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Influence of Electrostatic Field on the Microstructure and Mechanical Properties of AZ91 Mg Alloy during Ageing Treatment
Advanced Engineering Materials ( IF 3.4 ) Pub Date : 2020-08-22 , DOI: 10.1002/adem.202000407 Meijuan Liu 1 , Ming Sun 1 , Binghui Zhang 1 , Zhengwen Xia 2 , Minghao Guo 1
Advanced Engineering Materials ( IF 3.4 ) Pub Date : 2020-08-22 , DOI: 10.1002/adem.202000407 Meijuan Liu 1 , Ming Sun 1 , Binghui Zhang 1 , Zhengwen Xia 2 , Minghao Guo 1
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The effects of electrostatic field on the microstructure and mechanical properties of AZ91 alloy during ageing treatment are studied. It is shown that electrostatic field can modify the precipitate distributions. With the help of electrostatic field (intensity 4 kV cm−1), the continuous precipitate (CP) is refined, whereas the discontinuous precipitate (DP) is suppressed to some extent. The tensile yield strength of peak‐aged AZ91 alloy is improved from 156 to 169 MPa. The mechanism by which the electrostatic field modifies the precipitate distributions is discussed via the resistivity data combined with the classical theory of vacancy‐dominant diffusion. It is shown that the electrostatic field probably enhances the bulk diffusion and then improves the competitiveness of CP against DP.
中文翻译：
时效处理中静电场对AZ91镁合金组织和力学性能的影响
研究了时效过程中静电场对AZ91合金组织和力学性能的影响。结果表明，静电场可以改变沉淀物的分布。借助于静电场（强度4kV cm -1），细化了连续沉淀物（CP），而在一定程度上抑制了不连续沉淀物（DP）。峰值时效AZ91合金的拉伸屈服强度从156 MPa提高到169 MPa。通过电阻率数据结合经典的空位-主导扩散理论讨论了静电场改变沉淀物分布的机理。结果表明，静电场可能会促进整体扩散，从而提高CP对DP的竞争力。
更新日期：2020-08-22
中文翻译：
时效处理中静电场对AZ91镁合金组织和力学性能的影响
研究了时效过程中静电场对AZ91合金组织和力学性能的影响。结果表明，静电场可以改变沉淀物的分布。借助于静电场（强度4kV cm -1），细化了连续沉淀物（CP），而在一定程度上抑制了不连续沉淀物（DP）。峰值时效AZ91合金的拉伸屈服强度从156 MPa提高到169 MPa。通过电阻率数据结合经典的空位-主导扩散理论讨论了静电场改变沉淀物分布的机理。结果表明，静电场可能会促进整体扩散，从而提高CP对DP的竞争力。
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