Fatigue Property in Ni-Based Bulk Metallic Glass

被引：2
|
作者：
Fujita, Kazutaka [1 ]
Misumi, Kousuke [1 ]
Zhang, Wei [2 ]
Inoue, Akihisa
机构：
[1] Ube Natl Coll Technol, Dept Mech Engn, Ube, Yamaguchi 7558555, Japan
[2] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan
来源：
JOURNAL OF THE JAPAN INSTITUTE OF METALS | 2011年 / 75卷 / 09期
关键词：
fatigue; fatigue limit; bulk metallic glass; amorphous; fractography; FRACTURE-TOUGHNESS; STRENGTH; ALLOYS; AL;
D O I：
10.2320/jinstmet.75.474
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Fatigue test was carried out on Ni-based bulk metallic glass (BMG) for which there is still no reports on fatigue strength. Test alloy rods with a diameter of 2 mm were prepared in Ni60Zr20Nb15Al5 at% systems by copper mold casting method. The tensile strength (sigma(B)) was 2.9 GPa. The test specimens were machined to hourglass shape type with a minimum diameter of 0.9 mm. The specimens were tested at a stress ratio of 0.1 and a frequency of 10 Hz. The fatigue limit (sigma(W)) and fatigue ratio (sigma(W)/sigma(B)) in the Ni-based BMG showed high values of 1.68 GPa and 0.58, respectively. The tendency that the sigma(W) increased with increasing the sigma(B) in BMGs was indicated in the Ni-based BMG. In addition, the fatigue fracture toughness in the Ni-based BMG showed a high value of 14 MPa.m(1/2).
引用
收藏
页码：474 / 478
页数：5
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