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快淬Al-5Ti-1B和Al-10Sr中间合金对ZL109合金的细化变质作用
发表时间：2011-05-15 浏览量：1586 下载量：686
| 全部作者： | 崔春翔，王学芹，刘双进，张彦杰，谷存帅，孙继兵 |
| 作者单位： | 河北工业大学材料科学与工程学院 |
| 摘 要： | 探讨了Al-5Ti-1B和Al-10Sr中间合金对ZL109合金的细化变质作用。通过对Al-5Ti-1B和Al-10Sr中间合金进行快速凝固处理，在冷却速度为105～106℃/s时，得到了薄丝带状细化剂。试验中，中间合金Al-5Ti-1B和Al-10Sr分别以薄带状和普通块状加入到ZL109合金中，对2种状态的中间合金变质效果进行了对比。试验结果表明：快淬Al-5Ti-1B和Al-10Sr的加入对ZL109合金的细化变质效果明显，显著提高了合金的硬度、耐磨性和拉伸性能；并且Al-10Sr作为变质剂加入到ZL109合金中能导致共晶硅的形态从粗大的片状（或称为针状）转变为细小的纤维状。 |
| 关 键 词： | 金属基复合材料；快速凝固；铝合金；孕育剂；力学性能 |
| Title： | Modifying effect of rapidly solidified Al-5Ti-1B and Al-10Sr master alloy on ZL109 alloy |
| Author： | CUI Chunxiang, WANG Xueqin, LIU Shuangjin, ZHANG Yanjie, GU Cunshuai, SUN Jibing |
| Organization： | School of Materials Science and Engineering, Hebei University of Technology |
| Abstract： | This paper deals with the modifying effect of rapidly solidified Al-5Ti-1B and Al-10Sr master alloy on ZL109 alloy. Al-5Ti-1B and Al-10Sr master alloys were fabricated out in rapid solidification process. While the cooling rate was about 105-106℃/s, the thin silk ribbon thinning inoculant was obtained. The Al-5Ti-1B and Al-10Sr master alloy, as the shape of thin ribbon and the general block-like were added into the ZL109 alloy, respectively, and the effects of alloy modification were compared with each other. The experimental results showed that the addition of nanometer Al-5Ti-1B and Al-10Sr could refine the microstructure of ZL109 alloy significantly, thus the hardness, wear resistance and tensile strength increasing obviously. The addition of Al-10Sr into ZL109 alloys as a modifier could result in the morphology transition of eutectic silicon from coarse plate-like or acicular to fine fibrous. |
| Key words： | metal matrix composites; rapid solidification; aluminium alloy; inoculant; mechanical properties |
| 发表期数： | 2011年5月第9期 |
| 引用格式： | 崔春翔，王学芹，刘双进，等. 快淬Al-5Ti-1B和Al-10Sr中间合金对ZL109合金的细化变质作用[J]. 中国科技论文在线精品论文，2011，4（9）：786-790. |
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