The Influence of Microstructure and Composition on the Machinability of Al‐Si Alloys

Zedan, Yasser; Samue, A.M.; Samuel, F. H.; Alkahtani, Saleh A.

doi:10.1002/9781118495292.ch125

Cited by 2 publications

(1 citation statement)

References 2 publications

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“…As said, the variables of the solidification process and the resulting structures can significantly influence the machinability of materials, and recent studies have confirmed that evaluating the solidification process as an initial step in verifying the ease or difficulty of machining a material can guarantee not only improvements in the final state of the part and cheaper costs [18,19,22,23], but even though the use of this information in the industrial manufacturing processes of parts produced with Sn-Sb alloys can avoid unnecessary expenses resulting in the best mechanical benefit of the manufactured material, including the limitations of toxicity, were not found analyzes that relate solidification thermal parameters and structural characteristics with machinability in this alloy system.…”

Section: Introductionmentioning

confidence: 95%

Influence of Solidification Parameters and Solute Content on the Machinability of Two Lead-Free Babbit Metals

Costa Maciel

2023

Current Trends in Eng Sc

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Studies suggest that white metal Sn-Sb alloys are the most commonly type of babbit metal used in industry. However, it is necessary to evaluate manufacturing characteristics and solute contents that leads the best machining conditions. This work presents a correlation between solidification parameters and machinability of Sn-2.0wt%Sb and Sn-5.5wt%Sb alloys, solidified in a horizontal directional device, evaluating the influence of solute content on these results. Cutting temperatures were measured in dry necking processes along the length of the ingot. It was observed that the reverse cellular-dendritic transition influenced the cutting temperature results. The range of cell and dendrite spacings varies approximately from 40 to 330 μm on the Sn-2.0wt%Sb alloy and from 15 to 240 μm on the Sn-5,5wt%Sb alloy. In the cellular region, higher values are found for the Sn-5.5wt%Sb alloy, but in the dendritic region, these values were higher for the Sn-2.0wt%Sb alloy.

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Section: Introductionmentioning

confidence: 95%

Influence of Solidification Parameters and Solute Content on the Machinability of Two Lead-Free Babbit Metals

Costa Maciel

2023

Current Trends in Eng Sc

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Effect of Grain Refiners and/or Modifiers on the Microstructure and Mechanical Properties of Al-Si Alloy (LM6)

Prema

Chandrashekharaiah²,

Begum

2019

MSF

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Grain refinement is one of the most important and popular melt treatment process for Al-Si alloy casting. Microstructure and mechanical properties of commercially available Aluminium Silicon alloy LM6 can be improved with the addition of grain refiners and modifiers as these provide technical and economic advantages. This paper is an effort to study the effects of addition of grain refiners and modifiers to the eutectic Al – Si alloy LM6. Commercially available Al - Si alloy LM6 (eutectic = 12% Si) is grain refined with Al-5Ti-1B and Al-3B; and modified with Al-10Sr master alloys. These were added individually and then tested for its unique mechanical properties such as ultimate tensile strength, hardness and wear; which are co-related with the machining tests such as turning, surface roughness and drilling. The test results are compared with microstructure of the samples observed through SEM.The mechanical properties of this alloy can be altered after addition of master alloys, which in turn alter the grain size. Thus the results conclude that the mechanical properties of Al-Si alloys in general are controlled by a number of principal microstructural features. A fine grain size is desirable, leading to improvement of mechanical properties.

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The Influence of Microstructure and Composition on the Machinability of Al‐Si Alloys

Cited by 2 publications

References 2 publications

Influence of Solidification Parameters and Solute Content on the Machinability of Two Lead-Free Babbit Metals

Influence of Solidification Parameters and Solute Content on the Machinability of Two Lead-Free Babbit Metals

Effect of Grain Refiners and/or Modifiers on the Microstructure and Mechanical Properties of Al-Si Alloy (LM6)

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