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材料研究学报  2003, Vol. 17 Issue (6): 637-642    
  论文 本期目录 | 过刊浏览 |
喷射成形7075+TiC铝合金的半固态组织研究
刘慧敏1;2; 杨 滨1; 张济山1
1.北京科技大学新金属材料国家重点实验室; 2.内蒙古工业大学
引用本文:

刘慧敏 ; 杨; 滨; 张济山 . 喷射成形7075+TiC铝合金的半固态组织研究[J]. 材料研究学报, 2003, 17(6): 637-642.

全文: PDF(632 KB)  
摘要: 制备具有不同原位TiC颗粒含量的喷射成形7075铝合金,在610℃和620℃二次加热并保温30 min,淬火固定其半固态组织后采用扫描电镜进行观察.利用平均截线法统计其平均晶粒尺寸,分析不同颗粒含量对喷射成形7075铝合金半固态组织的影响规律. 结果表明,当原位TiC颗粒含量达到2.91%(体积分数, 下同)时已经产生良好的钉扎效果,使得合金基本保持喷射成形组织特征, 能够满足后续的半固态成形工艺要求.与7075铝合金相比, 抗拉强度提高4.2\%. TiC颗粒的含量减少至1.73%和1.15%时,局部区域发生晶粒的异常长大现象, 使合金组织的均匀化程度下降.
关键词 金属材料7075铝合金喷射成形半固态     
Key words
收稿日期: 1900-01-01     
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