研究了不同变质元素(0.2％ Sr、0.5％ La和0.5％ Nd)对Al-18％ Mg2Si合金凝固组织及性能的影响.探讨了变质元素对Mg2Si形核的影响机理.结果表明:0.2％ Sr和0.5％Nd对Mg2Si相的变质效果最佳,力学性能明显提升.基于经典凝固形核理论,建立了变质元素吸附形核模型,该模型解释了变质元素吸附毒化作用呈现峰值的特点,并可用于计算该峰值处变质元素的最优覆盖率.
参考文献
| [1] | High Damping Properties Of Mg-si Binary Hypoeutectic Alloys[J].Materials Letters,2009(3/4):391-393. |
| [2] | 李慎兰,黄志其,蒋福利,陈维平,刘志铭,戚文军.固溶温度对6061铝合金组织和性能的影响[J].材料热处理学报,2013(05):131-136. |
| [3] | 张保丰,王利国,关绍康,陈小伟.添加硅钙合金对AM60镁合金耐腐蚀性能的影响[J].材料热处理学报,2012(11):24-27. |
| [4] | 贾树卓,徐春杰,郭学锋,郑水云,张忠明,吕涛.热处理对原位自生Mg2Si/Mg-Al基复合材料组织与性能的影响[J].材料热处理学报,2006(06):25-28. |
| [5] | 艾秀兰,李英民.稀土元素对Al-Mg2Si合金组织及性能的影响[J].铸造,2005(03):238-240,245. |
| [6] | M.E. Moussa;M.A Waly;A.M. El-Sheikh.Effect of high-intensity ultrasonic treatment on modification of primary Mg_2Si in the hypereutectic Mg-Si alloys[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2013:693-700. |
| [7] | R. Alizadeh;R. Mahmudi .Effects of Sb addition on the modification of Mg_2Si particles and high-temperature mechanical properties of cast Mg-4Zn-2Si alloy[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2011(37):9195-9199. |
| [8] | R. Hadian;M. Emamy;N. Varahram .The effect of Li on the tensile properties of cast Al-Mg_2Si metal matrix composite[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2008(1/2):250-257. |
| [9] | Nur Azmah Nordin;Saeed Farahany;Ali Ourdjini.Refinement of Mg_2Si reinforcement in a commercial Al-20%Mg_2Si in-situ composite with bismuth, antimony and strontium[J].Materials Characterization,2013:97-107. |
| [10] | Zhang J;Fan Z;Wang Y et al.Microstrnctural refinement in Al-Mg2Si in-situcomposites[J].Materials Science Letters,1999,18(10):783-784. |
| [11] | Q.D. Qin;Y.G. Zhao;W. Zhou .Effect of phosphorus on microstructure and growth manner of primary Mg_2Si crystal in Mg2Si/Al composite[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2007(1/2):186-191. |
| [12] | Q.D. Qin;Y.G. Zhao;C. Liu .Strontium modification and formation of cubic primary Mg_2Si crystals in Mg_2Si/Al composite[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2008(1/2):142-146. |
| [13] | Jiang QC;Wang HY;Wang Y;Ma BX;Wang JG .Modification of Mg2Si in Mg-Si alloys with yttrium[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2005(1/2):130-135. |
| [14] | 陈晓 .原位自生颗粒增强镁基复合材料的研究[D].中南大学,2005. |
| [15] | 马宝霞,王丽萍,郭二军.镧对Mg-Si合金中Mg2Si相变质的影响[J].中国稀土学报,2008(01):87-91. |
| [16] | 任玉艳 .原位Mg2Si/Al复合材料强韧化及其机理的研究[D].沈阳:沈阳工业大学,2012. |
| [17] | Xiao-Feng Wu,Guan-Gan Zhang,Fu-Fa Wu.Microstructure and dry sliding wear behavior of cast Al-Mg2Si in-situ metal matrix composite modified by Nd[J].稀有金属（英文版）,2013(03):284-289. |
| [18] | Hartman P.Crystal Growth[M].Amsterdam:North-Holland Publishing Co,1973 |
| [19] | Z. L. Wang .Transmission Electron Microscopy of Shape-Controlled Nanocrystals and Their Assemblies[J].The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical,2000(6):1153-1175. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%