کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1611405 | 1516301 | 2014 | 6 صفحه PDF | دانلود رایگان |
• The carbon-inoculated Mg–3% Al melt was hold for different time.
• The evolutions of grain size and nucleating particles with prolonging the holding time were investigated.
• No obvious fading effect occurred for the Mg–3% Al alloy inoculated by carbon.
• The holding time had no obvious effects on Al4C3 nucleating particle densities, particle size distribution and mean sizes.
• The number of active nucleating particles with size over than 3 μm should be relatively stable with the holding time over than 5 min, resulting in the less fading.
The grain refinement of primary α-Mg phase in the Mg–3% Al alloy was studied by carbon inoculation. The grain size and nucleating particles in the samples cast from the melt held at different times after inoculation were observed. It is found that the primary α-Mg grains in the Mg–3% Al alloy could be effectively refined from the melt immediately inoculated. The grain size maintained relatively stable with increasing holding time from 5 to 120 min. Therefore, no obvious fading effect could be observed in the Mg–3% Al alloy inoculated by carbon. However, the holding time had no obvious effect on the particle densities, particle size distribution and the mean size of Al–C rich particles in the samples held over 5 min after inoculation. The particles varied in a range of 2–4.5 μm with a mean size of 2.85 μm. The number of active nucleating particles with the size larger than 3 μm was stable at prolonged holding time over 5 min, which resulted in the less fading in the inoculated melt.
Journal: Journal of Alloys and Compounds - Volume 592, 15 April 2014, Pages 313–318