金属学报  2008, Vol. 44 Issue (4): 385-390

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Mg-Zn-Nd合金中的低Nd三元化合物T1相的研究

黄明丽;李洪晓;杨金艳;任玉平;丁 桦;郝士明

东北大学

Research on the ternary compound T1 with low Nd content in the Mg-Zn-Nd alloys

;

东北大学

黄明丽; 李洪晓; 杨金艳; 任玉平; 丁桦; 郝士明 . Mg-Zn-Nd合金中的低Nd三元化合物T1相的研究[J]. 金属学报, 2008, 44(4): 385-390 .
, , , , , . Research on the ternary compound T1 with low Nd content in the Mg-Zn-Nd alloys[J]. Acta Metall Sin, 2008, 44(4): 385-390 .

摘要 参考文献 相关文章 Metrics 全文: PDF(731 KB)   摘要: 利用扫描电镜、电子探针、X射线衍射仪和透射电镜对Mg-Zn-Nd系低Nd三元化合物T1相的成分、结构及其相平衡关系进行了研究. 结果表明, 在Mg-Zn-Nd系低Nd侧存在一个六方结构的三元化合物T1相, 其晶格常数为a=b=1.5 nm、 c=0.87 nm; 其成分(原子分数, %)范围为: Mg 27.0—33.4, Zn 60.2—66.4, Nd 6.1—7.4. 该化合物在300—400 ℃的温度区间与-Mg存在两相平衡. 在300, 350和400 ℃时分别存在T1+-Mg +MgZn, T1+MgZn+L及T1+Mg2Zn3+L三相区. 关键词 ： Mg-Zn-Nd合金,  三元化合物,  结构与成分     Abstract：The structure, composition range and phase equilibrium of the ternary compound T1 with low Nd content in the Mg-Zn-Nd alloys have been investigated by scanning electron microscopy, electron probe microanalysis, X-ray diffraction and electron diffraction. It has been shown that the ternary compound T1 with the hcp structure, whose structure parameters are a=b=1.5nm, c=0.87nm, exists in the Mg-Zn-Nd alloys with low Nd content. The composition range of the T1 phase is 27.0~33.4at%Mg, 60.0~66.4at%Zn and 6.1~7.4at%Nd. At the temperature range of 300~400℃, there exists (Mg)+T1 two-phase field; and the Zn content in the (Mg) which is in two- phase equilibrium with T1 increases with the temperature. Three-phase field T1+(Mg)+MgZn exists at 300℃, T1+MgZn+L exists at 350℃, and T1+Mg2Zn3+L exists at 400℃ in the Mg-Zn-Nd system. Key words： Mg-Zn-Nd system    ternary compound    structure and composition    phase equilibrium 收稿日期: 2007-10-10      ZTFLH:  TG111   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 黄明丽 李洪晓 杨金艳 任玉平 丁桦 郝士明 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y2008/V44/I4/385 [1]Wu A R,Xia C Q.Mater Des,2007;28:1963 [2]Nie J F,Muddle B C.Acta Mater,2000;48:1691 [3]Honma T,Ohkubo T,Hono K,Kamado S.Mater Sci Eng, 2005;A395:301 [4]Honma T,Ohkubo T,Kamado S,Hono K.Acta Mater, 2007;55:4137 [5]Meng F G,Wang J,Liu H S,Liu L B,,Jin Z P.Mater Sci Eng,2007;A454-455:266 [6]Appsa P J,Karimzadehb H,Kingb J F,Lorimer G W. Scr Mater,2003;48:1023 [7]Gao X,Nie J F.Scr Mater,2007;56:645 [8]Gao X,Nie J F.Scr Mater,2007;57:655 [9]Wei L Y,Dunlop G L,Westengen H.Metall Mater Trans, 1995;26:1947 [10]Jain C C,Bai C Y,Chen S W,Koo C H.Mater Trans, 2007;48:1149 [11]Li Q,Wang Q D,Wang Y X,Zeng X Q,Ding W J.J Alloys Compd,2007;427:115 [12]Villars P,Prince A,Okamoto H.Handbook,of Ternary Al- loy Phase Diagrams,CD-ROM,Metals Park,Ohio:ASM International,1997 [13]Sugiyama K,Yasuda K,Ohsuna T,Hiraga K.Z Kristal- lographie,1998;213:537 [14]Eckhard U,Stefan B,Wolf A,Gruner D,Kreiner G.J Cryst Growth,2005;275:1987 [15]Dobatkina T V,Muratova E V,Drozdova I I.Russ Metall (Engl Trans),1987;(1):205 [16]Drits M E,Drozdova E I,Korol'kova I G,Kinzhibalo V V,Tyvanchuk A T.Russ Metall(Engl Trans),1989;(2): 195 [17]Padezhnova E M,Mel'nik E V,Dobatkina T V.Izv Akad Nauk SSSR,Met,1979;(1):217 [1] 李洪晓 马倩倩 任玉平 蒋敏 秦高梧. Mg-Zn-Ca系富Mg区域三元化合物及其固态相平衡[J]. 金属学报, 2011, 47(4): 385-390. [2] 郝士明; 郝新江; 李艳霞; 任玉平; 李洪晓; 赵刚 . Al-Zn-Cu系中的T'化合物与低Cu侧室温相关系[J]. 金属学报, 2002, 38(7): 694-698 . Viewed Full text Abstract Cited   Shared      Discussed