采用真空感应熔炼炉制备一种新型绿色中间合金Al-Mn-Ti-P-Cu,并添加金属Mg共同作用于过共晶Al-25Si合金,再对其进行适当热处理,最后检测实验效果,分析变质、强化、磨损机制.结果表明:该中间合金对组织中粗大的初、共晶硅及α(Al)均有明显细化作用；变质后,添加适量Mg可将Mg2Si强化相以相对细小形态引入基体,并最终在热处理后呈颗粒状均匀弥散分布基体中;随着组织的细化以及基体强度和硬度的提高,合金的磨损机制由磨粒磨损和粘着磨损的混合型磨损转化为单一的磨粒磨损,同时磨损质量损失降幅达46.6％,从而获得一种较理想的高强耐磨活塞材料.
参考文献
| [1] | LI Da-kui;ZUO Min;ZHANG Qian;LIU Xiang-fa .The investigation of continuous nucleation and refinement of primary Si in Al-30Si mushy zone[J].Journal of Alloys and Compounds,2010,502:304-309. |
| [2] | 汤顺意,周年润.铸造Al-Si合金变质处理的概况和发展趋势[J].浙江冶金,2007(02):1-5. |
| [3] | Feng Wang;Jishan Zhang;Baiqing Xiong .Effect of Fe and Mn additions on microstructure and mechanical properties of spray-deposited Al-20Si-3Cu-1 Mg alloy[J].Materials Characterization,2009(5):384-388. |
| [4] | DAI Hongshang,LIU Xiangfa.Effects of individual and combined additions of phosphorus, boron and cerium on primary and eutectic silicon in an Al-30Si alloy[J].稀有金属（英文版）,2009(06):651-655. |
| [5] | 王菲,蔡辉,王亚平.用高能球磨法制备的细晶Al-50Si合金的组织与性能[J].材料研究学报,2009(05):495-499. |
| [6] | 陈建,刘天佐,夏天东,赵文军,刘娜,李海军,张燕.铝硅合金低温加硅研究[J].有色金属（冶炼部分）,2009(03):45-49. |
| [7] | Mallapur, D. G.;Kori, SA;Udupa, KR .Influence of Ti, B and Sr on the microstructure and mechanical properties of A356 alloy[J].Journal of Materials Science,2011(6):1622-1627. |
| [8] | 丁万武,夏天东,赵文军,侯运丰.中间合金中第二相粒子TiC和TiAl3对纯铝的细化作用[J].中国有色金属学报,2009(06):1025-1031. |
| [9] | EASTON M A;ST JOHN D H A .Model of grain refinement incorporating alloy constitution and potency of heterogeneous nucleant particles[J].Acta Materialia,2001,49:1867-1878. |
| [10] | 许春香,梁丽萍,卢斌峰,薛永军,张金山,梁伟.铝硅合金晶粒细化剂Al-Ti-C-P的研制[J].铸造技术,2007(03):363-366. |
| [11] | SHAMSUZZOHA M;HOGAN L M;BERRY J T .Effects of modifying agents on crystallography and growth of silicon phase in Al-Si casting alloy[J].AFS Transactions,1993,101:999-1005. |
| [12] | MONDOLFO L F.铝合金组织与性能[M].北京:冶金工业出版社,1988:504-508. |
| [13] | 李新林;肖柳;李莉;王香 郑玉峰 马国睿 冯丹 .Mg-Zn-Sn系镁合金及变质其中汉字状共晶Mg2Si相的热处理工艺:[P].中国,CN 101161840,2007-11-19. |
| [14] | 陈冲 .过共晶Al-20wt.﹪Si合金的复合变质研究[D].郑州大学,2007. |
| [15] | 中国机械工程学会铸造专业学会.铸造手册[M].北京:机械工业出版社,2002:96-213,633-663. |
| [16] | Xu CL;Wang HY;Yang YF;Jiang QC .Effect of Al-P-Ti-TiC-Nd2O3 modifier on the microstructure and mechanical properties of hypereutectic Al-20 wt. %Si alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2007(0):341-346. |
| [17] | M. M. Haque;Nur I. Syahriah;Ahmad F. Ismail .Effect of Silicon on Strength and Fracture Surfaces of Aluminium-silicon Casting and Heat treated Alloys[J].Key engineering materials,2006(2):893-898. |
| [18] | Q.C. Jiang;C.L. Xu;M. Lu .Effect of new Al-P-Ti-TiC-Y modifier on primary silicon in hypereutectic Al-Si alloys[J].Materials Letters,2005(6):624-628. |
| [19] | 葛毅成,易茂中,涂欣达,冉丽萍,彭可,杨琳.结构类似的炭材料和C/C复合材料的滑动摩擦磨损行为[J].中国有色金属学报,2010(02):267-273. |
| [20] | 蔡泽高;刘以宽;王承忠;郑文龙.金属磨损与断裂[M].上海:上海交通大学出版社,1984:28-38. |
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