摘要
用单辊旋淬法制备了Al80Ni15 xY2Zr3Cux(x=1、3、4、6、7、9)铝基非晶条带,通过XRD和DSC等测试手段研究了合金体系的非晶形成能力和热稳定性.研究结果表明,该合金体系均具有一定的非晶形成能力,不同w(Cu)的体系的非晶形成能力和热稳定性有较大的差别,组分原子的相互匹配对合金体系的非晶形成能力起重要作用.当x=4时,体系具有最强的非晶形成能力,可形成完全非晶,其初始晶化温度为281.3 ℃.适当的w(Cu)的添加可提高体系的非晶形成能力,但过量铜会促使晶化相(如αAl相)析出,随w(Cu)的增加,体系的热稳定性逐渐降低,体系的非晶形成能力与热稳定性不是同步变化的,是由不同的机理所决定.
The Al-based amorphous ribbons Al_(80)Ni_(15-x)Y_2Zr_3Cu_x (x=1,3,4,6,7,9) are prepared by melt-spinning method.The glass forming ability and thermal stability of the alloy systems are investigated with XRD and DSC analysis.The results indicate that the alloy systems that have been studied could be formed amorphous alloys in a certain level,and the GFA and thermal stability of them altered with different Cu additions.The matching between atoms of the constituents play an important role in formation of the amorphous alloys.When x=4,the alloy has the best GFA and is most likely to be amorphous alloys,its initial crystallization temperature is 281.3 ℃.Proper Cu addition can improve the GFA,but too many Cu may result in formation of crystalline phases (such as α-Al phase).With the increase of Cu contents,the thermal stability of the alloys decrease gradually.The GFA and thermal stability of the alloy systems are not chan-ge in the same way,which depend on different mechanisms.
出处
《兰州理工大学学报》
CAS
北大核心
2005年第2期5-8,共4页
Journal of Lanzhou University of Technology
基金
甘肃省科技攻关项目(GS002 A52 026)
关键词
铝基非晶条带
CU
晶化温度
GFA
Al-based amorphous ribbons
Cu
crystallization temperature
GFA
