A study of post-form static and fatigue properties of superplastic 7475-SPF and 5083-SPF aluminium alloys

Chen, Zhiping; Thomson, Peter Frederic

doi:10.1016/s0924-0136(03)00867-7

Cited by 12 publications

(7 citation statements)

References 39 publications

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“…Superplasticity is exhibited by materials only in a narrow strain rate range with an optimum value unique to each material (Chen and Thomson, 2004). This factor makes it essential to determine the pressure loading history in order to maintain the maximum strain rate near the optimum value throughout the whole forming process.…”

Section: Pressure Control Algorithmsmentioning

confidence: 99%

“…Table 1 records the material properties associated with the material modeling and also the optimum strain rate reported for this material (Chen and Thomson, 2004). Tensile specimens were tested at the superplastic forming temperature (515 • C) to determine the flow stress and strain-rate index (Chen and Thomson, 2004). In Model 1, the circular blank has an initial radius of 50 mm, an initial thickness of 2 mm and is to be hydroformed without a die (superplastic bulge forming).…”

Section: Finite Element Modelingmentioning

confidence: 99%

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Optimization of superplastic hydroforming process of Aluminium alloy 5083

Hojjati

Zoorabadi

Hosseinipour

2008

Journal of Materials Processing Technology

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Section: Pressure Control Algorithmsmentioning

confidence: 99%

Section: Finite Element Modelingmentioning

confidence: 99%

Optimization of superplastic hydroforming process of Aluminium alloy 5083

Hojjati

Zoorabadi

Hosseinipour

2008

Journal of Materials Processing Technology

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“…Thickness distribution of superplastically formed aircraft skin components was investigated by Chen et al. 16 Verma et al. 17 experimentally studied the post-formed properties of the Cadillac STS decklid inner panel formed using quick plastic forming (QPF).…”

Section: Introductionmentioning

confidence: 99%

Multi-criteria decision making approach for selecting the best friction distribution in superplastic forming of a vehicle component

Shojaeefard

Khalkhali

Miandoabchi

2014

Proceedings of the Institution of Mechanical Engineers, Part E:

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In the superplastic forming process, the die-sheet interface friction distribution affects the required forming time and thickness uniformity of the formed part. This study undertakes the numerical investigation of applying variable interfacial friction distribution in superplastic forming of AA5083 aluminum alloy into a vehicle closure component using the commercial software, ABAQUS/Implicit. The die surface is divided into seven regions and a set of finite element simulations of the hot gas-pressure forming process are performed with focus on the effects of applying different friction coefficients at those regions on the forming time and thinning factor. For selecting the trade-off optimum friction distribution, forming time and thinning factor are calculated for each friction condition to form an evaluation matrix. Finally, TOPSIS as a multi-criteria decision making method is employed to select the best compromise friction distribution.

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“…In prior process [3][4][5], the mould and the blank were put into the furnace together, so that only less than 10% heat was functioned on the blank, and the other was wasted on the mould, the furnace body and other parts, and consequently resulted in large energy waste. Moreover, in the furnace, a mass of parts must be heated to homogeneous and elevated temperature by means of heat radiation which is time-consuming, so long heating time (tens of minutes or several hours according to different materials and processes) is needed, which certainly courses the low efficiency.…”

Section: Introductionmentioning

confidence: 99%

Superplastic forming of AZ31 magnesium alloy using resistance heating

Zhang

2011

Proceedings of 2011 6th International Forum on Strategic Technology

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Superplastic forming using resistance heating (SPFRH) is developed to solve the problems of high energy consumption and low efficiency. In this process, the sheet is connected in series with a high current circuit and heated directly by the electrical resistance. The heating rate of the sheet is controlled by current density, and the ceramics mould is employed to avoid the heating current being dispersed. The applicability of resistance heating to superplastic forming is evaluated by the heating and forming experiments, and the AZ31 magnesium alloy samples are formed successfully. By this method, the superplastic forming with the merits of high efficiency and low energy consumption becomes possible.

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A study of post-form static and fatigue properties of superplastic 7475-SPF and 5083-SPF aluminium alloys

Cited by 12 publications

References 39 publications

Optimization of superplastic hydroforming process of Aluminium alloy 5083

Optimization of superplastic hydroforming process of Aluminium alloy 5083

Multi-criteria decision making approach for selecting the best friction distribution in superplastic forming of a vehicle component

Superplastic forming of AZ31 magnesium alloy using resistance heating

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