摘要
利用真空冷壁坩埚感应熔炼及铜模离心铸造的方法制备了大尺寸非晶态Zr41.2 Ti13 .8Cu12 .5Ni10 Be2 2 .5材料 ,采用DTA和DSC分别研究了该合金的凝固特性及非晶态晶化行为。结果表明 :Zr41.2 Ti13 .8Cu12 .5Ni10 Be2 2 .5合金具有较低的熔点 ,表现出良好的深共晶特性 ,在较低的冷却速度下即可制备出大块部分非晶及全部非晶材料。Zr41.2 Ti13 .8Cu12 .5Ni10 Be2 2 .5大块非晶材料在 339.5℃发生玻璃转变 ,晶化温度为 4 2 0℃。
The bulk amorphous Zr_(41.2)Ti_(13.8)Cu_(12.5)Ni_(10)Be_(22.5) alloy was prepared by cold wall crucible induction melting and centrifugal casting into a copper mould. Solidification characteristic of the alloy was analyzed by differential thermal analysis (DTA) and crystallization behaviours of the amorphous alloy was analyzed by differential scanning calorimetry (DSC). It is shown that the melting point of Zr_(41.2)Ti_(13.8)Cu_(12.5)Ni_(10)Be_(22.5) alloy is relatively low, and the melt has a good eutectic characteristic. The partially amorphous and fully amorphous samples are prepared at low cooling rate. It is determined that the glass transition temperature(θ_g) of Zr_(41.2)Ti_(13.8)Cu_(12.5)Ni_(10)Be_(22.5) bulk amorphous alloy is 339.5 ℃ and the crystallization temperature (θ_x) is 420 ℃.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2003年第5期1083-1086,共4页
The Chinese Journal of Nonferrous Metals
关键词
大块非晶合金
玻璃转变
晶化
凝固
热力学
锆合金
solidification characteristic
bulk amorphous alloy
glass transition
crystallization
