陈霞,张丁非,邓天宇,赵阳,冯靖凯,蒋斌,潘复生

• 1:重庆大学材料科学与工程学院
• 2:重庆大学国家镁合金材料工程技术研究中心
• 3:重庆市科学技术研究院

摘要(Abstract)：

采用光学显微镜(OM),扫描电镜(SEM),X射线衍射仪(XRD)等分析方法研究了添加Ca和Sn对Mg-6Zn-1Mn(ZM61)合金显微组织和力学性能的影响。结果表明:ZM61合金中主要的第二相为Mg_7Zn_3,添加0.5 mass%Ca后合金中出现Ca_2Mg_6Zn_3相,Mg_7Zn_3相减少,动态再结晶不完全,织构增强,强度和塑性提高;在ZM61-0.5Ca合金中添加1 mass%Sn,合金中出现针状新相CaMgSn,该相抑制Ca_2Mg_6Zn_3的形成。ZM61-0.5Ca-1Sn合金综合力学性能最佳,屈服强度、抗拉强度和伸长率分别为319 MPa,358 MPa和13.5%。

关键词(KeyWords)： ZM61合金;Ca;Sn;显微组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划项目(2016YFB0301101);; 国家自然科学基金面上项目(51571040);国家自然科学基金重点项目(U1764253;51531002)

作者(Author): 陈霞,张丁非,邓天宇,赵阳,冯靖凯,蒋斌,潘复生

DOI: 10.13289/j.issn.1009-6264.2019-0272

参考文献(References)：

• [1] 张帅,李全安,朱宏喜,等.Ca对铸态Mg-11Gd-3Y-0.5Zr合金显微组织和性能的影响[J].材料热处理学报,2019,40(5):37-42.ZHANG Shuai,LI Quan-an,ZHU Hong-xi,et al.Effect of Ca on microstructure and properties of as-cast Mg-11Gd-3Y-0.5Zr alloy[J].Transactions of Materials and Heat Treatment,2019,40(5):37-42.
• [2] You S H,Huang Y D,Kainer K U,et al.Recent research and developments on wrought magnesium alloys[J].Journal of Magnesium and Alloys,2017(5):239-253.
• [3] Pan H C,Ren Y P,Fu H,et al.Recent developments in rare-earth free wrought magnesium alloys having high strength:A review[J].Journal of Alloys & Compounds,2016,663:321-331.
• [4] 张丁非,赵霞兵,石国梁,等.挤压和热处理对ZM61镁合金组织和性能的影响[J].中国有色金属学报,2012,22(1):53-61.ZHANG Ding-fei,ZHAO Xia-bing,SHI Guo-liang,et al.Influence of extrusion and heat treatment on microstructure and mechanical properties of ZM61 magnesium alloys[J].The Chinese Journal of Nonferrous Metals,2012,22(1):53-61.
• [5] Zhang D F,Shi G L ,Zhao X B,et al.Microstructure evolution and mechanical properties of Mg-x%Zn-1%Mn (x=4,5,6,7,8,9) wrought magnesium alloys[J].Transactions of Nonferrous Metals Society of China,2011,21(1):15-25.
• [6] Ali Y,Qiu D,Jiang B,et al.Current research progress in grain refinement of cast magnesium alloys:A review article[J].Journal of Alloys and Compounds,2015,619:639-651.
• [7] 张红菊.稀土Nd、Y对Mg-6Zn-1Mn镁合金微合金化效应的研究[D].重庆:重庆大学,2015.ZHANG Hong-ju.Microalloying effects of rare element of Nd,Y on the Mg-6Zn-1Mn magnesium alloy[D].Chongqing:Chongqing University,2015.
• [8] 齐福刚.Sn和Ce对Mg-Zn-Mn高强变形镁合金组织和性能的影响[D].重庆:重庆大学,2012.QI Fu-gang.Effect of Sn and Ce on microstructure and properties of Mg-Zn-Mn high strength wrought alloy[D].Chongqing:Chongqing University,2012.
• [9] Wang B,Chen X H,Pan F S,et al.Effects of Sn addition on microstructure and mechanical properties of Mg-Zn-Al alloys[J].Progress in Natural Science,2017,27(6):695-702.
• [10] Wei S H,Zhu T P,Hodgson M,et al.Effects of Sn addition on the microstructure and mechanical properties of as-cast,rolled and annealed Mg-4Zn alloys[J].Materials Science & Engineering A,2013,585:139-148.
• [11] Qi F G,Zhang D F,Zhang X H,et al.Effect of Sn addition on the microstructure and mechanical properties of Mg-6Zn-1Mn (mass%) alloy[J].Journal of Alloys and Compounds,2014,585:656-666.
• [12] Zeng Y,Jiang B,Huang D H,et al.Effect of Ca addition on grain refinement of Mg-9Li-1Al alloy[J].Journal of Magnesium and Alloys,2013,(5):297-302.
• [13] StJohn D H,Easton M A,Qian M,et al.Grain refinement of magnesium alloys:a review of recent research,theoretical developments,and their application[J].Metall.Mater.Trans.A,2012,44(7) 2935-2949.
• [14] Hirai K,Somekawa H,Takigawa Y,et al.Effects of Ca and Sr addition on mechanical properties of a cast AZ91 magnesium alloy at room and elevated temperature[J].Materials Science & Engineering A,2005,403(1/2):276-280.
• [15] Lu X,Zhao G Q,Zhou J X,et al.Microstructure and mechanical properties of the as-cast and as-homogenized Mg-Zn-Sn-Mn-Ca alloy fabricated by semicontinuous casting[J].Materials,2018,11(5):257-269.
• [16] Zhang Y,Song L P,Chen X Y,et al.Effect of Zn and Ca addition on microstructure and strength at room temperature of as-cast and as-extruded Mg-Sn alloys[J].Materials,2018,11(9):1490.
• [17] Pan H C,Qin G W,Ren Y P,et al.Achieving high strength in indirectly-extruded binary Mg-Ca alloy containing Guinier-Preston zones[J].Journal of Alloys and Compounds,2015,630:272-276.
• [18] Du Y Z,Qiao,X G,Zheng M Y,et al.Effect of microalloying with Ca on the microstructure and mechanical properties of Mg-6 mass%Zn alloys[J].Materials and Design,2016,285-293.
• [19] Yang M B,Cheng L,Pan F S.Effects of calcium addition on as-cast microstructure and mechanical properties of Mg-5Zn-5Sn alloy[J].Transactions of Nonferrous Metals Society of China,2010,20(5):769-775.
• [20] Humphreys F J.The nucleation of recrystallization at second phase particles in deformed aluminium[J].Acta Metallurgica,1977,25(11):1323-1344.
• [21] Xing L,Guo Q Z,Ji X Z,et al.Effect of extrusion speeds on the microstructure,texture and mechanical properties of high-speed extrudable Mg-Zn-Sn-Mn Ca alloy[J].Vacuum,2018,157:180-191.
• [22] Yuan W,Panigrahi S K,Su J Q,et al.Influence of grain size and texture on Hall-Petch relationship for a magnesium alloy[J].Scripta Materialia,2011,65(11):994-997.

文章评论(Comment)：