中文摘要：

采用单辊真空甩带法制备一种新型Ni基非晶合金（Ni68.6W17.9B13.5,摩尔分数）。结果表明：B元素含量对Ni-W-B体系形成非晶合金具有较大影响,B含量较低时不利于形成非晶合金,而当B含量高达13.5%（摩尔分数）时可形成Ni-W-B非晶合金;Ni68.6W17.9B13.5非晶合金的玻璃转化温度和晶化温度分别高达768 K和781.5 K,采用Ozawa法计算其晶化激活能为（637±60）kJ/mol,表明其具有较高的热稳定性;Ni68.6W17.9B13.5非晶合金的抗拉强度约为2331 MPa,表明其具有在高强度领域应用的潜力。

英文摘要：

A novel Ni-based metallic glass, i.e., Ni68.6W17.9B13.5（mole fraction, %）, was prepared using melt spinning method. The results showed that the element B has much effect on the glass forming ability of the Ni-W-B metallic glass. Ni-W-B metallic glass could not be fabricated with lower content of B, whereas a higher content of 13.5% B could easily lead to the fully amorphous structure. The glass transition temperature and the onset temperature of crystallization are as high as 768 K and 781.5 K, respectively, and the crystallization activation energy calculated by Ozawa model is（637±60） k J/mol, which showed strong thermal stability of Ni68.6W17.9B13.5 metallic glass. This novel Ni-based metallic glass also exhibited good mechanical properties with the tensile strength of about 2331 MPa. The results indicate that this metallic glass should have a promising application in high strength material.