锑变质对铝合金组织及性能的影响

发布时间：2018-04-30 21:05

  本文选题：Al-Si合金 + Sb变质处理　； 参考：《热加工工艺》2015年23期

【摘要】：为了提高铝合金性能,通过向基体Al-6%Si合金中添加Sb变质剂进行变质处理,研究了Sb变质剂对Al-Si铝合金组织性能的影响。结果表明:在Al-6%Si合金中加入Sb变质剂后,可以使粗大的共晶Si由针片状变成细小均匀分布的短条状或粒状,使α-Al枝晶分布均匀,合金的硬度及韧性得到提高。其最佳变质工艺为:变质温度为740℃,变质时间为10 min,变质剂的加入量为0.2%。对于变质温度、变质时间、变质剂的添加量来说,变质剂的添加量是影响变质效果的最大因素。
[Abstract]:In order to improve the properties of aluminum alloy, the effect of SB modifier on the microstructure and properties of Al-Si aluminum alloy was studied by adding SB modifier to the matrix Al-6%Si alloy. The results show that after adding SB modifier to Al-6%Si alloy, the coarse eutectic Si can be changed from needle shape to small strip or granular shape, 伪 -Al dendrite distribution is uniform, and the hardness and toughness of the alloy are improved. The optimum modification process is as follows: the metamorphic temperature is 740 鈩，

本文编号：1826209