Tensile and fatigue properties, machinability and machined surface roughness of Al-Si-Cu alloys

Baloš, Sebastian; Rajnović, Dragan; Šidjanin, Leposava; Savković, Borislav; Kováč, Pavel; Janjatovic, Petar

doi:10.1590/s1517-707620190003.0772

Cited by 5 publications

(4 citation statements)

References 19 publications

(33 reference statements)

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“…This type of fatigue surface is found in polycrystalline materials having the transgranular fracture, with the most active slip planes dictating the fracture itself [23]. To be intrduced with the fatigue, tensile as well as some other properties of another material such as Al Si Cu alloys it is recommended to have an insight in [24]…”

Section: A Brief Review Of the Microstructure Analysis Of The Tested ...mentioning

confidence: 99%

S235JRC+C Steel Response Analysis Subjected to Uniaxial Stress Tests in the Area of High Temperatures and Material Fatigue

Brnić¹,

Brčić²,

Baloš³

et al. 2021

Sustainability

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Knowledge of the properties and behavior of materials under certain working conditions is the basis for the selection of the proper material for the design of a new structure. This paper deals with experimental investigations of the mechanical properties of unalloyed high quality steel S235JRC + C (1.0122) and its behavior under conditions of high temperatures, creep and mechanical fatigue. The response of the material at high temperatures (20–700 °C) is shown in the form of engineering stress-strain diagrams while that at creep behavior (400–600 °C) is shown in the form of creep curves. Furthermore, based on uniaxial fully reversed mechanical fatigue tests (R=−1), a stress-life (S-N) fatigue diagram has been constructed and the fatigue (endurance) limit of the material is calculated The experimentally determined value of tensile strength at room temperature is 534 MPa. The calculated value of the fatigue limit, also at room temperature, using the modified staircase method and based on the mechanical fatigue tests data, is 202 MPa. With regard to creep resistance, steel 1.0122 can be considered creep-resistant only at a temperature of 400 °C and at an applied stress not exceeding 50% of the yield strength corresponding to this temperature.

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Section: A Brief Review Of the Microstructure Analysis Of The Tested ...mentioning

confidence: 99%

S235JRC+C Steel Response Analysis Subjected to Uniaxial Stress Tests in the Area of High Temperatures and Material Fatigue

Brnić¹,

Brčić²,

Baloš³

et al. 2021

Sustainability

Self Cite

View full text Add to dashboard Cite

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“…A higher quantity of Si forms a large amount of these intermetallics since plate-type shapes and very brittle which spread the cracks. These types of alloy consist of different types of intermetallic phases of different shapes and sizes, yet plate-type shapes intermetallics are very harmful as they may destroy the mechanical properties [24,25].…”

Section: Sem Fracture Surfacementioning

confidence: 99%

Role of Si on machined surfaces of Al- based automotive alloys under varying machining parameters

Razin

Ahammed

Nur

et al. 2022

Journal of Mechanical and Energy Engineering

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Al-based automotive alloys with different level of Si content has been conducted on the characterization of machined surfaces in terms of roughness, temperature, chips formation as well as microstructue evaluation under different machining conditions. For this experiment a shaper machine with HSS single point V-shaped cutting tool is used at different cutting speed and depth of cut. The experimental results show that the surface roughness of the alloys decresess with cutting speed and depth of cut but it is more prominent on cutting speed. It is because of high cutting speed is more associated with the higher cutting temperatur and softening the work material leading to better surface finish. Higher Si added alloys shows the better surface finish due to formation of different intermettalics as more brittle. For brittle and higher hardness it produces the higher temperature during machining. During machining relatively curly and short chips are form by the high Si added alloy becase of its low elongation properties. Fracture surfaces of higher Si added alloy display more crack propagation obtained by the plate-like Si rich intermetallics.

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“…The quantity of cleavage facets also augmented into fracture surfaces. There are different types of intermetallic phases observed in this type of alloys as it contents different level of alloying elements but plate-type shapes intermetallics are the most damaging to mechanical properties [25,26].…”

Section: Microstructural Observationsmentioning

confidence: 99%

Characterization of Machined Surfaces of Al-based Automotive Alloys with Different Levels of Si Content under Up Milling and Down Milling Operation

Ahammed¹,

Razin²,

Al-Nur³

et al. 2022

AMS

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This paper aims to investigate and compare the characteristics of machined surfaces and chips formation of aluminium-based automotive alloys with varying silicon content. The milling operations are performed using horizontal milling machine under two peripheral up milling and down milling methods with an HSS slab milling cutter. The experiment has conducted for different cutting speeds in dry condition while the depth of cut and machining feed are kept constant throughout the evaluation. The study reveals that the down-milled surface has higher hardness and better surface finish resulting in lower roughness as the cutting force is compressive in nature. On the contrary, the up-milled surface has lower hardness and micro cracks on it, which resulted in relatively higher surface roughness as the cutting force is tensile shear in nature. In addition, the surface hardness increases with the increment of silicon content in the alloys for both milling methods for the presence of hard Si rich intermetallics. The chips produced during up milling are shorter whereas the chips produced during down milling are longer for creation of higher temperature and pressure. Higher Si added alloy shows the curly like chips for its lower elongation behaviour. Fracture behaviour of higher Si alloy also confirms crack propagation obtained by the massive cleavage of the brittle and plate-types Si rich intermetallics.

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Tensile and fatigue properties, machinability and machined surface roughness of Al-Si-Cu alloys

Cited by 5 publications

References 19 publications

S235JRC+C Steel Response Analysis Subjected to Uniaxial Stress Tests in the Area of High Temperatures and Material Fatigue

S235JRC+C Steel Response Analysis Subjected to Uniaxial Stress Tests in the Area of High Temperatures and Material Fatigue

Role of Si on machined surfaces of Al- based automotive alloys under varying machining parameters

Characterization of Machined Surfaces of Al-based Automotive Alloys with Different Levels of Si Content under Up Milling and Down Milling Operation

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