| Al_(72)Ni_(12)Co_(16)单相准晶合金的凝固特性研究 |
| |
| 引用本文： | 程素玲,杨根仓,朱满,王锦程,刘峰,周尧和. Al_(72)Ni_(12)Co_(16)单相准晶合金的凝固特性研究[J]. 铸造, 2009, 58(12) |
| |
| 作者姓名： | 程素玲 杨根仓 朱满 王锦程 刘峰 周尧和 |
| |
| 作者单位： | 西北工业大学凝固技术国家重点实验室,陕西西安,710072 |
| |
| 基金项目： | 国家自然科学基金，航空科学基金 |
| |
| 摘 要： | 利用普通浇注方法和SEM、XRD、DTA、TEM等分析手段,研究了Al_(72)Ni_(12)Co_(16)准晶合金的结构旋转对称特征、微观组织与凝固特性.研究结果表明,在普通铸造条件下,Al_(72)Ni_(12)Co_(16)合金为单相多孔组织.合金在凝固过程中,准晶直接从液相中析出,该合金的液相线温度与包晶反应温度相隔很近,说明该准晶为近一致熔融化合物.
|
| 关 键 词： | Al-Ni-Co十次准晶 凝固 气孔 准晶体生长 |
Solidification Character of Al_(72)Ni_(12)Co_(16) Single-Decagonal Quasicrystal Alloy |
| |
| CHENG Su-ling,YANG Gen-cang,ZHU Man,WANG Jin-cheng,LIU Feng,ZHOU Yao-he. Solidification Character of Al_(72)Ni_(12)Co_(16) Single-Decagonal Quasicrystal Alloy[J]. China Foundry, 2009, 58(12) |
| |
| Authors: | CHENG Su-ling YANG Gen-cang ZHU Man WANG Jin-cheng LIU Feng ZHOU Yao-he |
| |
| Abstract: | The rotation symmetry, microstructure and solidification character of Al_(72)Ni_(12)Co_(16) quasicrystal alloy were studied by the conventional casting method and SEM, XRD, DTA and TEM analysis. The results indicate that under the conventional casting condition, the Al_(72)Ni_(12)Co_(16) alloy exhibits a single and porosity microstructure. During the solidification, the quasicrystal phase precipitates directly from the liquid. The Al_(72)Ni_(12)Co_(16) decagonal quasicrystal phase is a nearly congruent compound where the liquidus and peritectic-reaction lines are very close. |
| |
| Keywords: | Al-Ni-Co decagonal quasicrystal solidification porosity quasicrystal growth |
| 本文献已被 万方数据 等数据库收录！ |
|
