Microstructure Evolution and Performance Improvement of Hypereutectic Al-Mg2Si Metallic Composite with Ca or Sb.
作者： Min Zuo , Boda Ren , Zihan Xia , Wenwen Ma , Yidan Lv
DOI: 10.3390/MA13122714
关键词:
摘要: In this article, the modification effects on Al–Mg2Si before and after heat treatment were investigated with Ca, Sb, (Ca + Sb). comparison single Ca or samples composition modifiers Sb) had optimal microstructure. The sample a molar ratio for Ca-to-Sb of 1:1 obtained relatively higher properties, which Brinell hardness values remarkably increased by 31.74% 28.93% in bare alloy. According to differential scanning calorimetry analysis (DSC), it was found that nucleation behavior primary Mg2Si phase could be significantly improved using chemical modifiers. Some white particles embedded center phases, deduced Ca5Sb3 through X-ray diffraction (XRD) field-emission electron microscope (FESEM) analyses. Furthermore, articles possess rather low mismatch degree based Phase Transformation Crystallography Lab software (PTCLab) calculation, meaning efficient capability estimated.
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