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材料研究学报  2007, Vol. 21 Issue (2): 151-154    
  论文 本期目录 | 过刊浏览 |
ZL201合金的半固态成形组织和力学性能
王平  尹翔  崔建忠  路贵民
引用本文:

王平; 尹翔; 崔建忠; 路贵民 . ZL201合金的半固态成形组织和力学性能[J]. 材料研究学报, 2007, 21(2): 151-154.

全文: PDF(598 KB)  
摘要: 制备ZL201合金半固态坯料、将其二次加热、触变模锻成形以及成形件热处理,研究了工艺条件对成形件的组织和力学性能的影响.结果表明:采用近液相线半连续铸造技术制备的ZL201合金半固态坯料微观组织为大量细小的等轴晶和少量短程枝晶;在适当的工艺条件(在640℃保温5 min,模具温度250~300℃,留模时间10~15 s)下可触变成形出表面光洁的ZL201合金成形件;经过T5处理后,ZL201合金的抗拉强度达到278 MPa,延伸率达到9%,大大高于压铸成形件的性能,其强化相为CuAl2和TiAl3.由于成形速度高,溶体高速充型,造成成形件气孔率高,使ZL201合金半固态压铸成形的组织致密度不如半固态模锻成形件,这是半固态压铸件强度低、模锻件强度高的主要原因.
Key words
收稿日期: 1900-01-01     
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