金属学报  2006, Vol. 42 Issue (5): 487-491

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Mg-Al-M合金中Al-M相(M=Sr, Nd)析出行为的热力学分析

吴玉锋;杜文博;聂祚仁;苏学宽;左铁镛

北京工业大学材料科学与工程学院

Thermodynamic Analysis Of The Precipitation Behavior Of Nd And Sr In The Mg-Al Based Alloys

Yufeng Wu;;

北京工业大学材料学院

吴玉锋; 杜文博; 聂祚仁; 苏学宽; 左铁镛 . Mg-Al-M合金中Al-M相(M=Sr, Nd)析出行为的热力学分析[J]. 金属学报, 2006, 42(5): 487-491 .
, , , , . Thermodynamic Analysis Of The Precipitation Behavior Of Nd And Sr In The Mg-Al Based Alloys[J]. Acta Metall Sin, 2006, 42(5): 487-491 .

摘要 参考文献 相关文章 Metrics 全文: PDF(734 KB)   摘要: 以Al-M (M=Sr, Nd)二元相图、Miedema生成热模型和Toop模型为基础, 建立了Mg-Al-M三元合金熔体中Al--$M$金属间化合物析出行为的热力学计算模型, 并采用该模型对Mg-8Al-3.5Sr熔体中Al-Sr金属间化合物的析出温度进行了计算, 结果与文献基本吻合.利用该模型对一定温度下Mg-9/6Al-M (M= Sr,Nd)熔体中优先析出Al-M金属间化合物所需M的最低含量进行了计算. 根据计算结果, 对Al-M金属间化合物在Mg-9/6Al-M合金熔体中的析出行为以及对合金力学性能可能的影响进行了分析和比较, 提出了采用稀土Nd和碱土Sr复合添加来制备耐热镁合金的思路. 关键词 ： Miedema生成热模型,  Toop模型,  Al11Nd3     Abstract：The heat resistance of Mg alloys can be improved by adding rare earth and alkaline earth elements into Mg-Al alloys. Based on the binary phase diagrams of Al-Sr and Al-Nd、Miedema model and Toop model, the thermodynamic calculation model for predicting the precipitation behavior of the Al-Sr and Al-Nd intermetallic compounds in a ternary alloy system was deduced. The temperature of precipitating Al-Sr intermetalic compound in the Mg-8Al-3.5Sr ternary system was calculated by using this model. The calculated results are in good agreement with the references, indicating this calculated model is feasible. The lowest content of X (X=Nd、Sr), making the Al-X intermetallic compounds precipitate prior to α-Mg in the Mg-9Al-X and Mg-6Al-X (X=Nd、Sr), was calculated based on this model. According to the calculated results, the precipitation behaviors of the Al2Sr and Al11Nd3 intermetallic compounds were analyzed and the effects of these compounds to the properties of Mg alloys were discussed. A new method to prepare the heat resistance of Mg alloys by adding Nd and Sr was proposed. Key words： Miedema model    Toop model    Al11Nd3    Al2Sr 收稿日期: 2005-08-18      ZTFLH:  TG146.2   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 吴玉锋 杜文博 聂祚仁 苏学宽 左铁镛 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y2006/V42/I5/487 [1] Lu Y Z, Wang Q D, Zeng X Q, Ding W J, Zhai C Q, Zhu Y P. Mater Sci Eng, 2000; A278: 66 [2] Baril E, Labelle P, Pekguleryuz M O. JOM, 2003; 55(11): A34 [3] Huang X F, Fu P H, Lu C, Ding W J. Chin J Mater Res, 2004; 18: 593 (黄晓锋,付彭怀,卢晨,丁文江．材料研究学报,2004;18: 593) [4] Chartrand P, Pelton A D. J Phase Equilib, 1994; 15: 590 [5] Parvezl M A, Wang X, Essadiqi E, Medraj M. In: Neelameggham N R, Kaplan H I, Powell B R, eds., Magnesium Technology 2005. Warrendale, USA, PA: TMS, 2005: 179 [6] Miedema A R, de Boer P F, de Chatel P F. Physica, 1980; 100B: 1 [7] Dragan M, Dragana Z, Zivan Z. J Serb Chem Soc, 2005; 70: 9 [8] Sheng J W, Yamana H, Moriyama H. Royal Soc Chem, 2001; 14: 1 [9] Chen X Q, Ding X Y, Liu X, Zheng H Y, Rogl P. J Northeast Univ (Nat Sci), 2000; 21: 270 (陈星秋,丁学勇,刘新,郑海燕,Rogl P．东北大学学报(自 然科学版),2000;21:270) [10] Fan P, Zhou G Z. Acta Metall Sin, 1999; 35: 421 (范鹏,周国治．金属学报,1999;35:421) [11] Massalski T B, Murray J L, Bennett L H. Binary Alloy Phase Diagrams. Cleveland, Ohio: American Society for Metals Press, 1986: 140 [12] Powell B R, Rezhets V M, Balogh M P, Waldo R A. JOM, 2002; 54(8): 34 [13] Anyanwu I A, Gokan Y, Nozawa S, Suzuki A, Kamado S, Kojima Y, Takeda S, Ishida T. Mater Trans, 2003; 44: 562 [1] 刘力恒,车淳山,孔纲,卢锦堂,张双红. 热镀Zn-0.2%Al镀层中Fe-Al抑制层失稳机理及其热力学评估*[J]. 金属学报, 2016, 52(5): 614-624. Viewed Full text Abstract Cited   Shared      Discussed