Effect of friction stir processing conditions on fatigue behavior and texture development in A356-T6 cast aluminum alloy

Tajiri, Akiko; Uematsu, Yoshihiko; Kakiuchi, Toshifumi; Tozaki, Yasunari; Suzuki, Yosuke; Afrinaldi, Angga

doi:10.1016/j.ijfatigue.2015.06.001

Cited by 52 publications

(18 citation statements)

References 26 publications

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“…The ductility of 7.47 % meanwhile is largely due to the refinement of the microstructure and the reduction/elimination of porosities. Other studies also have found that the tensile properties and fatigue of cast aluminium silicon alloys improved with refined microstructure, and reducing casting defect such as porosities size and density [9,17,18]. Sample processed at 1000 rpm shows higher tensile strength and elongation 184MPa / 7.47 % compared with the other samples.…”

Section: Resultsmentioning

confidence: 82%

Influence of Friction Stir Process on Microstructure and Tensile Properties of LM28 Hypereutectic Al-Si Alloy

Abdulmalik

Ahmad²

2018

IJIE

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This paper reports an investigation of the influence of friction stir processing (FSP) on the microstructure modification, tensile properties and hardness of as cast hypereutectic LM28 aluminium silicon (Al-Si) alloy, aimed to decrease Silicon particles size, porosity, and enhancing tensile properties. Intense plastic deformation foisted by FSP resulted in a remarkable breaking up of the coarse eutectic and primary silicon particles into smaller ones, and closure of porosity. The area sizes of the fragmented Si particles decreased from 155.1 μm² to around 49.4 μm², aspect ratio of about 2.86 in the as cast condition decreased to around 1.63 after FSP. Porosity was also drastically reduced from 94 µm ECD, in the as cast condition to as low as 7.1 µm ECD. The strength and ductility of the alloy increased simultaneously after FSP. The increase in the tensile strength and ductility values after FSP, as compare to the as cast alloy was around 1.56, and 4.38 times respectively. The LM28 FS-processed alloy displayed an increase in quality index of around 1.97 times higher, than that of the as-cast alloy. The hardness of the alloy increased from 64.6 HV for the as-cast alloy to about 85.74 HV after FSP. Enhancement in all the properties was largely related to the pronounced changes of the shape, area size and distribution of the silicon particles along with the reduction of porosity FSP.

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Section: Resultsmentioning

confidence: 82%

Influence of Friction Stir Process on Microstructure and Tensile Properties of LM28 Hypereutectic Al-Si Alloy

Abdulmalik

Ahmad²

2018

IJIE

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“…Unreasonable process parameters are likely to make defects. The summary of stress amplitude-half of the stress range ∆σ corresponding to 95% survival rate-for N f = 10 [6] with the optimal process parameters is shown in Table 1 [24,[39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55][56].…”

Section: Process Parametersmentioning

confidence: 99%

Fatigue of Friction Stir Welded Aluminum Alloy Joints: A Review

Gao

2018

Applied Sciences

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The application fields of friction stir welding technology, such as aerospace and transportation, has high safety requirements and fatigue is the dominant failure mode for weldments. It is of great significance to understand the fatigue properties of friction stir welded joints. This paper provides an overview of the fatigue mechanism, influencing factors, crack growth rate, and fatigue life assessment. It is found that the fatigue performance of friction stir welded joints can be affected by welding process parameters, test environment, stress ratio, residual stress, and weld defect. The optimized process parameters can produce high quality weld and increase the weld fatigue life. Laser peening is an effective post weld treatment to decrease fatigue crack growth rate and improve material fatigue life.

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“…Pasebani et al [15] studied the effect of tool rotation rate on microstructure of friction stir processed 2024Al alloy and found significant change in size and morphology of the constituent particles after FSP. After studying the effect of friction stir processing conditions on A356-T6 cast aluminum alloy, Tajiri et al concluded that lower rotational speed led to better results enhancing fatigue resistance and eliminating casting defects [16].…”

Section: Introductionmentioning

confidence: 99%

Influence of friction stir process parameters on surface quality of aluminum alloy A2017

et al. 2017

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Effect of friction stir processing conditions on fatigue behavior and texture development in A356-T6 cast aluminum alloy

Cited by 52 publications

References 26 publications

Influence of Friction Stir Process on Microstructure and Tensile Properties of LM28 Hypereutectic Al-Si Alloy

Influence of Friction Stir Process on Microstructure and Tensile Properties of LM28 Hypereutectic Al-Si Alloy

Fatigue of Friction Stir Welded Aluminum Alloy Joints: A Review

Influence of friction stir process parameters on surface quality of aluminum alloy A2017

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