Temperature Influence on Formability and Microstructure of AZ31B during Electric Hot Temperature-Controlled Incremental Forming

Zhang, Haoran; Chu, Xiaodong; Lin, Shudai; Bai, Huawei; Sun, Jiao

doi:10.3390/ma14040810

Cited by 9 publications

(7 citation statements)

References 25 publications

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“…Forming component with large wall angle causes more stretching of sheets and results in higher thinning rate. By increasing the temperature, thickness reduction gets increased and improves the sheet formability as observed by Zhang et al 16…”

Section: Resultsmentioning

confidence: 74%

Experimental investigations of warm incremental sheet forming process on magnesium AZ31 and aluminium 6061 alloy

Mohanraj

Elangovan

Kumar

2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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Aerospace, automobile and biomedical sector focuses on innovative rapid manufacturing processes, which can enable product customization, reduction in cost and manufacturing lead time. Aerospace, automobile and biomedical industries mostly use magnesium AZ31 and aluminium 6061 alloy materials for manufacturing of products because of their lower elastic modulus, excellent corrosion and fatigue resistance. The conventional sheet metal forming processes often require additional tools like punch and die and would not be economically viable to produce the customized structure for applications. An emerging forming technique known as warm incremental sheet forming process is evolved, which is capable of forming intricate, asymmetrical components at elevated temperature with localized deformation method. The characteristics of warm incremental sheet forming process suggest the need for the investigation of magnesium AZ31 and aluminium 6061 alloy materials for wide application of the process. Experimental investigation on the influence of process parameters on warm incremental sheet metal forming of magnesium AZ31 and aluminium 6061 alloy materials using electric heating technique was studied. Experimental results revealed that magnesium AZ31 and aluminium 6061 alloy sheet metal component formed with incremental depth of 0.1 mm, wall angle of 50° and temperature of 300°C showed maximum formability and thickness reduction with minimum geometrical deviation.

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Section: Resultsmentioning

confidence: 74%

Experimental investigations of warm incremental sheet forming process on magnesium AZ31 and aluminium 6061 alloy

Mohanraj

Elangovan

Kumar

2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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“…The grain growth at higher temperature (above 700 °C) is a key factor to produce constant straining work which approached sustainable forming force growth and thus improved the geometric accuracy and remained a stable thickness distribution. Other studies by Zhang et al [111] and Zhang et al [112] investigated temperature's influence on the formability, microstructure and fracture morphology of SPIF of magnesium materials. The studies revealed that the higher temperature increased the DRX, which reduced the forming force, increased formability and further reduced the risk of fracture.…”

Section: Microstructure Analysis For Spifmentioning

confidence: 99%

Heat-assisted incremental sheet forming for high-strength materials — a review

Attallah²,

Essa³

2022

Int J Adv Manuf Technol

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Single-point incremental forming (SPIF) is a sheet forming technique that deforms sheet materials incrementally to a designated shape. The process has shown high ability to deform low-strength materials for good geometrical accuracy and formability at room temperature. Deforming high-temperature alloys, such as high-strength steels and Ti-6AI-4 V, requires integrated heat sources to increase the ductility of the metal sheets for deformation. However, the integration of heating results in unpredictable thermal behaviours and impacts the formability, geometric accuracy, thickness distribution and surface quality. Considerable research efforts have invented different heating methods and designed novel tools and analytical modelling to resolve the limitations. The current challenge remains improving the localised and stable heating, functional tool design to reduce the thermal expansion and friction at the tool-surface contact area and the analysis of relationship between thermal and mechanical effects. This study aims to review the heating-assisted SPIF systems for high-strength alloy sheets to solve the current limitations. The method includes analysis of heating systems, tool, tool path design, lubricants and macro- and micro-numerical analyses. Additionally, the study aims to correlate the microstructural properties to the mechanical behaviours and subsequent effects on forming force, strain, springback, geometrical accuracy and surface quality.

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“…The authors have proven that smaller forming forces, and in particular smaller stretching forces, result in a lower curl height, while the aluminium alloys can be formed in a cold and in a warm state. Zhang et al [118] defined the temperature of 300 • C as a suitable temperature to form AZ31B magnesium alloy. The temperature was reached by electrically assisted ISF.…”

Section: Forming Forcesmentioning

confidence: 99%

“…Riaz et al [176] observed that an increase in the tool rotational speed increased the temperature and consequently affected the microstructures in incremental forming of aerospace alloy. Zhang et al [118] found that the forming depth and major true strain increased with reduced forming force at elevated temperature in electric hot incremental forming of AZ31 magnesium alloy sheet.…”

Section: Tool Assisted Heatingmentioning

confidence: 99%

Emerging Trends in Single Point Incremental Sheet Forming of Lightweight Metals

Trzepieciński

Oleksik

Pepelnjak

et al. 2021

Metals

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Lightweight materials, such as titanium alloys, magnesium alloys, and aluminium alloys, are characterised by unusual combinations of high strength, corrosion resistance, and low weight. However, some of the grades of these alloys exhibit poor formability at room temperature, which limits their application in sheet metal-forming processes. Lightweight materials are used extensively in the automobile and aerospace industries, leading to increasing demands for advanced forming technologies. This article presents a brief overview of state-of-the-art methods of incremental sheet forming (ISF) for lightweight materials with a special emphasis on the research published in 2015–2021. First, a review of the incremental forming method is provided. Next, the effect of the process conditions (i.e., forming tool, forming path, forming parameters) on the surface finish of drawpieces, geometric accuracy, and process formability of the sheet metals in conventional ISF and thermally-assisted ISF variants are considered. Special attention is given to a review of the effects of contact conditions between the tool and sheet metal on material deformation. The previous publications related to emerging incremental forming technologies, i.e., laser-assisted ISF, water jet ISF, electrically-assisted ISF and ultrasonic-assisted ISF, are also reviewed. The paper seeks to guide and inspire researchers by identifying the current development trends of the valuable contributions made in the field of SPIF of lightweight metallic materials.

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Temperature Influence on Formability and Microstructure of AZ31B during Electric Hot Temperature-Controlled Incremental Forming

Cited by 9 publications

References 25 publications

Experimental investigations of warm incremental sheet forming process on magnesium AZ31 and aluminium 6061 alloy

Experimental investigations of warm incremental sheet forming process on magnesium AZ31 and aluminium 6061 alloy

Heat-assisted incremental sheet forming for high-strength materials — a review

Emerging Trends in Single Point Incremental Sheet Forming of Lightweight Metals

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