摘要
研究了不同Al含量对Cu-Zr-Ti基块体非晶合金力学性能的影响。X射线衍射(XRD)图谱显示,制备态试样均为完全非晶结构。室温压缩试验及显微硬度测试表明,当Al含量(摩尔分数)达到6%时,试样的抗压强度为2002MPa,断裂应变量为6.48%,显微硬度(HV)为767.6。用扫描电镜(SEM)对(Cu60Zr33Ti7)94Al6试样的压缩断面进行观察,发现由于断面上存在大量均匀细小韧窝抑制剪切带的快速扩展,导致合金力学性能的提高。
Effects of different A1 additions on mechanical properties of Cu-Zr-Ti based amorphous alloy were investigated. The samples prepared exhibit totally amorphous structure by XRD （X-ray diffraction）. With 6% A1 addition, compressive strength, fracture strain and micro-hardness of samples reach 2 002 MPa and 6.48% and 767.6, respectively. The compressive fracture of （Cu60 Zr33 TiT ）94 A16 amorphous alloy was observed. The results show that the improvement of mechanical properties of the amorphology is attributed to amouts of uniformly distributed fine dimples in the fracture restricting the rapid propagation of shearing band.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2013年第1期73-76,共4页
Special Casting & Nonferrous Alloys
基金
国家自然科学基金资助项目(51061008)
关键词
非晶合金
力学性能
室温压缩
Amorphous Alloy
Mechanical Properties
Ambient Compression
