Ni_(20)Zr_(10)Al_(70)非晶合金的制备技术及组织的研究  

The Prepatation Technique of Rapidly Solidified Amorphous Ni_(20)Zr_(10)Al_(70) Alloy

作　　者：石广新[1] 张国胜[2] 关绍康[1] 王西科[1] 沈宁福[1] 

机构地区：[1]郑州大学材料工程学院,河南郑州450002 [2]北京科技大学材料工程学院,北京100083

出　　处：《郑州大学学报（工学版）》2004年第4期49-51,共3页Journal of Zhengzhou University（Engineering Science）

基　　金：国家自然科学基金资助项目(59771033)

摘　　要：利用快速凝固单辊平面流铸技术,通过调整各种工艺参数,成功地制备了Ni20Zr10Al70非晶合金条带.利用XRD、TEM和SAED等手段对合金的非晶态结构进行了验证,并对不同凝固速率下合金的相组成进行了分析.结果表明:随着凝固速率的提高,Ni20Zr10Al70合金的凝固首先是NiAl3相与α-Al相的结晶受到抑制;随着凝固速率进一步增大,Ni0 3Al1 7Zr相的结晶也受到抑制;凝固速率再进一步增大,Ni2Al3相的结晶也受到抑制,最终得到完全的非晶态结构.　In this paper,amorphous Ni_(20)Zr_(10)Al_(70) alloy ribbons are prepared by using the method of planer flow casting and adjusting the process parameters.XRD,TEM and SAED are used to testify the amorphous structure.The phase composition of the alloy under different solidification rates are analysed.The results indicate that,with the solidification rate increasing,the crystals of NiAl_3 and α-Al are restrained first,then the crystal of Ni_(0.3)Al_(1.7)Zr is prevented ,and that of Ni_2Al_3 is checked,at last,complete amorphous structure is obtained during the solidification of Ni_(20)Zr_(10)Al_(10) alloy.

关 键 词：镍 锆 铝 非晶态合金 制备技术 快速凝固 

分 类 号：TG146.15[一般工业技术—材料科学与工程] TG146.21[金属学及工艺—金属材料]