Microstructural Evolution During the Homogenization of Al-Zn-Mg Aluminum Alloys

Eivani, A.R.; Zhou, Jie; Duszczyk, J.

doi:10.5772/34695

Cited by 6 publications

(3 citation statements)

References 55 publications

(116 reference statements)

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“…This decreases the corrosion rate. As a result, the efficiency increased, the corrosion rate decreased and the sacrificial anode has longer service time [14,15]. Although the weight-loss method is incomparable with the electrochemical method, both methods do not show any discrepancy in explaining the corrosion rate in this work.…”

Section: Microstructure Analysis and Hardness Testmentioning

confidence: 67%

The Influence of Homogenization on Corrosion Rate of Zinc as Sacrificial Anode for API 5L X65 Steel

Fitriani

Setyarini

Risonarta

2020

MECHTA

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Corrosion is a material degradation due to electrochemical reactions involving electrical current. Corrosion cannot be avoided but it can be managed. This work investigated the influence of holding time and temperature variation for the homogenization process of Zinc (Zn) alloy. This zinc alloy is used as a sacrificial anode to decrease the corrosion rate of API 5L X65 steel. The investigation was performed with 3 varied holding times of 2, 4 and 6 hours of homogenization process while the temperature was varied at 150, 250 and 350ºC. After that, a zinc alloy with a size of 40mm x 0.44 mm x 10 mm was connected to a cathode. Together with steel, both metals formed galvanic cells in this study. The metal with lower electricity potential became the anode and corroded. On the other hand, metal with higher electrical potential became the cathode and did not corrode. The lowest corrosion rate was obtained for homogenization at 150ºC and 2 hours holding time. At this condition, the corrosion rate decreased by 38.36%. This occurred since higher temperatures and longer holding time of Zinc homogenization resulted in bigger and rougher grains.

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Section: Microstructure Analysis and Hardness Testmentioning

confidence: 67%

The Influence of Homogenization on Corrosion Rate of Zinc as Sacrificial Anode for API 5L X65 Steel

Fitriani

Setyarini

Risonarta

2020

MECHTA

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“…Studying the deformability of various aluminum alloys, Zakharov [38] demonstrated the significant difference between AA7075 and AA6xxx during hot extrusion. The low deformability of AA7075 is due to its sensitivity to hot tearing defect [39]. This defect consists of micro-cracks on the external surface of the extrudates (Fig.…”

Section: Discussionmentioning

confidence: 99%

Plastic behavior-dependent weldability of heat-treatable aluminum alloys in friction stir welding

Ambrosio

Wagner

Dessein

et al. 2021

Int J Adv Manuf Technol

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The quality of friction stir welding joints is intimately related to the correct mixing of the stirred material. The material flow is strongly dependent on the plastic behavior of the welded alloy. For this reason, the friction stir weldability depends on the structure, microstructure and chemical composition of the base material. In this work, in-plane forces and acoustic emission signals were monitored while welding two heat-treatable aluminum alloys. The forces evolutions suggested possible continuous and intermittent material flow during friction stir welding depending on the welding parameters. The differences observed in the in-plane forces were corroborated by acoustic emission, confirming the modification in the material flow phenomenology. Therefore, differences observed in aluminum alloys' friction stir weldability are due to the plastic behavior at high temperature and medium-high strain rate. The higher the deformability of the aluminum alloys, the wider the weldability window in friction stir welding because of continuous material flow in an extended range of process parameters.

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“…These phases also negatively affect the hot workability and therefore the applicable ranges of process parameters during extrusion. These particles should be spheroidized by homogenization treatment [14].…”

Section: Hardness Measurementsmentioning

confidence: 99%

Microstructural and Mechanical Characterization of Al-0.80Mg-0.85Si-0.3Zr Alloy

Kahrıman

Zeren

2017

Archives of Foundry Engineering

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In this study, Al-0.80Mg-0.85Si alloy was modified with the addition of 0.3 wt.-% zirconium and the variation of microstructural features and mechanical properties were investigated. In order to produce the billets, vertical direct chill casting method was used and billets were homogenized at 580 °C for 6 h. Homogenized billets were subjected to aging practice following three stages: (i) solution annealing at 550 °C for 3 h, (ii) quenching in water, (iii) aging at 180 °C between 0 and 20 h. The hardness measurements were performed for the alloys following the aging process. It was observed that peak hardness value of Al-0.80Mg-0.85Si alloy increased with the addition of zirconium. This finding was very useful to obtain aging parameters for the extruded hollow profiles which are commonly used in automotive industry. Standard tensile tests were applied to aged profiles at room temperature and the results showed that modified alloy had higher mechanical properties compared to the non-modified alloy.

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Microstructural Evolution During the Homogenization of Al-Zn-Mg Aluminum Alloys

Cited by 6 publications

References 55 publications

The Influence of Homogenization on Corrosion Rate of Zinc as Sacrificial Anode for API 5L X65 Steel

The Influence of Homogenization on Corrosion Rate of Zinc as Sacrificial Anode for API 5L X65 Steel

Plastic behavior-dependent weldability of heat-treatable aluminum alloys in friction stir welding

Microstructural and Mechanical Characterization of Al-0.80Mg-0.85Si-0.3Zr Alloy

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