A Review of Super plastic forming

Chatterjee, Ritam; Mukhopadhyay, J.

doi:10.1016/j.matpr.2017.12.014

Cited by 11 publications

(5 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In 1964, Backofen et al formed the first AlZn eutectoid alloy 'bubble' by SPF [19] and Johnson formed the world's first titanium part using SPF in 1968 [20], which thereafter opened the 50 years SPF era for forming complex thin-walled components from titanium alloys [21]. SPF normally requires fine equiaxed microstructure (<10 µm), high deformation temperature (>0.5 Tm) and low strain rate (<0.001 s −1 ).…”

Section: Behaviors and Mechanisms Of Hot Deformation Under Non-superp...mentioning

confidence: 99%

High-efficiency forming processes for complex thin-walled titanium alloys components: state-of-the-art and perspectives

Wang

Zheng

et al. 2020

Int. J. Extrem. Manuf.

View full text Add to dashboard Cite

Complex thin-walled titanium alloy components play a key role in the aircraft, aerospace and marine industries, offering the advantages of reduced weight and increased thermal resistance. The geometrical complexity, dimensional accuracy and in-service properties are essential to fulfill the high-performance standards required in new transportation systems, which brings new challenges to titanium alloy forming technologies. Traditional forming processes, such as superplastic forming or hot pressing, cannot meet all demands of modern applications due to their limited properties, low productivity and high cost. This has encouraged industry and research groups to develop novel high-efficiency forming processes. Hot gas pressure forming and hot stamping-quenching technologies have been developed for the manufacture of tubular and panel components, and are believed to be the cut-edge processes guaranteeing dimensional accuracy, microstructure and mechanical properties. This article intends to provide a critical review of high-efficiency titanium alloy forming processes, concentrating on latest investigations of controlling dimensional accuracy, microstructure and properties. The advantages and limitations of individual forming process are comprehensively analyzed, through which, future research trends of high-efficiency forming are identified including trends in process integration, processing window design, full cycle and multi-objective optimization. This review aims to provide a guide for researchers and process designers on the manufacture of thin-walled titanium alloy components whilst achieving high dimensional accuracy and satisfying performance properties with high efficiency and low cost.

show abstract

Section: Behaviors and Mechanisms Of Hot Deformation Under Non-superp...mentioning

confidence: 99%

High-efficiency forming processes for complex thin-walled titanium alloys components: state-of-the-art and perspectives

Wang

Zheng

et al. 2020

Int. J. Extrem. Manuf.

View full text Add to dashboard Cite

show abstract

“…One of the modern and progressive variants of superplastic forming is the molding of shells by the pressure of a gaseous medium formed as a result of a change in the aggregate state of thermo-metastable substance (sublimate or destruct agent) in the hermetic die cavity [8,9]. Based on this kind of gas forming, in this work an attempt is made to determine the optimal power regime in relation to free forming of dome-shaped shells due to the controlled sublimation in the die cavity.…”

Section: Fig 1 Stages Of Gas Superplastic Formingmentioning

confidence: 99%

“…Superplastic forming of spherical shells from sheets is performed by a gas medium, and aluminum and titanium based alloys are preferably formed [1][2][3][4][5]. The application of a gas medium (inert gases mainly [6][7][8]) is associated with the use of compressor plants and pipelines that are hermetically sealed into forming dies [8,9]. An important advantage of superplastic forming is not the use of press equipment and the elimination of a number of problems in the area of ensuring the accuracy of the "press-die" system and occupation safety [10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…An important advantage of superplastic forming is not the use of press equipment and the elimination of a number of problems in the area of ensuring the accuracy of the "press-die" system and occupation safety [10][11][12][13][14]. Despite the study of the processes of gas superplastic forming [1,3,7,8,15] and the progress in the methods of material heating before forming [16,17], the technical realization of multistage molding operations, especially with respect to the required load (force) regimes, remains very complicated [7,8,[18][19][20]. Replacement of the external gaseous medium to the internal gas medium (that created directly in the die cavity) will significantly facilitate the technological realization of the gas superplastic forming (Fig.…”

Section: Introductionmentioning

confidence: 99%

“…Replacement of the external gaseous medium to the internal gas medium (that created directly in the die cavity) will significantly facilitate the technological realization of the gas superplastic forming (Fig. 1), while it is obvious that the methods for taking into account the material plastic properties and the designing of the passes will remain the same [5,6,8,15,[21][22][23]. Difficulties are expected at the stage of calculation of load (force) behavior, depending on the method of creating internal die cavity gas pressure.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Mathematical model development for superplastic forming of sheet shells by subliming agent gas pressure

Аніщенко

Kukhar

Agarkov³

et al. 2019

E3S Web Conf.

View full text Add to dashboard Cite

The authors presented in the article an analytical model of superplastic forming of spherical shells by pressure of the gas (gaseous phase) created upon sublimation of sublimate agent. Sublimate was placed in a hermetic cavity between the workpiece and the presser cover and heated to the temperature of its sublimation. The model uses the Berthelot equation for the state of real gases, the Bernoulli relation, and the F. Jovane equations for adjusting the shell forming pressure as a function of its relative height, the heat balance equation for the sublimation process, and the Clausius-Clapeyron relation for sublimation of substances. The authors showed that the superplastic forming pressure control can be effectively applied by the way of change in the forming temperature relative to temperature of sublimate agent sublimation. The experimental results of forming of shells from aluminum alloys AlMg3Mn, AlMg5Mn and AlMg6Mn, confirming theoretical calculations of the velocity and temperature conditions of superplastic forming by the sublimating agent pressure.

show abstract

Research on the local formability of Al-Mg-Si alloy sheet during rapid hot gas forming

Fan

Chen

Lin

et al. 2020

Int J Adv Manuf Technol

View full text Add to dashboard Cite

A Review of Super plastic forming

Cited by 11 publications

References 6 publications

High-efficiency forming processes for complex thin-walled titanium alloys components: state-of-the-art and perspectives

High-efficiency forming processes for complex thin-walled titanium alloys components: state-of-the-art and perspectives

Mathematical model development for superplastic forming of sheet shells by subliming agent gas pressure

Research on the local formability of Al-Mg-Si alloy sheet during rapid hot gas forming

Contact Info

Product

Resources

About