主轴转向对再生Al-Si-Fe-Mg合金多道次搅拌摩擦加工区组织和性能的影响
Effect of Spindle Rotation Direction on Microstructure and Properties of Multi-pass Friction Stir Processing Zone of Al-Si-Fe-Mg Recycled Alloy
摘 要
对4.5 mm厚的再生Al-7.0Si-0.85Fe-0.30Mg合金板进行相同主轴转向1~3道次和改变第2道次主轴转向2，3道次的搅拌摩擦加工，研究了主轴转向对搅拌摩擦加工区组织和力学性能的影响。结果表明：随着加工道次的增加，加工区的面积以及前进侧热机影响区的宽度增大，加工核心区的富铁相、共晶硅等第二相颗粒长度减小，圆整度提高，强度和硬度无显著改变，断后伸长率显著提高。改变第2道次主轴转向后加工区面积较相同主轴转向时减小，但组织对称性提高，前进侧热机影响区宽度减小；改变主轴转向后，第二相颗粒尺寸变化不明显，但圆整度显著降低，强度和硬度的变化也不明显，断后伸长率略有提高。
再生Al-Fe-Si-Mg合金
主轴转向
富铁相
拉伸性能
friction stir processing
Al-Fe-Si-Mg recycled alloy
spindle rotation direction
Fe-rich phase
tensile property
Abstract
The 4.5 mm thick Al-7.0Si-0.85Fe-0.30Mg recycled alloy plate was processed by friction stir for 1-3 passes with the same spindle rotation direction and for 2,3 passes by changing the second pass spindle rotation direction. The effect of spindle rotation direction on microstructure and mechanical properties of friction stir processing zone was studied. The results show that with increasing processing pass, the area of the processing zone and the width of the thermo-mechanical affected zone on the advancing side increased; the length of the second phase particles such as Fe-rich phase and eutectic silicon in the processing core area decreased, and the roundness increased; the strength and hardness had no significant change, and the percentage elongation after fracture significantly increased. After changing the second pass spindle rotation direction, the area of processing zone decreased compared with that with the same spindle rotation direction, but the microstructure symmetry was improved; the width of the thermo-mechanical affected zone on the advancing side decreased. After changing the spindle rotation direction, the second phase particle size did not change significantly, but the roundness decreased significantly; the strength and hardness did not change obviously, but the percentage elongation after fracture increased slightly.
中图分类号 TG146 DOI 10.11973/jxgccl202309006
所属栏目 试验研究
基金项目 湖南省自然科学基金资助项目（2020JJ7073）；湖南省教育厅科研项目（20C1888）
收稿日期 2022/8/4
修改稿日期 2023/8/14
网络出版日期
作者单位点击查看
备注龚航(1982-),男,湖南张家界人,副教授,硕士
引用该论文: GONG Hang,LIU Hougen,CHEN Li,SONG Bin. Effect of Spindle Rotation Direction on Microstructure and Properties of Multi-pass Friction Stir Processing Zone of Al-Si-Fe-Mg Recycled Alloy[J]. Materials for mechancial engineering, 2023, 47(9): 33～40
龚航,刘厚根,陈立,宋斌. 主轴转向对再生Al-Si-Fe-Mg合金多道次搅拌摩擦加工区组织和性能的影响[J]. 机械工程材料, 2023, 47(9): 33～40
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参考文献
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【2】DING N, GAO F, WANG Z H, et al.Environment impact analysis of primary aluminum and recycled aluminum[J].Procedia Engineering, 2012, 27:465-474.
【3】姜玉敬.我国再生铝行业发展存在的问题及发展趋势[J].世界有色金属, 2017(8):72-73. JIANG Y J.Problems and development trend of the development of recycled aluminum industry in China[J].World Nonferrous Metals, 2017(8):72-73.
【4】LI Z D, LIMODIN N, TANDJAOUI A, et al.Influence of Fe content on the damage mechanism in A319 aluminum alloy:Tensile tests and digital image correlation[J].Engineering Fracture Mechanics, 2017, 183:94-108.
【5】BACAICOA I, LUETJE M, WICKE M, et al.3D morphology of Al5FeSi inclusions in high Fe-content Al-Si-Cu alloys[J].Procedia Structural Integrity, 2016, 2:2269-2276.
【6】MOUSTAFA M A.Effect of iron content on the formation of β-Al5FeSi and porosity in Al-Si eutectic alloys[J].Journal of Materials Processing Technology, 2009, 209(1):605-610.
【7】DINNIS C M, TAYLOR J A, DAHLE A K.Interactions between iron, manganese, and the Al-Si eutectic in hypoeutectic Al-Si alloys[J].Metallurgical and Materials Transactions A, 2006, 37(11):3283-3291.
【8】HWANG J Y, DOTY H W, KAUFMAN M J.The effects of Mn additions on the microstructure and mechanical properties of Al-Si-Cu casting alloys[J].Materials Science and Engineering:A, 2008, 488(1/2):496-504.
【9】WU X Y, ZHANG H R, ZHANG F X, et al.Effect of cooling rate and Co content on the formation of Fe-rich intermetallics in hypoeutectic Al7Si0.3Mg alloy with 0.5%Fe[J].Materials Characterization, 2018, 139:116-124.
【10】CHANYATHUNYAROJ K, PATAKHAM U, KOU S, et al.Microstructural evolution of iron-rich intermetallic compounds in scandium modified Al-7Si-0.3Mg alloys[J].Journal of Alloys and Compounds, 2017, 692:865-875.
【11】LIN C, WU S S, ZHONG G, et al.Effect of ultrasonic vibration on Fe-containing intermetallic compounds of hypereutectic Al-Si alloys with high Fe content[J].Transactions of Nonferrous Metals Society of China, 2013, 23(5):1245-1252.
【12】SEIFEDDINE S, JOHANSSON S, SVENSSON I L.The influence of cooling rate and manganese content on the β-Al5FeSi phase formation and mechanical properties of Al-Si-based alloys[J].Materials Science and Engineering:A, 2008, 490(1/2):385-390.
【13】SONG D F, WANG S C, ZHAO Y L, et al.Effect of melt holding on morphological evolution and sedimentation behavior of iron-rich intermetallic phases in Al-Si-Fe-Mn-Mg alloy[J].Transactions of Nonferrous Metals Society of China, 2020, 30(1):1-13.
【14】任淑荣, 马宗义, 陈礼清.搅拌摩擦焊接及其加工研究现状与展望[J].材料导报, 2007, 21(1):86-92. REN S R, MA Z Y, CHEN L Q.Research status and prospect of friction stir welding and friction stir processing[J].Materials Review, 2007, 21(1):86-92.
【15】王快社, 林兆霞, 周龙海, 等.搅拌摩擦加工铸态铝铁合金的显微组织[J].中国有色金属学报, 2012, 22(5):1270-1275. WANG K S, LIN Z X, ZHOU L H, et al.Microstructure of friction stir processed as-cast Al-Fe alloy[J].The Chinese Journal of Nonferrous Metals, 2012, 22(5):1270-1275.
【16】MA Z Y, SHARMA S R, MISHRA R S.Effect of multiple-pass friction stir processing on microstructure and tensile properties of a cast aluminum-silicon alloy[J].Scripta Materialia, 2006, 54(9):1623-1626.
【17】宋斌, 龚航, 钱锦文, 等.搅拌摩擦加工道次及主轴转向对再生铝合金组织和性能的影响[J].塑性工程学报, 2020, 27(7):182-189. SONG B, GONG H, QIAN J W, et al.Effects of friction stir processing passes and spindle rotation direction on microstructure and properties of recycled aluminum alloy[J].Journal of Plasticity Engineering, 2020, 27(7):182-189.
【18】陈涛, 李青, 龚航, 等.搅拌摩擦加工对Al-Si-Fe合金组织和性能的影响[J].材料科学与工艺, 2020, 28(1):74-80. CHEN T, LI Q, GONG H, et al.Effect of friction stir processing on microstructure and properties of Al-Si-Fe alloy[J].Materials Science and Technology, 2020, 28(1):74-80.
【19】陈涛, 宋东福, 陈胜迁, 等.Al-Si-Fe铸造铝合金的搅拌摩擦加工组织和性能研究[J].稀有金属, 2019, 43(12):1275-1282. CHEN T, SONG D F, CHEN S Q, et al.Microstructure and properties of Al-Fe-Si alloy under friction stir processing[J].Chinese Journal of Rare Metals, 2019, 43(12):1275-1282.
【20】MA Z Y.Friction stir processing technology:A review[J].Metallurgical and Materials Transactions A, 2008, 39(3):642-658.
【21】高吉成, 宋子豪, 周浪, 等.搅拌摩擦加工道次对PI/7075铝基复合材料显微组织和耐磨性能的影响[J].机械工程材料, 2019, 43(11):27-31. GAO J C, SONG Z H, ZHOU L, et al.Effect of friction stir processing pass on microstructure and wear resistance of PI/7075 aluminum-base composite[J].Materials for Mechanical Engineering, 2019, 43(11):27-31.
【22】MOUSTAFA E, MOHAMMED S, ABDEL-WANIS S, et al.Review multi pass friction stir processing[J].American Scientific Research Journal for Engineering, Technology, and Sciences (ASRJETS), 2016, 22(1):98-108.
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