EFFECT OF THE ADDITION OF LI ON THE STRUCTURE AND MECHANICAL PROPERTIES OF HYPOEUTECTIC Al-Mg2Si ALLOYS

Acta Polytechnica

Jakub Horník¹  Kostiantyn Mykhalenkov²  Olena Prach² 

[1] CTU in PragueFaculty of. Mechanical engineering;National Technical University of Ukraine “KPI”Faculty of Physical Engineering;

关键词: cast Al-Mg-Si alloys, Li addition, DSC, nanosize precipitation;   

DOI  :  10.14311/AP.2015.55.0253

来源: DOAJ

【 摘 要 】

Alloys with various contents of Li were studied by means of  differential scanning calorimetry (DSC), transmission electron microscopy (TEM) and energy dispersive X-Ray microanalysis (EDX).
The TEM investigations revealed that three different types of precipitation are formed in the alloy matrix during artificial aging. Two of the types represent different morphologies of Mg₂Si precipitates. The appearance of the third type, identified as the δ-Al₃Li phase, shows that the Al-Mg-Si system can be used successfully for designing an Li-containing casting alloy. However, this alloy has not yet been developed.

【 授权许可】

Unknown