Nb添加对Zr_（50.5-x）Al_9Ni_（4.05）Cu_（36.45）Nb_x非晶合金热稳定性及力学性能的影响

IMR OpenIR

	Nb添加对Zr_（50.5-x）Al_9Ni_（4.05）Cu_（36.45）Nb_x非晶合金热稳定性及力学性能的影响
其他题名	Effect of Nb addition on thermal stability and mechanical properties of Zr_（50.5-x）Al_9Ni_（4.05）Cu_（36.45）Nb_x amorphous alloy
	张丹; 邱克强; 任英磊; 李荣德; 胡壮麒
	2015
发表期刊	中国有色金属学报
ISSN	1004-0609
卷号	25.0 期号:007 页码:1876-1881
摘要	采用铜模铸造法,制备了直径为2 mm的Zr50.5-xAl9Ni4.05Cu36.45Nbx（x=0,1,2,4,摩尔分数,%）完全非晶棒材。分别采用X射线衍射仪（XRD）、扫描电镜（SEM）、透射电镜（TEM）、差示扫描量热计（DSC）和力学性能试验机对合金的相组成、结构、热物性参数和力学性能进行研究。结果表明：添加Nb对所研究合金的玻璃转变温度Tg影响不大,但提高了晶化温度Tx和过冷液相区ΔTx;当x=4时,合金具有最高的玻璃转变温度Tx=773.4 K和最大过冷液相区ΔTx=68.1 K。依据耐温和热塑性成形要求,非晶合金的热稳定性可用玻璃转变温度Tx和过冷液相区ΔTx来分别表示。随着合金中Nb添加量的增加,非晶合金的双重热稳定性提高。非晶合金的断裂强度随着Nb添加量的增加先减小后增加,当x=4时,合金的最高断裂强度为2032 MPa。
其他摘要	Zr50.5-xAl9Ni4.05Cu36.45Nbx（x=0, 1, 2, 4, mole fraction, %） amorphous alloy bar with 2 mm in diameter were fabricated by copper mold casting method. The phase constitution, microstructure, thermal property and mechanical properties of alloys were investigated by X-ray diffractometry（XRD）, scanning electron microscopy（SEM）, transmission electron microscopy（TEM）, differential scanning calorimetry（DSC） and electronic testing machine. The results show that the effect of Nb addition on the glass transition temperature Tg of the alloys is slight. However, the crystallization temperature Tx and supercooled liquid region ΔTx of the alloy obviously increase with increasing the Nb addition. When x is 4, the alloy has the highest glass crystallization temperature（Tx=773.4 K） and largest supercooled liquid region（ΔTx=68.1 K）. According to the demand of heat tolerance and thermoplasticity shaping, the thermal stability of amorphous alloy can be represented by Tx and ΔTx, respectively. And for this investigated system, the thermal stability of amorphous alloy can be enhanced by increasing the Nb content. The fracture strength decreases first and then increases with increasing the Nb content, and the fracture strength reaches the highest value of 2032 MPa while x is 4.
关键词	Zr50.5-xAl9Ni4.05Cu36.45Nbx 非晶合金 Nb添加热稳定性力学性能
收录类别	CSCD
语种	中文
CSCD记录号	CSCD:5504608
引用统计	被引频次：1[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/152870
专题	中国科学院金属研究所
作者单位	中国科学院金属研究所
推荐引用方式 GB/T 7714	张丹,邱克强,任英磊,等. Nb添加对Zr_（50.5-x）Al_9Ni_（4.05）Cu_（36.45）Nb_x非晶合金热稳定性及力学性能的影响[J]. 中国有色金属学报,2015,25.0(007):1876-1881.
APA	张丹,邱克强,任英磊,李荣德,&胡壮麒.(2015).Nb添加对Zr_（50.5-x）Al_9Ni_（4.05）Cu_（36.45）Nb_x非晶合金热稳定性及力学性能的影响.中国有色金属学报,25.0(007),1876-1881.
MLA	张丹,et al."Nb添加对Zr_（50.5-x）Al_9Ni_（4.05）Cu_（36.45）Nb_x非晶合金热稳定性及力学性能的影响".中国有色金属学报 25.0.007(2015):1876-1881.