Rotating-beam fatigue properties and effect of Ni element additive in bulk glassy Zr50Cu40Al10 alloys

Yoshihiko Yokoyama; Kenzo Fukaura; Akihisa Inoue

Rotating-beam fatigue properties and effect of Ni element additive in bulk glassy Zr₅₀Cu₄₀Al₁₀ alloys

Yoshihiko Yokoyama, Kenzo Fukaura, Akihisa Inoue

Institute for Materials Research (IMR)

Research output: Contribution to conference › Paper

3 Citations (Scopus)

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
Pages	77-90
Number of pages	14
Publication status	Published - 2003 Jul 23
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
Country	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

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Yokoyama, Y., Fukaura, K., & Inoue, A. (2003). Rotating-beam fatigue properties and effect of Ni element additive in bulk glassy Zr₅₀Cu₄₀Al₁₀ alloys. 77-90. Paper presented at Materials Lifetime: Science and Engineering, San Diego, CA, United States.

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abstract = "We examined W{\"o}hler 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 W{\"o}hler curves.",

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AU - Yokoyama, Yoshihiko

AU - Fukaura, Kenzo

AU - Inoue, Akihisa

PY - 2003/7/23

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N2 - 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.

AB - 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.

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KW - ZrCuNiAl

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