金属学报  2008, Vol. 44 Issue (8): 911-916

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Er对Al-Mg-Mn-Zn-Sc-Zr-(Ti)填充合金凝固组织与力学性能的影响

杨福宝;刘恩克;徐骏;石力开

北京有色金属研究总院国家有色金属复合材料工程技术研究中心

EFFECTS OF Er ON THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF AS-CAST Al-Mg-Mn-Zn-Sc-Zr-(Ti) FILLER METALS

Yang Fu-Bao;;;

北京有色金属研究总院

杨福宝; 刘恩克; 徐骏; 石力开 . Er对Al-Mg-Mn-Zn-Sc-Zr-(Ti)填充合金凝固组织与力学性能的影响[J]. 金属学报, 2008, 44(8): 911-916 .
, , , . EFFECTS OF Er ON THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF AS-CAST Al-Mg-Mn-Zn-Sc-Zr-(Ti) FILLER METALS[J]. Acta Metall Sin, 2008, 44(8): 911-916 .

摘要 参考文献 相关文章 Metrics 全文: PDF(1926 KB)   摘要: 通过OM, SEM和XRD等分析方法与拉伸实验研究了Sc, Zr, Er和Ti复合微合金化焊 丝合金的凝固组织及铸态力学性能, 在实现合金组织有效细化的基础上, 重点研 究了Er及Er与Ti共存对合金晶界组织及合金力学性能的影响. 结果表明, 对于Sc 和Zr复合细化的Al-Mg焊 丝合金, Er元素的存在加强了合金的细晶强化效应, 合 金的强度与塑性均得到提高, 并在合金晶 界处富集不连续分布的Al3Er共晶 相; 当Er和Ti共存于合金中时, 5-10 um的方块状(Al, Mg)20Ti2Er 金属间化合物相存在于晶界, 该相的生成会使合金的强度进一步提高, 但塑性有所 降低; (Al, Mg)20Ti2Er相和Al3Er相共存时, 两相对晶界连续性的 破坏会完全抵消Er的细化效应 对合金塑性的提高, 合金拉伸断口由混合型断裂(穿晶 断裂和沿晶断裂)转变为沿晶断裂. 关键词 ： Al-Mg合金,  填充合金,  Er添加     Abstract：The microstructure and mechanical properties of Al-Mg-Mn-Zn filler alloys microalloyed by Scandium (Sc), Zirconium (Zr) , Erbium (Er) and Titanium (Ti) were investigated with OM, SEM, SEM and tensile tests. On the basis of the effective grain refinement, the influences of Er element and coexistence of Er and Ti elements on grain boundary morphologies and phase distribution in grain boundaries, as well as their effects on the mechanical properties of experimental alloys, have been emphatically researched. The results indicate that, for the refined Al-Mg alloys by Sc+Zr, adding minor Er element can enhance the grain refinement of alloys, thus improve both the strength and ductility, and ultimately produce Al3Er phase discontinuously distributing in the grain boundaries. The combinational addition of Er and Ti elements can led to the precipitation of (Al,Mg)20Ti2Er intermetallic compound particles with 5~10μm in size and square shape, which distribute in grain boundaries and give some contribution to the improvements in both tensile strength(UTS) and yield strength(0.2YS), but lower the ductility. Coexisting of (Al,Mg)20Ti2Er and Al3Er phases breaks the grain boundary succession, consequently offsets the improvement on the ductility caused by Er grain-refining, and results in the transition of tensile fractographic patterns from the mixed-fracture (intergranular and transcrystalline fractures) to the intergranular fracture. Key words： Al-Mg alloy    microstructure    mechanical property    interface destabilization    transcrystalline fracture    i 收稿日期: 2008-01-14      ZTFLH:  TG425   服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 杨福宝 刘恩克 徐骏 石力开 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y2008/V44/I8/911 [1]Chinese Welding Society.Welding Handbook.Vol.2,Bei- jing:China Machine Press,2001:522 (中国机械工程学会焊接学会．焊接手册．第2卷，北京：机械工业出版社，2001：522) [2]Wang Y L,Qu J S,Yan C P,Hu J F.J Chin Nonferrous Met,1997;7(1):69 (王元良，屈金山，晏传鹏，胡久富．中国有色金属学报，1997；7(1)：69) [3]Yin Z M,Guo F Y,Li Z.Alum Fabr,2000;23(4):51 (尹志民，郭飞跃，李周．铝加工，2000；23(4)：51) [4]David S A,Vitek J M.Int Mater Rev,1989;34:213 [5]Gao M X,Yu H H.Hot Work Technol,2000;(3):13 (高明霞，余红华．热加工工艺，2000；(3)：13) [6]Kou S,Le Y.Metall Trans,1985;16A:1887 [7]Reddy G M,Gokhale A A,Rao K P.J Mater Sci,1997; 32:4117 [8]Ram G D J,Mitra T K,Shankar V,Sundaresan S.J Mater Process Technol,2003;142:174 [9]Norman A F,Birley S S,Prangnell P B.Sci Technol Weld Join,2003;8:235 [10]Guo X M,Yang C G,Qian B N,Xu Q,Zhang H Y.Acta Metall Sin,2005;41:397 (国旭明，杨成刚，钱百年，徐强，张洪延．金属学报，2005；41：397) [11]Xu G F,Nie Z R,Jin T N,Yang J J,Fu J B,Yin Z M.J Chin Rare Earth Soc,2002;20:143 (徐国富，聂祚仁，金头男，杨军军，付静波，尹志民．中国稀土学报，2002；20：143) [12]Yu S E,Wang W,Yang J J,Zou J X,Nie Z R.J Chin Rare Earth Soc,2006;24:470 (余胜文，王为，杨军军，邹景霞，聂祚仁．中国稀土学报，2006；24：470) [13]Xing Z B,Nie Z R,Zou J X,Gao X D.J Chin Rare Earth Soc,2007;25:234 (邢泽炳，聂祚仁，邹景霞，高旭东．中国稀土学报，2007；25：234) [14]Liu E K,Yang F B,Xu J,Shi L K.Trans Nonferrous Met Soc China,2007;17(S1):308 [15]Martinez R A,Karma A,Flemings M C.Metall Mater Trans,2006;37A:2807 [16]Raghavan V.J Phase Equilib Diffus,2005;26:180 [17]Ning Y T,Zhou X M,Dai H.Acta Metall Sin,1992;28: B95 (宁远涛，周新铭，戴红．金属学报，1992；28：B95) [18]Norman A F,Prangnell P B,McEwen R S.Acta Mater, 1998;46:5715 [19]Li P J,Kandalova E G,Nikitinb V I,Makarenkob A G, Lutsb A R,Zhang Y F.Scr Mater,2003;49:699 [20]Nihei T,Suzuki H G,Kato M,Ma J S.Mater Trans,2004; 45:75 [21]Arsenault R J,Fishman S,Taya M.Prog Mater Sci,1994; 38:1 [22]Chu Y Y,He X L,Ke J.Chin J Mater Res,1988;(4):18 (褚幼义，贺信莱，柯俊．材料科学进展，1988；(4)：18) [23]Lathabai S,Lloyd P G.Acta Mater,2002;50:4275 [1] 接金川, 邹鹑鸣, 王宏伟, 魏尊杰. Al-20Mg合金高压凝固力学性能研究*[J]. 金属学报, 2014, 50(8): 971-978. [2] 董明慧 韩培德 张彩丽 杨艳青 张莉莉 李洪飞. Al-Mg合金中层错和孪晶形变能的第一性原理研究[J]. 金属学报, 2011, 47(5): 573-577. Viewed Full text Abstract Cited   Shared      Discussed