Abstract
We examined Wöhler curves of Zr50Cu40Al10 and Zr50Cu30Ni10Al10 bulk glassy alloys using a rotating-beam fatigue test to evaluate the effect of adding a Ni element on fatigue strength. As a result, we found that the fatigue limit was increased from 250 MPa to 500 MPa by adding 10 at% Ni instead of Cu to a Zr50Cu40Al10 bulk glassy alloy. A Zr50Cu40Al10 bulk glassy alloy exhibits a wide fatigue-fractured region with striation-like marks up to 80% in response to low applied stress (near the fatigue limit). However, adding Ni limits the fatigue-fractured region to half of the whole fractured surface. We also observed fatigue-fracture surfaces of Zr50Cu40Al10 and Zr50Cu30Ni10Al10 bulk glassy alloys to estimate the fatigue-fracture toughness. The fatigue fracture toughness decreases suddenly around N = 103 to 104, similar to Wöhler curves.
Original language | English |
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Pages | 77-90 |
Number of pages | 14 |
Publication status | Published - 2003 |
Event | Materials Lifetime: Science and Engineering - San Diego, CA, United States Duration: 2003 Mar 2 → 2003 Mar 6 |
Other
Other | Materials Lifetime: Science and Engineering |
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Country/Territory | United States |
City | San Diego, CA |
Period | 03/3/2 → 03/3/6 |
Keywords
- Bulk glassy alloy
- Fatigue limit
- Rotating-beam fatigue testing
- Striation-like mark
- Wöhler curve
- ZrCuAl and
- ZrCuNiAl
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanics of Materials
- Metals and Alloys