原位生成TiC粒子在快凝Al-Fe合金中变化行为的研究

材料科学与工程学报, 2004, 22(1): 1-4. doi: 10.3969/j.issn.1673-2812.2004.01.001

原位生成TiC粒子在快凝Al-Fe合金中变化行为的研究

孙玉峰 ^1, , 郭建 ^2, , 沈宁福 ^3, , 王育人 ^4,

1.中科院力学研究所国家微重力室,北京,100080

2.郑州大学工学院材料研究中心,河南,郑州,450002

3.郑州大学工学院材料研究中心,河南,郑州,450002

4.中科院力学研究所国家微重力室,北京,100080

关键词：原位反应 , 显微组织 , 快速凝固

Study of the Behavior of in-situ TiC in Rapidly Solidified Al-Fe Alloys

通过OM,SEM和TEM等手段研究了在常规铸态以及快速凝固Al-8wt%Fe合金中原位生成TiC粒子时相组成及显微组织的变化.同时结合利用外加法制备的常规铸态和快速凝固Al-8wt%Fe/TiC合金的显微组织变化,得出了原位反应TiC粒子的生成及其在合金熔体中的变化行为:在常规铸态下生成的尺寸较大的八面体TiC颗粒在快速凝固过程中将发生全部或部分溶解,在随后的快冷过程中将重新析出并形成细小的TiC粒子,原位生成的TiC粒子在快速凝固过程中同样可以对α-Al起到促发形核的作用.

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材料期刊网

原位生成TiC粒子在快凝Al-Fe合金中变化行为的研究

Study of the Behavior of in-situ TiC in Rapidly Solidified Al-Fe Alloys

参考文献