微 合 金 化 对 多 相 增 强 铜 锆 基 非 晶 复 合 材 料 组 织 性 能 影 响

Based on the［（Zr_0.5Cu_0.5）_0.93Al_0.07］₉₇Ta₃（atomic ratio）amorphous composites with multiphase compound structure，the effects of alloying elements on microstructure and mechanical properties were investigated through microalloying of different elements（Ti，Co，Sn）. The results indicate that Sn addition can simultaneously improve the amorphous forming ability of the matrix and thermal stability of B2-CuZr phase，which avoids the occurrence of martensitic transformation of B2-CuZr phase or precipitation of other crystalline phases in the matrix during the solidification process，leading to the multiphase reinforced Cu-Zr based amorphous composites with uniformly dispersed reinforcing phases. The compressive strength and plastic deformation of developed［（Zr_0.5Cu_0.5）_0.925Al_0.07Sn_0.005］₉₇Ta₃ amorphous composites are increased by 9.6% and 131.3%，respectively，compared with those of［（Zr_0.5Cu_0.5）_0.93Al_0.07］₉₇Ta₃.