搅拌摩擦加工对Mg-Zn-Y-Nd合金厚板组织与性能的影响
|
摘要
为了获得组织分布均匀且综合性能好的较大改性区,对Mg-Zn-Y-Nd合金厚板进行单面和双面搅拌摩擦加工,并对其组织和性能进行研究。结果表明:经搅拌摩擦加工后合金的微观组织均得到了显著细化,单面和双面搅拌摩擦加工后合金搅拌区的上部、中部和下部样品的平均晶粒尺寸依次分别为4.45μm、5.08μm、5.30μm和3.93μm、3.20μm、3.19μm;相比于均匀化退火态合金和单面搅拌摩擦加工态合金,双面搅拌摩擦加工态合金的组织分布更加均匀和细小,其下层搅拌区的抗拉强度和伸长率最高,分别为283.3 MPa和23.9%,且耐腐蚀性能最好,腐蚀方式由点蚀变为均匀腐蚀。
In order to obtain a large modified zone with uniform microstructure and good comprehensive properties, single-side and double-side friction stir processings of Mg-Zn-Y-Nd alloy thick plate were carried out, and the microstructure and properties of the processed plates were studied. The results show that the microstructure of the alloy is obviously refined after friction stir processing.The average grain sizes of the upper, mid and lower samples in the stirring zone after single-side and double-side friction stir processings are 4.45 μm, 5.08 μm,5.30 μm and 3.93 μm, 3.20 μm and 3.19 μm respectively. Compared with the homogenizing annealing alloy and single-side friction stir processed alloy, the microstructure of the double-side friction stir processed alloy is more uniform and fine, and the tensile strength and elongation of the lower stirring zone are the highest, 283.3 MPa and 23.9%respectively, and also the corrosion resistance is the best. The corrosion mode is changed from pitting corrosion to uniform corrosion.
In order to obtain a large modified zone with uniform microstructure and good comprehensive properties, single-side and double-side friction stir processings of Mg-Zn-Y-Nd alloy thick plate were carried out, and the microstructure and properties of the processed plates were studied. The results show that the microstructure of the alloy is obviously refined after friction stir processing.The average grain sizes of the upper, mid and lower samples in the stirring zone after single-side and double-side friction stir processings are 4.45 μm, 5.08 μm,5.30 μm and 3.93 μm, 3.20 μm and 3.19 μm respectively. Compared with the homogenizing annealing alloy and single-side friction stir processed alloy, the microstructure of the double-side friction stir processed alloy is more uniform and fine, and the tensile strength and elongation of the lower stirring zone are the highest, 283.3 MPa and 23.9%respectively, and also the corrosion resistance is the best. The corrosion mode is changed from pitting corrosion to uniform corrosion.
引文
[1]曾小勤,史枭颖.稀土镁合金强韧性设计与开发[J].航空材料学报,2017,37(1):18-25.(ZENG X Q,SHI X Y.Strengthening and toughening design and development of Mg-rare earth alloys[J].Journal of Aeronautical Materials,2017,37(1):18-25.)
[2]MISHRA R S,MAHONEY M W,MCFADDEN SX,et al.High strain rate super plasticity in a friction stir processed 7075 Al alloy[J].Scripta Materialia,1999,42(2):163-168.
[3]MISHRA R S,MA Z Y.Friction stir welding and processing[J].Materials Science&Engineering:R,2005,50(1/2):1-78.
[4]MA Z Y.Friction stir processing technology:areview[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,2008,39 A(3):642-658.
[5]YANG Q,XIAO B L,ZHANG Q,et al.Exceptional high-strain-rate super plasticity in Mg-Gd-Y-Zn-Zr alloy with long-period stacking ordered phase[J].Scripta Materialia,2013,69(11/12):801-804.
[6]DEL VALLE J A,REY P,GESTO D,et al.Mechanical properties of ultra-fine grained AZ91 magnesium alloy processed by friction stir processing[J].Materials Science and Engineering:A,2015,628:198-206.
[7]GARCIA BERANL M A,MISHRA R S,HERNAN-DEZ-SILVA D,et al.Microstructural homogeneity and hot deformation of various friction-stir-processed 5083 Al alloys[J].Journal of Materials Engineering and Performance,2017,26(1):460-464.
[8]林君,张大童,张文,等.前进速率对搅拌摩擦加工ZK60镁合金组织和力学性能的影响[J].航空材料学报,2017,37(1):52-58.(LIN J,ZHANG D T,ZHANG W,et al.Influence of processing speed on microstructure and mechanical properties of ZK60 magnesium alloy prepared by friction stir processing[J].Journal of Aeronautical Materials,2017,37(1):52-58.)
[9]吕勤云,沙桂英,王洪顺.AZ91镁合金搅拌摩擦加工后的组织与性能[J].航空材料学报,2008,28(4):27-30.(LüQ Y,SHA G Y,WANG H S.Microstructure and properties of friction stir-processed AZ91 magnesium alloy[J].Journal of Aeronautical Materials,2008,28(4):27-30.)
[10]鲁志龙,张大童,张文,等.不同冷却介质下多道次搅拌摩擦加工对AZ91镁合金组织和性能影响[J].航空材料学报,2016,36(1):33-38.(LU Z L,ZHANG D T,ZHANG W,et al.Microstructure and properties of AZ91 magnesium alloy prepared by multi-pass friction stir processing under different cooling conditions[J].Journal of Aeronautical Materials,,2016,36(1):33-38.)
[11]XUE P,XIAO B L,MA Z Y.Enhanced strength and ductility of friction stir processed Cu-Al alloys with abundant twin boundaries[J].Scripta Materialia,2013,68(9):751-754.
[12]CHAI F,ZHANG D,LI Y,et al.High strain rate superplasticity of a fine-grained AZ91 magnesium alloy prepared by submerged friction stir processing[J].Materials Science and Engineering:A,2013,568:40-48.
[13]YADAV D,BAURI R.Effect of friction stir processing on microstructure and mechanical properties of aluminium[J].Materials Science and Engineering:A,2012,539:85-92.
[14]WANG Y,HUANG Y,MENG X,et al.Microstructural evolution and mechanical properties of Mg-Zn-Y-Zr alloy during friction stir processing[J].Journal of Alloys and Compounds,2017,696:875-883.
[15]ZHU S J,WANG L G,JIN J,et al.Microstructures and properties of biological Mg-Zn-Y-Nd alloy by friction stir processing[J].Materials Science Forum,2013,745/746:33-38.
[16]刘峰超,马宗义.搅拌摩擦加工对铸态7075铝合金显微组织的影响[J].金属学报,2008,44(3):319-324.(LIU F C,MA Z Y.Effect of friction stir processing on the microstructure of as-cast 7075 aluminum alloy[J].Acta Metalurgica Sinica,2008,44(3):319-324.)
[17]刘守法,周兆锋,李春风.热输入对AZ31镁合金FSP试样力学性能的影响[J].航空材料学报,2015,35(1):39-44.(LIU S F,ZHOU Z F,LI C F.Effects of heat input on mechanical properties of AZ31 Mg alloy fabricated by FSP[J].Journal of Aeronautical Materials,2015,35(1):39-44.)
[18]HAN J Y,CHEN J,PENG L M,et al.Influence of processing parameters on thermal field in Mg-Nd-Zn-Zr alloy during friction stir processing[J].Materials&Design,2016,94(3):186-194.
[19]马宗义,商乔,倪丁瑞,等.镁合金搅拌摩擦焊接的研究现状与展望[J].金属学报,2018,54(11):1591-1617.(MA Z Y,SHANG Q,NI D R,et al.Friction stir welding of magnesium alloys:a review[J].Acta Metalurgica Sinica,2018,54(11):1591-1617.)
[20]CABIBBO M,FORCELLESE A,El MHTEDI M,et al.Double side friction stir welding of AA6082 sheets:microstructure and nanoindentation characterization[J].Materials Science and Engineering:A,2014,590:209-217.
[21]CHEN J,FUJII H,SUN Y,et al.Fine grained Mg-3Al-1Zn alloy with randomized texture in the doublesided friction stir welded joints[J].Materials Science and Engineering:A,2013,580:83-91.
[22]孙跃.金属腐蚀与控制[M].哈尔滨:哈尔滨工业大学出版社,2003:96-97
[23]SONG M,KOVACEVIC R.Thermal modeling of friction stir welding in a moving coordinate system and its validation[J].International Journal of Machine Tools&Manufacture,2003,43(6):605-615.
[2]MISHRA R S,MAHONEY M W,MCFADDEN SX,et al.High strain rate super plasticity in a friction stir processed 7075 Al alloy[J].Scripta Materialia,1999,42(2):163-168.
[3]MISHRA R S,MA Z Y.Friction stir welding and processing[J].Materials Science&Engineering:R,2005,50(1/2):1-78.
[4]MA Z Y.Friction stir processing technology:areview[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,2008,39 A(3):642-658.
[5]YANG Q,XIAO B L,ZHANG Q,et al.Exceptional high-strain-rate super plasticity in Mg-Gd-Y-Zn-Zr alloy with long-period stacking ordered phase[J].Scripta Materialia,2013,69(11/12):801-804.
[6]DEL VALLE J A,REY P,GESTO D,et al.Mechanical properties of ultra-fine grained AZ91 magnesium alloy processed by friction stir processing[J].Materials Science and Engineering:A,2015,628:198-206.
[7]GARCIA BERANL M A,MISHRA R S,HERNAN-DEZ-SILVA D,et al.Microstructural homogeneity and hot deformation of various friction-stir-processed 5083 Al alloys[J].Journal of Materials Engineering and Performance,2017,26(1):460-464.
[8]林君,张大童,张文,等.前进速率对搅拌摩擦加工ZK60镁合金组织和力学性能的影响[J].航空材料学报,2017,37(1):52-58.(LIN J,ZHANG D T,ZHANG W,et al.Influence of processing speed on microstructure and mechanical properties of ZK60 magnesium alloy prepared by friction stir processing[J].Journal of Aeronautical Materials,2017,37(1):52-58.)
[9]吕勤云,沙桂英,王洪顺.AZ91镁合金搅拌摩擦加工后的组织与性能[J].航空材料学报,2008,28(4):27-30.(LüQ Y,SHA G Y,WANG H S.Microstructure and properties of friction stir-processed AZ91 magnesium alloy[J].Journal of Aeronautical Materials,2008,28(4):27-30.)
[10]鲁志龙,张大童,张文,等.不同冷却介质下多道次搅拌摩擦加工对AZ91镁合金组织和性能影响[J].航空材料学报,2016,36(1):33-38.(LU Z L,ZHANG D T,ZHANG W,et al.Microstructure and properties of AZ91 magnesium alloy prepared by multi-pass friction stir processing under different cooling conditions[J].Journal of Aeronautical Materials,,2016,36(1):33-38.)
[11]XUE P,XIAO B L,MA Z Y.Enhanced strength and ductility of friction stir processed Cu-Al alloys with abundant twin boundaries[J].Scripta Materialia,2013,68(9):751-754.
[12]CHAI F,ZHANG D,LI Y,et al.High strain rate superplasticity of a fine-grained AZ91 magnesium alloy prepared by submerged friction stir processing[J].Materials Science and Engineering:A,2013,568:40-48.
[13]YADAV D,BAURI R.Effect of friction stir processing on microstructure and mechanical properties of aluminium[J].Materials Science and Engineering:A,2012,539:85-92.
[14]WANG Y,HUANG Y,MENG X,et al.Microstructural evolution and mechanical properties of Mg-Zn-Y-Zr alloy during friction stir processing[J].Journal of Alloys and Compounds,2017,696:875-883.
[15]ZHU S J,WANG L G,JIN J,et al.Microstructures and properties of biological Mg-Zn-Y-Nd alloy by friction stir processing[J].Materials Science Forum,2013,745/746:33-38.
[16]刘峰超,马宗义.搅拌摩擦加工对铸态7075铝合金显微组织的影响[J].金属学报,2008,44(3):319-324.(LIU F C,MA Z Y.Effect of friction stir processing on the microstructure of as-cast 7075 aluminum alloy[J].Acta Metalurgica Sinica,2008,44(3):319-324.)
[17]刘守法,周兆锋,李春风.热输入对AZ31镁合金FSP试样力学性能的影响[J].航空材料学报,2015,35(1):39-44.(LIU S F,ZHOU Z F,LI C F.Effects of heat input on mechanical properties of AZ31 Mg alloy fabricated by FSP[J].Journal of Aeronautical Materials,2015,35(1):39-44.)
[18]HAN J Y,CHEN J,PENG L M,et al.Influence of processing parameters on thermal field in Mg-Nd-Zn-Zr alloy during friction stir processing[J].Materials&Design,2016,94(3):186-194.
[19]马宗义,商乔,倪丁瑞,等.镁合金搅拌摩擦焊接的研究现状与展望[J].金属学报,2018,54(11):1591-1617.(MA Z Y,SHANG Q,NI D R,et al.Friction stir welding of magnesium alloys:a review[J].Acta Metalurgica Sinica,2018,54(11):1591-1617.)
[20]CABIBBO M,FORCELLESE A,El MHTEDI M,et al.Double side friction stir welding of AA6082 sheets:microstructure and nanoindentation characterization[J].Materials Science and Engineering:A,2014,590:209-217.
[21]CHEN J,FUJII H,SUN Y,et al.Fine grained Mg-3Al-1Zn alloy with randomized texture in the doublesided friction stir welded joints[J].Materials Science and Engineering:A,2013,580:83-91.
[22]孙跃.金属腐蚀与控制[M].哈尔滨:哈尔滨工业大学出版社,2003:96-97
[23]SONG M,KOVACEVIC R.Thermal modeling of friction stir welding in a moving coordinate system and its validation[J].International Journal of Machine Tools&Manufacture,2003,43(6):605-615.