焦琰珂,熊毅,姚怀,任凤章

• 1:河南科技大学材料科学与工程学院
• 2:河南省有色金属共性技术协同创新中心

摘要(Abstract)：

通过光学显微镜(OM)、扫描电镜(SEM)、透射电镜(TEM)和万能材料试验机等研究了固溶处理对Mg-2.0Zn-0.4Mn-xAl合金微观组织和性能的影响，借助质量损失实验和电化学实验研究了合金在3.5%NaCl溶液中的耐腐蚀性能。结果表明：合金中第二相的数量及尺寸随着Al含量的增加而增加，第二相组成由纳米级棒状MgZn_2相和椭圆状Mg_2(Zn, Al)_(11)相(0～4 mass%Al)向Mg_(17)Al_(12)相(6 mass%Al)转变。当Al含量为4.0 mass%时，合金具有较好的综合力学性能和耐蚀性能，其极限抗拉强度、屈服强度及伸长率分别为(180.1±3.1) MPa、(124.7±2.8) MPa和(16.7±1.5)%,在3.5%NaCl溶液中浸泡72 h后，合金的静态腐蚀速率和析氢腐蚀速率分别为(0.822±0.056) mm/y和(0.790±0.045) mm/y。

关键词(KeyWords)： 镁合金;固溶处理;微观组织;力学性能;耐腐蚀性

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(U1804146);; 河南省高等学校重点科研项目(20A430010);; 上海大件热制造工程研究中心资助项目(18DZ2253400)

作者(Author): 焦琰珂,熊毅,姚怀,任凤章

DOI: 10.13289/j.issn.1009-6264.2023-0048

参考文献(References)：

• [1] Joost W J,Krajewski P E.Towards magnesium alloys for high-volume automotive applications[J].Scripta Materialia,2017,128:107-112.
• [2] Chen J X,Tan L L,Yu X M,et al.Mechanical properties of magnesium alloys for medical application:A review[J].Journal of the Mechanical Behavior of Biomedical Materials,2018,87:68-79.
• [3] Yang X Y,Xu S,Liu L S.The shock response and spall mechanism of Mg-Al-Zn alloy:Molecular dynamics study[J].Acta Mechanica Solida Sinica,2022,35(3):495-503.
• [4] Guo R,Zhang C S,Liu M F,et al.Influence of isothermal and non-isothermal aging treatments on microstructure and properties of Al-Zn-Mg alloy helical profile[J].Materials Characterization,2020,169(19):110613.
• [5] Yuan Y,Ma A,Gou X,et al.Effect of heat treatment and deformation temperature on the mechanical properties of ECAP processed ZK60 magnesium alloy[J].Materials Science and Engineering A,2016,677:125-132.
• [6] 刘阳力，张金玲，刘军，等.固溶时间对AZG315镁合金显微组织演变的影响及其作用机制[J].材料热处理学报，2016,37(6):49-54.LIU Yang-li,ZHANG Jin-ling,LIU Jun,et al.Effect and mechanism of solution time on microstructure evolution of AZG315 magnesium alloy[J].Transactions of Materials and Heat Treatment,2016,37(6):49-54.
• [7] Yao H,Wen J B,Xiong Y,et al.Microstructures,mechanical properties and corrosion behavior of as-cast Mg-2.0Zn-0.5Zr-xGd (wt%) biodegradable alloys[J].Materials,2018,11(9):1564.
• [8] Peng L,Chen G,Zhao Y T,et al.Influence of solution treatment on microstructure and properties of in-situ Mg2Si/AZ91D composites[J].Transactions of Nonferrous Metals Society of China,2011,21(11):2365-2371.
• [9] Jia H,Feng X,Yang Y.Influence of solution treatment on microstructure,mechanical and corrosion properties of Mg-4Zn alloy[J].Journal of Magnesium and Alloys,2015,3(3):247-252.
• [10] 苏再军，姜辉，肖宏超.均匀化处理对Mg-Nd-Zn-Y-Zr合金组织及力学性能的影响[J].中国稀土学报，2020,188(6):61-67.SU Zai-jun,JIANG Hui,XIAO Hong-chao.Effects of homogenizing treatment on microstructures and mechanical properties of Mg-Nd-Zn-Y-Zr alloy[J].Journal of the Chinese Society of Rare Earths,2020,188(6):61-67.
• [11] 王玉琴，张会.固溶处理对Mg-8Al-1Zn-1Si合金组织与性能的影响[J].铸造技术，2016,37(10):2085-2088.WANG Yu-qin,ZHANG Hui.Effect of solution treatment on microstructure and mechanical properties of Mg-8Al-1Zn-1Si alloy[J].Foundry Technology,2016,37(10):2085-2088.
• [12] 姚磊，谢灵，王亚东，等.固溶处理对Mg-3Zn-xZr合金力学性能及耐腐蚀性的影响[J].有色金属工程，2016,6(5):18-22.YAO Lei,XIE Ling,WANG Ya-dong,et al.Effects of solution treatment on mechanical properties and corrosion resistance of Mg-3Zn-xZr alloy[J].Nonferrous Metals Engineering,2016,6(5):18-22.
• [13] 陈籽佚，李全安，陈晓亚，等.Al对Mg-12Gd-3Y-1Sm合金显微组织和耐蚀性的影响[J].材料热处理学报，2021,42(4):35-42.CHEN Zi-yi,LI Quan-an,CHEN Xiao-ya,et al.Effect of Al on microstructure and corrosion resistance of Mg-12Gd-3Y-1Sm alloy[J].Transactions of Materials and Heat Treatment,2021,42(4):35-42.
• [14] 焦琰珂，熊毅，姚怀.Al含量对Mg-2.0Zn-0.4Mn合金组织、力学性能及耐腐蚀性能的影响[J].材料热处理学报，2022,43(10):10-18.JIAO Yan-ke,XIONG Yi,YAO Huai.Effect of Al content on microstructure,mechanical properties and corrosion resistance of Mg-2.0Zn-0.4Mn alloy[J].Transactions of Materials and Heat Treatment,2022,43(10):10-18.
• [15] Liu S J,Yang G Y,Luo S F,et al.Microstructure and mechanical properties of sand mold cast Mg-4.58Zn-2.6Gd-0.18Zr magnesium alloy after different heat treatments[J].Journal of Alloys & Compounds,2015,644:846-853.
• [16] Kabir H,Munir K,Wen C,et al.Recent research and progress of biodegradable zinc alloys and composites for biomedical applications:Biomechanical and biocorrosion perspectives[J].Bioactive Materials,2021,6(3):836-879.
• [17] Shi Z,Liu M,Atrens A.Measurement of the corrosion rate of magnesium alloys using Tafel extrapolation[J].Corrosion Science,2010,52(2):579-588.
• [18] 石德珂.材料科学基础[M].第二版.北京：机械工业出版社，2003:275-305.
• [19] 宋佩维.往复挤压Mg-Al-Si合金的组织、性能及强化机制[D].西安：西安理工大学，2007.SONG Pei-wei.Microstructure,properties and strengthening mechanism of reciprocating extrusion Mg-Al-Si alloy[D].Xi’an:Xi’an University of Technology,2007.
• [20] Peng L,Chen G,Zhao Y T,et al.Influence of solution treatment on microstructure and properties of in-situ Mg2Si/AZ91D composites[J].Transactions of Nonferrous Metals Society of China,2011,21(11):2365-2371.
• [21] Aung N N,Wei Z.Effect of grain size and twins on corrosion behaviour of AZ31B magnesium alloy[J].Corrosion Science,2010,52(2):589-594.
• [22] Abidin N,Atrens A D,Martin D,et al.Corrosion of high purity Mg,Mg2Zn0.2Mn,ZE41 and AZ91 in Hank’s solution at 37 ℃[J].Corrosion Science,2011,53(11):3542-3556.
• [23] Fata A,Faraji G,Mashhadi M M,et al.Hot deformation behavior of Mg-Zn-Al alloy tube processed by severe plastic deformation[J].Archives of Metallurgy and Materials,2017,62(1):159-166.
• [24] Liu L,Chen X,Pan F,et al.Effect of Y and Ce additions on microstructure and mechanical properties of Mg-Zn-Zr alloys[J].Materials Science and Engineering A,2015,644:247-253.
• [25] Liu Y,Liu Z L,Liu W D,et al.Study of solid solution strengthening of alloying element with phase structure factors[J].Progress in Natural Science,2003,13(1):69-73.
• [26] Watanabe H,Tsutsui H,Mukai T,et al.Grain size control of commercial wrought Mg-Al-Zn alloys utilizing dynamic recrystallization[J].Materials Transactions,2001,42(7):1200-1205.
• [27] Ma G R,Li X L,Xiao L,et al.Effect of holding temperature on microstructure of an AS91 alloy during semisolid isothermal heat treatment[J].Journal of Alloys & Compounds,2010,496(1-2):577-581.
• [28] Fata A,Faraji G,Mashhadi M M,et al.Hot tensile deformation and fracture behavior of ultrafine-grained AZ31 magnesium alloy processed by severe plastic deformation[J].Materials Science and Engineering A,2016,674:9-17.
• [29] Gusieva K,Davies C H J,Scully J R,et al.Corrosion of magnesium alloys:the role of alloying[J].International Materials Reviews,2015,60(3):169-194.

文章评论(Comment)：