【摘要】 通过铜模铸造法制备Zr50.5Cu36.5Ni4Al9块体非晶合金.利用分离式霍普金森杆(SHPB),S-4800型扫描电镜等测试分析手段,研究Zr50.5Cu36.5Ni4Al9块体非晶合金在室温(25℃)和低温下(-40℃)动态压缩特性和断口形貌特征.结果表明:在动态压缩载荷作用下,Zr50.5Cu36.5Ni4Al9块体非晶合金抗压强度随载荷增加而降低.在-40℃低温条件下,动态抗压强度具有低温敏感性.在室温条件下,Zr50.5Cu36.5Ni4Al9块体非晶合金断口微观形貌特征主要是脉状花样,伴随裂纹和非晶合金熔化现象;在-40℃低温条件下,Zr50.5Cu36.5Ni4Al9块体非晶合金微观形貌特征主要是鱼骨状花样.更多还原

【Abstract】 Zr50.5Cu36.5Ni4Al9 bulk amorphous alloy has been prepared by copper mold casting method.The dynamic compression characteristics and the features of fracture morphology of Zr50.5Cu36.5Ni4Al9 bulk amorphous alloy at room temperature(25℃)and cryogenic temperature(-40 ℃)were investigated with split Hopkinson pressure bar(SHPB)and S-4800 scanning electronic microscope(SEM).The results show that,under the dynamic compression load,the anti-compressive strength decreased with the load increase of Zr50.5 Cu36.5 Ni4 Al9 bulk amorphous alloy.The dynamic anti-compressive strength of Zr50.5Cu36.5Ni4Al9 bulk amorphous alloy has cryogenic temperature sensitivity at-40℃ temperature.The main fracture morphology of the Zr50.5Cu36.5Ni4Al9 bulk amorphous alloy shows the vein patterns with the crack and amorphous alloys melted at room temperature.The main fracture morphology of the Zr50.5Cu36.5Ni4Al9 bulk amorphous alloy shows the herringbone pattern at-40℃ temperatures.更多还原