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| Effect of mischmetal and yttrium on microstructures and mechanical properties of Mg-Al alloy | |
| 引用本文： | 张诗昌,魏伯康,蔡启舟,王立世. Effect of mischmetal and yttrium on microstructures and mechanical properties of Mg-Al alloy[J]. 中国有色金属学会会刊, 2003, 13(1): 83-87 |
| 作者姓名： | 张诗昌 魏伯康 蔡启舟 王立世 |
| 作者单位： | StateKeyLaboratoryofDieandMouldTechnology,HuazhongUniversityofScienceandTechnology,Wuhan430074,China |
| 摘 要： | The effect of yttrium and mischmetal(MMs)on the as-cast and solid solution treated structures of Mg-Al alloys with different Al-contents was investigated.The results show that the MMs in Mg-Al alloy existed in rod Al4(Ce,La)compound while Y in Mg-Al alloy in polygonal Al2Y compound.The amount of Mg17Al12 in Mg-Al alloy is decreased with increasing Y or MMs addition,and Mg17 Al12 intermetallic compound is changed from continuous network to discontinuous one.The Al4(Ce,La)and Al2Y compounds are not dissolved into Mg-Al alloy matrix during solid solution treatment so that their high heat stability can be exhibited.The experiment of mechanical properties indicate that elongation and impact toughness of the Mg-Al-Y alloy with polygonal Al2Y compound are higher than those of Mg-Al-MMs alloy with rod A4(Ce,La) compound. |
| 关 键 词： | 镁铝合金 钇 混合稀土合金 显微结构 机械性能 |
Effect of mischmetal and yttrium on microstructures and mechanical properties of Mg-Al alloy |
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| ZHANG Shi-chang,WEI Bo-kang,CAI Qi-zhou,WANG Li-shi. Effect of mischmetal and yttrium on microstructures and mechanical properties of Mg-Al alloy[J]. Transactions of Nonferrous Metals Society of China, 2003, 13(1): 83-87 | |
| Authors: | ZHANG Shi-chang WEI Bo-kang CAI Qi-zhou WANG Li-shi |
| Abstract: | The effect of yttrium and mischmetal(MMs) on the as-cast and solid solution treated structures of Mg-Al alloys with different Al-contents was investigated. The results show that the MMs in Mg-Al alloy existed in rod Al 4(Ce, La)compound while Y in Mg-Al alloy in polygonal Al 2Y compound. The amount of Mg 17Al 12 in Mg-Al alloy is decreased with increasing Y or MMs addition, and Mg 17Al 12 intermetallic compound is changed from continuous network to discontinuous one. The Al 4(Ce, La) and Al 2Y compounds are not dissolved into Mg-Al alloy matrix during solid solution treatment so that their high heat stability can be exhibited. The experiment of mechanical properties indicate that elongation and impact toughness of the Mg-Al-Y alloy with polygonal Al 2Y compound are higher than those of Mg-Al-MMs alloy with rod Al 4(Ce, La) compound. |
| Keywords: | yttrium and mischmetal Mg-Al alloy structure and property microprobe |
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