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真空條件下Nd對AM60鎂合金組織與性能的影響
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Effects of Nd on Microstructures and Mechanical Properties of AM60 Magnesium Alloy in Vacuum Melting
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National Natural Science Foundation of China(90306014, 20471041)

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    摘要:

    研究了稀土Nd對AM60鎂合金組織的影響，并分析析出相及其對合金力學(xué)性能的影響。結(jié)果表明，在AM60合金中加入稀土Nd元素能有效地細(xì)化合金組織，使Mg17Al12相分離變細(xì)；Nd元素優(yōu)先與合金中的Al元素反應(yīng)生成二元高熔點Al11Nd3相；適量的稀土Nd能有效提高合金的抗拉強度、屈服強度和延伸率；過量的稀土Nd則會消耗合金中更多的Al元素和導(dǎo)致Al11Nd3相粗化，使合金的力學(xué)性能下降；力學(xué)性能測試結(jié)果表明，AM60-0.9Nd具有最高的抗拉強度(230 MPa)、最高的屈服強度(127 MPa)和最高延

    Abstract:

    The microstructure changes brought by the addition of Nd element to AM60 magnesium alloy were studied, the precipitating phases were identified and their influences on the mechanical properties of alloys were investigated. Results show that Nd addition makes the refinement of microstructure of the AM60 alloy, and decreases the size of Mg17Al12 phase. Nd element takes a priority to react with Al element over Mg, Mn and Zn forming binary phase Al11Nd3 with high melting point. Certain content of Nd can increase tensile strength, yield strength and elongation of the alloy. But with too much addition, Nd would combine with more Al in matrix and decrease strengthening effect because Al11Nd3 phase would become coarsening. The mechanical property tests indicate that AM60-0.9Nd alloy has the best properties. Maximum tensile strength, maximum yield strength, maximum elongation are 230 MPa, 127 MPa and 14% respectively, increased by 28%, 48% and 250% respectively

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張金旺,王社斌,張俊遠(yuǎn),張金玲,許并社.真空條件下Nd對AM60鎂合金組織與性能的影響[J].稀有金屬材料與工程,2009,38(7):1141~1145.[Zhang Jinwang, Wang Shebin, Zhang Junyuan, Zhang Jinling, Xu Bingshe. Effects of Nd on Microstructures and Mechanical Properties of AM60 Magnesium Alloy in Vacuum Melting[J]. Rare Metal Materials and Engineering,2009,38(7):1141~1145.]
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  • 收稿日期:2008-06-16
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