Cyclic stress–strain behavior and low cycle fatigue life of cast A356 alloys

Song, Mou Sheng; Kong, Yuan; Mao, Ran; She, Yanchao

doi:10.1016/j.ijfatigue.2011.07.004

Cited by 51 publications

(24 citation statements)

References 20 publications

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“…The total dissipated energy is the sum of the plastic energy and the elastic energy in (MJ/m 3 ). This parameter model has been found to play an important role in the LCF damage process [10][11][12][13]. Figure 10 represents the evolutions of several fatigue damage parameters with the number of cycles on Alloy 617 where each parameter is normalized by its maximum value.…”

Section: Low Cycle Fatigue Damage Evaluationmentioning

confidence: 99%

“…One of the proposed models that seems to be more complex, is the so-called strain energy density based model. The fatigue of materials is a specific energy consuming process with an absorption of the cyclic deformation, and the fatigue life can be characterized by this absorbed mechanical energy [11]. The fatigue life analysis procedure based on total strain energy density has been used to separate the effect of microstructures on the fatigue life.…”

Section: Low Cycle Fatigue Damage Evaluationmentioning

confidence: 99%

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Effect of Strain Range on the Low Cycle Fatigue in Alloy 617 at High Temperature

Dewa

Kim

et al. 2017

Metals

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Abstract:The aim of this study is to investigate the fully-reversed low cycle fatigue properties of Alloy 617 in the air at 950 • C; these tests were conducted at total strain ranges from 0.9% to 1.5% with a constant strain rate of 10 −3 /s. The result of the fatigue tests showed a decrease in fatigue resistance with an increasing total strain range. The reduction of fatigue resistance was due to the effect of the total strain range and microstructure evolution during high temperature, such as brittle oxides cracking. At all testing conditions, the cyclic softening mechanism was observed as a function of the total strain range in the current high temperature condition. An analysis of low cycle fatigue resistance was performed using the Coffin-Manson relationship and the total strain energy density; it was found that Alloy 617 followed these relationships well. In addition, this study compared well with previous work reported in the literature for a similar testing condition. Post-fracture analysis on the fracture surfaces of failed specimens revealed a more severe damage cracking at the periphery of specimens due to the increase in the total strain range. The surface connected grain boundary cracks induced by oxidation were obvious at low strain range. Thus, the primary crack propagation occurred in transgranular mode from persistent slip bands.

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Section: Low Cycle Fatigue Damage Evaluationmentioning

confidence: 99%

Section: Low Cycle Fatigue Damage Evaluationmentioning

confidence: 99%

Effect of Strain Range on the Low Cycle Fatigue in Alloy 617 at High Temperature

Dewa

Kim

et al. 2017

Metals

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“…Moreover, Si strongly affects cyclic deformation behaviour of the material. 3,4 Emami et al 5 reported that A356 cast aluminium alloy exhibits cyclic hardening behaviour at room temperature in T5, T6 and modified T6 heat-treated conditions with a content of 7 wt% Si, and the hardening degree was related to strain range. Similarly, Elhadari et al 6 detected cyclic hardening behaviour of three cast Al-Si alloys with a content of 7 wt % Si.…”

Section: N O M E N C L a T U R Ementioning

confidence: 99%

“…On the other hand, Si composition in the form of hard and brittle eutectic silicon in aluminium alloys reduces mechanical strength such as ultimate tensile stress (UTS) and yield stress (YS). Moreover, Si strongly affects cyclic deformation behaviour of the material . Emami et al .…”

Section: Introductionmentioning

confidence: 99%

High‐temperature low‐cycle fatigue behaviour of a cast Al–12Si–CuNiMg alloy

Zhang

Zuo

Liu

2013

Fatigue Fract Eng Mat Struct

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The low‐cycle fatigue behaviour of a cast Al–12Si–CuNiMg alloy, with a high content of Si, is investigated at 200, 350 and 400 °C. The fatigue test results show that the alloy exhibits symmetrical hysteresis loops, moderate cyclic softening and higher fatigue resistance at higher temperature. The fracture surface analysis reveals that more tear ridges are formed at higher temperature, which strongly affect the fatigue resistance. Furthermore, evaluation of the material fatigue resistance using an energy‐based Halford–Marrow model indicates that the material's ability to absorb and dissipate plastic strain energy is enhanced as temperature increases.

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“…According to Song et al, 21 fatigue strength exponent b ranges from −0.07 to −0.15 and fatigue plastic exponent c ranges from −0.5 to −0.7 for most metallic materials. However, study on fatigue strength exponent b and fatigue ductility exponent c is very limited, especially for Al-Si casting alloys.…”

Section: Relating Fatigue Parameters With Microstructure Characterimentioning

confidence: 99%

Quantitative relationship between microstructure characteristics and fatigue parameters of A319 casting alloy

Liu

et al. 2019

Fatigue Fract Eng Mat Struct

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This paper describes a microstructure-based uniaxial strain-controlled fatigue life prediction model applied to A319 aluminum alloy which is widely used in automobile industry. The materials made with different casting conditions are characterized and quantified in terms of secondary dendrite arm spacing (SDAS), size, and aspect ratio of eutectic Si particles. Uniaxial low cycle fatigue tests have been performed on four groups of A319 alloy under different casting conditions in which cooling rate and Sr addition are variables. It is shown that the effect of various degrees of microstructure on the fatigue life and fatigue behavior is obvious. The first part of the paper is quantitatively characterizing the microstructure of samples to identify the influence of different casting conditions. With regard to mechanic properties, the tensile properties and fatigue behavior of samples are analyzed combining with microstructure. Finally, a microstructure-based Manson-Coffin-Basquin model is proposed to predict fatigue life of Al-Si alloy.

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Cyclic stress–strain behavior and low cycle fatigue life of cast A356 alloys

Cited by 51 publications

References 20 publications

Effect of Strain Range on the Low Cycle Fatigue in Alloy 617 at High Temperature

Effect of Strain Range on the Low Cycle Fatigue in Alloy 617 at High Temperature

High‐temperature low‐cycle fatigue behaviour of a cast Al–12Si–CuNiMg alloy

Quantitative relationship between microstructure characteristics and fatigue parameters of A319 casting alloy

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