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首页> 外文期刊>Journal of Materials Engineering and Performance >Effect of Melt Cleanliness on the Mechanical Properties and Microstructure on AZ91E Mg Alloy Castings
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Effect of Melt Cleanliness on the Mechanical Properties and Microstructure on AZ91E Mg Alloy Castings

机译：熔体清洁度对AZ91E镁合金铸件力学性能和组织的影响

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摘要

The current study examines various filter configurations, argon bubbling, and degasser addition to improve melt cleanliness of AZ91E permanent mold castings. The unfiltered castings had an average yield strength, ultimate tensile strength, and elongation of 93.3, 153.3 MPa, and 2.2% respectively. Using a fine mesh filter within the well of the mold, the ultimate tensile strength and elongation increased by 9 and 41%, respectively, compared to the unfiltered samples. A combination of a fine filter and argon bubbling resulted in an average increase in ultimate tensile strength and elongation of 29 and 123%, respectively, that matched the performance of the C_2Cl_6-based degassed castings with 95.8, 194.3, and 4.9% for yield strength, ultimate tensile strength, and elongation, respectively. The addition of the C_2Cl_6-based degasser released harmful vapors that can be avoided using the fine filter with argon bubbling. In all cases, the removal of MgO-based inclusions improved mechanical properties.
机译：当前的研究检查了各种过滤器配置，氩气鼓泡和添加脱气剂以提高AZ91E永久铸模铸件的熔体清洁度。未经过滤的铸件的平均屈服强度，极限抗拉强度和伸长率分别为93.3％，153.3 MPa和2.2％。与未过滤的样品相比，在模具孔内使用细孔过滤器，其最终抗张强度和伸长率分别提高了9％和41％。精细过滤器和氩气鼓泡的组合分别使极限抗拉强度和伸长率分别平均增加29％和123％，使基于C_2Cl-6的脱气铸件的性能达到95.8％，194.3％和4.9％的屈服强度，极限拉伸强度和伸长率。添加基于C_2Cl-6的脱气机可释放有害蒸气，使用带有氩气的细过滤器可以避免这些蒸气。在所有情况下，去除基于MgO的夹杂物都会改善机械性能。

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