Effect of peak loads and cooling rates on creep behavior of Zr-based bulk metallic glass

被引：8
|
作者：
Li, Chunyan [1 ,2 ,3 ]
Li, Xinling [1 ]
Zhao, Zhenxiang [1 ]
Zhu, Fuping [1 ]
Kou, Shengzhong [1 ,2 ]
Zhao, Yanchun [1 ,2 ]
机构：
[1] Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Gansu, Peoples R China
[2] Lanzhou Univ Technol, State Key Lab Adv Proc & Reuse Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China
[3] Lanzhou Univ Technol, Wenzhou Engn Inst Pump & Valve, Wenzhou 325105, Zhejiang, Peoples R China
来源：
JOURNAL OF NON-CRYSTALLINE SOLIDS | 2019年 / 522卷
基金：
中国国家自然科学基金;
关键词：
Zr-based bulk metallic glass; Nanoindentation; Creep; Cooling rate; Variable load; NANOINDENTATION; FLOW; DEFORMATION;
D O I：
10.1016/j.jnoncrysol.2019.119596
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this study, different peak loads and varying cooling rates on creep behavior of (Zr0.6336Cu0.1425Ni0.1012Al0.12)(97.4)Er-2.6 bulk metallic glass were studied by nanoindentation tester and atomic force microscopy (AFM). The results show that the change of different load and cooling rate has a great influence on the creep behavior of the alloy. Under high peak load conditions, the increasing of the creep displacement and the stress exponent (n) show strong indentation size effect. The hardness of the specimen without rare earth element is 5 times larger than the specimen with rare earth element. With the increase of the cooling rate, the creep displacement of the specimen is increasing and the time to enter the steady state creep is prolonging. The hardness and elastic modulus of the material are sensitive to the cooling rate relative to the load change.
引用
收藏
页数：7
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