采用机械激活固相反应及真空热压方法制备纳米晶Mg2Si金属间化合物块体材料.研究表明,过量Mg配量对获得纯相Mg2Si至关重要.在1.5GPa压力于450℃热压得到的纯相Mg2Si纳米块体(相对密度D~98%,晶粒度d~54nm)断裂韧性达1.67MPa·m1/2,较常规粗晶Mg2Si有明显提高.
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