添加Al对Zr35Ti30Cu7.5Be27.5块体金属玻璃力学性能和微观结构的影响

稀有金属材料与工程, 2013, 42(3): 470-473.

添加Al对Zr35Ti30Cu7.5Be27.5块体金属玻璃力学性能和微观结构的影响

宗海涛 ^1, , 马明臻 ^2, , 李立新 ^3, , 景勤 ^4, , 张宝庆 ^5, , 刘日平 ^6,

1.燕山大学亚稳材料制备技术与科学国家重点实验室,河北秦皇岛066004;河南理工大,河南焦作454000

2.燕山大学亚稳材料制备技术与科学国家重点实验室,河北秦皇岛066004

3.河南理工大,河南焦作454000

4.燕山大学亚稳材料制备技术与科学国家重点实验室,河北秦皇岛066004

5.河南理工大,河南焦作454000

6.燕山大学亚稳材料制备技术与科学国家重点实验室,河北秦皇岛066004

基金项目: Natural Sciences Foundation of Hebei(E2010001176) National Basic Research Priorities Program of China(2010CB731600) National Natural Sciences Foundation of China(51171160,51171163)

关键词：块体金属玻璃 , 变形与断裂 , 微观结构

Effect of Al Addition on the Mechanical Properties and Microstructure of Zr35Ti30Cu7.5Be27.5 Bulk Metallic Glass

Zong Haitao ^1, , Ma Mingzhen ^2, , Li Lixin ^3, , Jing Qin ^4, , Zhang Baoqing ^5, , Liu Riping ^6,

1.燕山大学亚稳材料制备技术与科学国家重点实验室,河北秦皇岛066004;河南理工大,河南焦作454000

2.燕山大学亚稳材料制备技术与科学国家重点实验室,河北秦皇岛066004

3.河南理工大,河南焦作454000

4.燕山大学亚稳材料制备技术与科学国家重点实验室,河北秦皇岛066004

5.河南理工大,河南焦作454000

6.燕山大学亚稳材料制备技术与科学国家重点实验室,河北秦皇岛066004

Keywords： bulk metallic glasses , deformation and fracture , microstructure

利用单轴压缩试验研究了用部分Al替代Zr对Zr35-xTi30Cu7.5Be27.5Alx(x=0,1,1.5,2,2.5,5,at％)块体金属玻璃力学性能的影响.研究表明,当添加Al含量为1.5 at％和2 at％时,所得到的块体金属玻璃的压缩塑性从0.95％(x=0)分别提高至15.10％(x=1.5)和3.45％(x=2).利用扫描电子显微镜(SEM)对金属玻璃样品的断裂形貌进行了表面分析.利用透射电子显微镜(TEM)对不同Al含量的块体金属玻璃试样进行了微观结构表征,结果显示,Al含量为1.5at％和2at％的金属玻璃样品的微观结构呈现出了纳米级别的“微观不均匀性”.最后,结合临界剪切应力(CSS)讨论了微观结构与塑性变形行为之间的关联性.

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