Journal de la métallurgie des poudres et des mines

Abstrait

Study of the Mg-Al alloy's Carbon Addition-based Grain Refining Process

Zongchu Lu

The crystallisation kinetics of the alloys and the performance of the alloys after heat treatment with various mixed structures were evaluated on the basis of the amorphous and nano-crystalline cluster structure and their activity. X-ray powder diffraction was used to determine the phase structure and content. Differential scanning calorimetry was used to determine the mixed structure's crystallisation activation energy. Electrochemical analysis was used to determine the alloy's mixed structure's electrochemical activity [1]. The experimental findings indicate that while the mixed-structure alloy has better structural stability than the amorphous alloy, it also has substantially lower crystallisation activation energy. A meta-stable structural change and the development of a new phase are the two steps in the crystallisation process. Due to its mixed structure, which has a big real contact surface and a lot of active centres, the alloy has higher electrochemical activity. It also has a higher hardness and superior corrosion resistance, according to the electrochemical properties of the alloy [2].