Effect of homogenization temperature on mechanical and tribological properties of LM4 cast alloy

Mohapatra, Subinaya; Ilangovan, S.; Shanmugasundaram, A.

doi:10.1016/j.matpr.2020.08.202

Cited by 3 publications

(4 citation statements)

References 8 publications

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“…Al-Si + SiC p composites were subjected to age hardening treatment, and results revealed that heat treated composite displayed better hardness (148.3 VHN) when compared to as-cast composite and alloy. Mohapatra et al 3 , performed homogenization treatment (400, 450, and 500°C for 10 h) on LM4 alloy and calculated hardness at outer, middle, and inner regions of alloy. Results revealed that before homogenization, the outer region exhibited the highest hardness (101 HV) compared to other regions.…”

Section: Hardness Variation In Various Al-si Compositesmentioning

confidence: 99%

“…Because of their unique qualities, aluminium alloys have been utilized in the aircraft industry with a substantial substitution of steel components 1,2 . Al-Si alloys are among the various aluminium alloys widely utilized in the production of cylinder heads, pistons, and valve lifters 3 . Hypoeutectic Al-Si alloys have been widely researched and are regarded as good alternatives for automotive components because of their low density, good formability, and outstanding wear resistance 4 .…”

Section: Basic Introductionmentioning

confidence: 99%

“…Hypoeutectic Al-Si alloys have been widely researched and are regarded as good alternatives for automotive components because of their low density, good formability, and outstanding wear resistance 4 . LM4 alloy (hypoeutectic alloy) offers a remarkable blend of strength, low coefficient of thermal expansion at increased temperatures, and great wear resistance 5 and can be used in clutches, tool handles etc 3 . In comparison to other aluminium alloys, LM4 aluminium alloy has higher mechanical strength and greater wear resistance 6 .…”

Section: Basic Introductionmentioning

confidence: 99%

“…It is commonly recognized that the obtained effective grain refining is related to the TiB 2 particles' potential heterogeneous nucleation sites and the significant growth limitation effects of the solute Ti (dissolved from Al 3 Ti) for the α-Al crystals 4 . Age hardening heat treatment methods significantly impact the mechanical properties of Al-Si alloys 3 . Heat treatment, particularly solution treatment, causes the trapped gas to expand significantly, forming surficial blisters within large porosities, resulting in weak and dispersed mechanical characteristics 10 .…”

Section: Basic Introductionmentioning

confidence: 99%

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Artificial Neural Network for Predicting Hardness of Multistage Solutionized and Artificially Aged LM4 + TiB2 Composites

et al. 2022

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Aluminium casting alloy LM4 (EN 1706 AC-45200) composites with TiB 2 (1, 2, and 3 wt.%) as reinforcements were produced using the two-stage stir casting method. OM and SEM study shows uniform and homogeneous reinforcement distribution in LM4 + TiB 2 composites. As-cast composites were subjected to single-stage solution treatment at 520°C for 2 h and multistage solution treatment at 495 and 520°C for 2 and 4 h, followed by hot water quenching at 60°C and aging at 100 and 200°C for different time intervals. The hardness of as-cast and artificially aged composites were compared in both conditions. Compared to as-cast LM4 alloy, 20-45% improvement in hardness was observed for LM4 + TiB 2 as-cast composites. 60-150% improvement in hardness was observed in artificially aged LM4 + 3 wt.% TiB 2 composites when aged at 100 and 200°C during peak aged conditions. TEM images confirmed the presence of primary strengthening solute-rich phases after age hardening treatment such as θ'-Al 2 Cu and θ"-Al 3 Cu, which are responsible for hardness increment. An artificial neural network (ANN) model was created to predict the hardness trend of these composite samples using MATLAB R2021b, and results proved that the ANN model developed can be utilized as an effective tool to predict the hardness of treated composite samples.

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Section: Hardness Variation In Various Al-si Compositesmentioning

confidence: 99%