Effect of negative overload on fatigue-creep interaction for a Ni-base alloy

Jishan Zhang; Wangyue Yang; Guoliang Chen; Qingquan Geng; Linji Huang

Effect of negative overload on fatigue-creep interaction for a Ni-base alloy

Jishan Zhang^*
, Wangyue Yang
, Guoliang Chen
, Qingquan Geng
, Linji Huang

^*Corresponding author for this work

University of Science and Technology Beijing

Research output: Contribution to journal › Article › peer-review

Abstract

The effect of negative overload (S_P) on fatigue-creep interactions for superalloy GH698 has been studied at 700°C. This effect depends on the magnitude of S_P. The cyclic fracture lives for tests with S_P of of 0 to 400 MPa are longer than those without S_P, but this effect was negative while the S_P value was higher or lower. The changing tendency of the dynamic creep rate exhibits an inverse character. The S_P effect reduces the dynamic creep rate, promotes fatigue damage and causes a change of fracture model. It retards crack propagation and causes the fatigue damage due to the S_P cycles. How these factors work depends on the magnitude of the stress.

Original language	English
Pages (from-to)	A119-A125
Journal	Jinshu Xuebao/Acta Metallurgica Sinica
Volume	24
Issue number	2
State	Published - Apr 1988
Externally published	Yes

Cite this

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title = "Effect of negative overload on fatigue-creep interaction for a Ni-base alloy",

abstract = "The effect of negative overload (SP) on fatigue-creep interactions for superalloy GH698 has been studied at 700°C. This effect depends on the magnitude of SP. The cyclic fracture lives for tests with SP of of 0 to 400 MPa are longer than those without SP, but this effect was negative while the SP value was higher or lower. The changing tendency of the dynamic creep rate exhibits an inverse character. The SP effect reduces the dynamic creep rate, promotes fatigue damage and causes a change of fracture model. It retards crack propagation and causes the fatigue damage due to the SP cycles. How these factors work depends on the magnitude of the stress.",

author = "Jishan Zhang and Wangyue Yang and Guoliang Chen and Qingquan Geng and Linji Huang",

year = "1988",

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T1 - Effect of negative overload on fatigue-creep interaction for a Ni-base alloy

AU - Zhang, Jishan

AU - Yang, Wangyue

AU - Chen, Guoliang

AU - Geng, Qingquan

AU - Huang, Linji

PY - 1988/4

Y1 - 1988/4

N2 - The effect of negative overload (SP) on fatigue-creep interactions for superalloy GH698 has been studied at 700°C. This effect depends on the magnitude of SP. The cyclic fracture lives for tests with SP of of 0 to 400 MPa are longer than those without SP, but this effect was negative while the SP value was higher or lower. The changing tendency of the dynamic creep rate exhibits an inverse character. The SP effect reduces the dynamic creep rate, promotes fatigue damage and causes a change of fracture model. It retards crack propagation and causes the fatigue damage due to the SP cycles. How these factors work depends on the magnitude of the stress.

AB - The effect of negative overload (SP) on fatigue-creep interactions for superalloy GH698 has been studied at 700°C. This effect depends on the magnitude of SP. The cyclic fracture lives for tests with SP of of 0 to 400 MPa are longer than those without SP, but this effect was negative while the SP value was higher or lower. The changing tendency of the dynamic creep rate exhibits an inverse character. The SP effect reduces the dynamic creep rate, promotes fatigue damage and causes a change of fracture model. It retards crack propagation and causes the fatigue damage due to the SP cycles. How these factors work depends on the magnitude of the stress.

UR - https://www.scopus.com/pages/publications/0023985652

M3 - 文章

AN - SCOPUS:0023985652

SN - 0412-1961

VL - 24

SP - A119-A125

JO - Jinshu Xuebao/Acta Metallurgica Sinica

JF - Jinshu Xuebao/Acta Metallurgica Sinica

IS - 2

ER -

Effect of negative overload on fatigue-creep interaction for a Ni-base alloy

Abstract

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