使用磷对过热重熔处理后的Al-20%Si合金熔液进行变质,然后与纯锌熔体混熔,制备了原位合成硅颗粒增强锌基复合材料,并对复合材料的显微组织和力学性能进行了分析.结果表明:重熔+磷变质处理的铝硅合金与纯锌熔体混熔后制备的原位Si_p/ZA27复合材料,比仅使用重熔+混熔制备的复合材料具有尺寸更加细小、分布更加均匀的硅颗粒,其室温抗拉强度和断后伸长率比后者也有较大提高.
The melt of Al-20%Si alloy was modified after remelting by P, and then mixed with pure zinc melt to fabricate in-situ silicon particles reinforced zinc matrix composites The microstructure and mechanical properties of the composites were studied. The results indicate that the size and distribution of silicon particles in the Si_p/ZA27 in-situ composites which fabricated by mixing the P modified and remelted Al-20wt%Si melt with pure zinc melt were finer than the composite fabiricated by remelting and melt mixing unmodified one. The elongation and tensile strength at room temperature of the composite were higher than the latter.
参考文献
| [1] | 郝远,陈体军,寇生中.SiCp含量及粒度对锌基复合材料高温摩擦磨损性能的影响[J].中国有色金属学报,1997(03):132-136. |
| [2] | 孟宪状,王杰芳,宋杨阳,刘忠侠,王明星,宋天福.不同变质剂对细晶铝锭共晶铝硅合金微观组织的影响[J].铸造技术,2008(05):650-654. |
| [3] | 王爱琴,谢敬佩,刘忠侠,王文焱.P+RE变质对过共晶Al-Si合金组织性能的影响[J].特种铸造及有色合金,2007(10):804-806. |
| [4] | 孟繁琴.稀土和磷复合变质对过共晶铝-硅合金硅晶体形貌与力学性能的影响[J].稀土,1998(02):61. |
| [5] | 张金山,许春香,韩富银.复合变质对过共晶高硅铝合金组织和性能的影响[J].中国有色金属学报,2002(z1):107-110. |
| [6] | 刘相法,乔进国,刘玉先,李士同,边秀房.Al-P中间合金对共晶和过共晶Al-Si合金的变质机制[J].金属学报,2004(05):471-476. |
| [7] | 张蓉,黄太文,刘林.过共晶Al-Si合金熔体中初生硅生长特性[J].中国有色金属学报,2004(02):262-266. |
| [8] | 陈体军,郝远,孙军,狄杰建.ZA27合金的微观组织[J].中国有色金属学报,2002(02):294-299. |
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