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首页> 外文会议>Annual International Workshop on Materials Science and Engineering >Comparative Study on the As-cast Microstructures and Mechanical Properties of AZ91D and AM60B Alloys by Addition of Nd
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Comparative Study on the As-cast Microstructures and Mechanical Properties of AZ91D and AM60B Alloys by Addition of Nd

机译：添加ND的AZ91D和AM60B合金的铸造微观结构和力学性能的比较研究

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摘要

As-cast microstructures and phase compositions of AZ91D-xNd and AM60B-xNd (x=0～2.5) alloys were investigated. Meanwhile, the tensile mechanical property and impact toughness were tested. With increasing the Nd content, β-Mg_(17)Al_(12) phase originally precipitating by discontinuous network or small dispersed block begins to break and decrease gradually. At the same time, fine rod-shaped or small block new phase Al_3Nd with high thermal stability increases gradually. The tensile mechanical property at ambient temperature is enhanced gradually for AZ91D-xNd alloys; however, it is firstly reduced obviously and then enhanced gradually for AM60B-xNd alloys. The maximum value of tensile strength σ_b and elongation δ can reach 225 MPa, 11.0% and 230 MPa, 16.5% for AZ91D-2.17Nd and AM60B-2.32Nd alloys, respectively. Addition of Nd can enhance the tensile mechanical property at elevated temperature for AZ91D alloy, but it cannot ameliorate that for AM60B alloy. Meanwhile, it is better for the former series alloys. Impact toughness is enhanced gradually for AZ91D-xNd alloys, while for AM60B-xNd alloys, it is reduced significantly at the start and then remains almost unchanged, which is still better.
机译：研究了AZ91D-XND和AM60B-XND（X = 0〜2.5）合金的铸造微结构和相组合物。同时，测试拉伸力学性能和冲击韧性。随着Nd含量的增加，β-Mg_（17）Al_（12）相对于不连续网络或小分散块促使的β（12）相开始逐渐破裂并降低。同时，具有高热稳定性的精细杆状或小块新相AL_3ND逐渐增加。对于AZ91D-XND合金，逐渐增强环境温度下的拉伸机械性能;然而，首先将其明显减少，然后逐渐增强AM60B-XND合金。拉伸强度σ_B和伸长率δ的最大值可分别达到225MPa，11.0％和230MPa，230mPa，16.5％，分别为AZ91D-2.17ND和AM60B-2.32ND合金。添加Nd可以在AZ91D合金的升高温度下增强拉伸力学性质，但不能改善AM60B合金的改善。同时，前型系列合金更好。对于AZ91D-XND合金，逐渐增强冲击韧性，而对于AM60B-XND合金，它在开始时显着减少，然后几乎保持不变，这仍然更好。

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