Microstructure evolution of in situ Mg2Si/Al-Si-Cu composite in semisolid remelting processing

作者：Qin QD; Zhao YG^*; Xiu K; Zhou W; Liang YH

来源：Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 2005, 407(1-2): 196-200.

DOI：10.1016/j.msea.2005.07.021

• semisolid
• aluminum
• composites
• microstructure

A semisolid of in Situ Mg2Si/Al-Si-Cu composite is fabricated by strain-induced melt activated (SIMA) process, and the effects of isothermal holding time at the temperature of 580 degrees C and compression ratio on microstructure of the material are investigated. The result shows that the morphology of primary Mg2Si phase is identified as globular and/or elliptic with an average particle size of 25-30 mu m. Furthermore, the morphology of alpha-Al grain from rosette type changes to globular and its size increases as the increasing of isothermal holding time. With the increasing of compression ratio, the morphology of alpha-Al grain becomes more globular and its size decreases.

• 出版日期2005-10-25
• 单位吉林大学