工业原料制备Zr-Cu基非晶合金及其压缩断裂行为研究
孙广杰12，任慧平1，王世伟2，赵军2，孙晓华2，战中学3
（1 内蒙古科技大学 材料与冶金学院，内蒙古 包头 014010；2 包头稀土研究院，内蒙古 包头 014030；3中国兵器工业集团第五二研究所，内蒙古 包头 014034）
关键词：非晶合金，玻璃形成能力，压缩断裂，剪切带
中图分类号：TG139 文献标识码：A
摘 要：采用工业原料制备了Φ4mm的Zr55Cu30Ni5Al10非晶合金棒材，利用XRD、DSC、SEM分析了该合金体系玻璃形成能力及压缩断裂行为。结果表明：Zr55Cu30Ni5Al10非晶合金棒材在10K/s、15K/s、20K/s的升温速度下，过冷液相区△Tx分别为71.2 K、72.4K、68.1K，具有较大的玻璃形成能力。该非晶合金棒材抗压强度达到1702MPa，断口微观形貌为典型的脉络状花纹，在断口与试样连接处发现大量的剪切带存在，同时还产生了局部熔化现象。
Research Preparation and Compressive Fracturing Behavior
of Zr-Cu Based Amorphous Alloy Prepared with Industrial Raw Materials
Sun Guangjie12，Ren Huiping1，Wang Shiwei2，Zhao Jun2，Sun Xiaohua2，Zhan Zhongxue3
（1 Materials and Metallurgy SchoolInner Mongolia University of Science & Technology，Baotou 014010；2 Baotou Research Institute of Rare Earths，Baotou 014030；3 No.52 Institute of China Ordnance Industries Group，Baotou 014034）
Key words：Amorphous alloy, Glass formation ability, Compressive fracturing, Shear bands
Abstract：Φ4mm Zr55Cu30Ni5Al10 amorphous rod was prepared with industrial raw materials. The glass formation ability and compressive fracturing behavior of Zr55Ni5Cu30Al10 amorphous alloy was investigated by using X-Ray diffraction (XRD) ,differential scanning calorimetry (DSC) and scanning electron microscope (SEM). The results show thatthe super cooled liquid region△Tx of Zr55Cu30Ni5Al10 measured by DSC is 71.2K,72.4K,68.1K at the heating rate of 10K/s,15K/s,20K/s respectively. The material has large glass formation ability (GFA).When compressive strength of Zr55Cu30Ni5Al10 amorphous alloy rod reaches 1702 MPa, the micro-morphology of fracture surface shows typical choroids pattern, while large quantity of shear bands exist at the fracture and joint area,and partial fusion phenomena happened.