分布规律;通过金相观察研究了加工区表面带状纹理和腐蚀后观察到的弧纹之间的关系.对母材和加工区用扫描电镜观察了析出相的形貌、尺寸及分布规律.结果表明:高硬度区宽度随着轴肩直径的增大而增大,随着转速和焊速之比(ω/ν)的增加而增大,硬度在前进侧(AS)和后退侧(RS)的分布是不均匀的;从母材到加工区硬度逐渐上升,RS侧的上升速度约为AS侧的一半.
Friction stir processing(FSP) method was used in 5083-Oaluminum alloy with different welding parameters. The micro-hardness testing was applied to determine the hardness distribution from advancing side(AS)to retreating side(RS) and from top to bottom in SZ. The optical microscope observation was applied to explore the relationship between banded textures of the as-welded surface and waves in SZ after etched. Scanning electron microscopy was used to observe the morphology,size and distribution of the base material and the processing zone.The results showed that width of the high hardness zone increases with increase of the shoulder diameter,and with increase of ω/ν. The micro-hardness distribution in AS side and RS side is non-uniform,the hardness from base martial(BM) to SZ increases gradually. The gradient of hardness in RS is about a half of AS.
Friction stir processing(FSP) method was used in 5083-Oaluminum alloy with different welding parameters. The micro-hardness testing was applied to determine the hardness distribution from advancing side(AS)to retreating side(RS) and from top to bottom in SZ. The optical microscope observation was applied to explore the relationship between banded textures of the as-welded surface and waves in SZ after etched. Scanning electron microscopy was used to observe the morphology,size and distribution of the base material and the processing zone.The results showed that width of the high hardness zone increases with increase of the shoulder diameter,and with increase of ω/ν. The micro-hardness distribution in AS side and RS side is non-uniform,the hardness from base martial(BM) to SZ increases gradually. The gradient of hardness in RS is about a half of AS.
引文
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[2]林三宝,赵衍华,吴林,等.搅拌摩擦焊的应用现状及发展前景[J].现代焊接,2004,01:64-65,68.(Lin Sanbao,Zhao Yanhua,Wu Lin,et al.Application status and development prospects of friction stir welding[J].Modern Welding Technology,2004,01:64-65,68.)
[3]张华,林三宝,吴林,等.搅拌摩擦焊研究进展及前景展望[J].焊接学报,2003,03:91-97.(Zhang Hua,Lin Sanbao,Wu Lin,et al.Development of friction stir processing[J].Hot Working Technology,2003,03:91-97.)
[4]黄春平,柯黎明,邢丽,等.搅拌摩擦加工研究进展及前景展望[J].稀有金属材料与工程,2011,01:183-188.(Huang Chunping,Ke Liming,Xing Li,et al.Friction stir welding research progress and prospects[J].Rare Metal Materials and Engineering,2011,01:183-188.)
[5]杨阳.5083铝合金高温变形行为及超塑性行为研究[D].长沙:中南大学,2007.(Yang Yang.High temperature deformation behavior and superplastic behavior research of 5083 aluminum alloy[D].Changsha:Central South University,2007.)
[6]刘洪,袁鸽成,黄泽涛,等.5083-H321铝合金板材搅拌摩擦焊缝组织演变[J].广东工业大学学报,2012,03:96-98,110.(Liu Hong,Yuan Gecheng,Huang Zetao,et al.The microstructural evolution of friction stir welded 5083-H321aluminum alloy plate[J].Journal of Guangdong University of Technology,2012,03:96-98,110.)
[7]康举,栾国红,付瑞东.7075-T6铝合金搅拌摩擦焊焊缝表面带状纹理的组织与性能[J].金属学报,2011,02:224-230.(Kang Ju,Luan Guohong,Fu Ruidong.Microstructures and mechanical properties of banded textures of friction stir welded7075-T6 alumunum alloy[J].Acta Metallurgica Sinica,2011,02:224-230.)
[8]李兵.6063铝合金薄板搅拌摩擦焊接工艺及机理的研究[D].沈阳:东北大学,2009.(Li Bing.Process and mechanism of friction stir welding on aluminum alloy sheet[D].Shenyang:Northeastern University,2009.)
[9]Tomotake Hirata,Taizo Oguri,Hideki Hagino,et al.Influence of friction stir welding parameters on grain size and formability in 5083 aluminum alloy[J].Materials Science&Engineering A,2007,456(1-2):344-349.
[10]Scialpi A,De Filippis L A C,Cavaliere P.Influence of shoulder geometry on microstructure and mechanical properties of friction stir welded 6082 aluminium alloy[J].Materials and D esign,2006,28(4):1124-1129.
[11]Rao D,Huber K,Heerens J,et al.Asymmetric mechanical properties and tensile behaviour prediction of aluminium alloy5083 friction stir welding joints[J].Materials Science&Engineering A,2012,565:44-50.