Effect of Antimony and Yttrium Addition on the High Temperature Properties of AZ91 Magnesium Alloy
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- 作者：Arun Boby ; K.K. Ravikumar ; U.T.S. Pillai ; utspillai@rediffmail.com ; B.C. Pai
- 关键词：AZ91 magnesium alloy ; Antimony ; Yttrium ; ¦Â-Mg17Al12
- 刊名：Procedia Engineering
- 出版年：2013
- 出版时间：2013
- 年：2013
- 卷：55
- 期：Complete
- 页码：98-102
- 全文大小：1380 K
文摘
The effect of individual and combined additions of Y and Sb on the microstructure and mechanical properties of AZ91 alloy has been studied. The results indicate that the additions introduce new Al2Y and Mg3Sb2 phase along with the Mg17Al12 -¦Â phase besides, refining the grains significantly. It can be seen that the ¦Â phase in Y added AZ91 + Sb alloy becomes much finer and distributed more uniformly than that of any other alloys. Minimum grain size 140 ¦Ìm is observed in AZ91alloy with 0.6 yttrium and 0.5 antimony additions. Moreover, improved room- and high-temperature mechanical properties are obtained in Sb added AZ91 + xY alloys. The maximum tensile properties are obtained with the alloy having the combined additions of 0.6 yttrium and 0.5 antimony.