Numerical Study of Radiation and Temperature Phenomena for Improved Super-Plastic Sheet Metal Forming

2012 ◽  
Vol 735 ◽  
pp. 170-179
Author(s):  
Michal Mis ◽  
Richard Hall ◽  
Julian Spence ◽  
Nwabueze Emekwuru ◽  
Kevin Kibble
Keyword(s):  
Numerical Study ◽  
Process Efficiency ◽  
Work Piece ◽  
Heat Management ◽  
Selective Heating ◽  
Super Plastic ◽  
Plastic Forming ◽  
Improved Design ◽  
Super Plastic Forming ◽  
Accurate Temperature Control

In most super-plastic forming (SPF) investigations the focus is usually on the material aspects. In this paper the authors develop a model to improve the heat management of SPF. The model presented improved process possibilities. The improved design involves selective application of heat to the material. Final product shape can easily be controlled by accurate temperature control of the work piece. Numerical simulation has been carried out on various components including a ‘top hat shape‘ and a heat exchanger part. Simulation comparisons are made between selective heating and conventional processing, where all of the formed material is at the same temperature, and greater process efficiency of the selective heating approach is demonstrated.

Comparison of Experimental and Numerical Study on Superplastic Forming of Rectangular Box Shape using AZ31 Magnesium Alloy Sheet

2020 ◽  
Vol 12 (2) ◽  
Author(s):  
G. Prabaharan ◽  
S. Ramesh Babu ◽  
K. Parthasarathy ◽  
K.A. Rajkumar
Keyword(s):  
Magnesium Alloy ◽  
Numerical Study ◽  
Superplastic Forming ◽  
Alloy Sheet ◽  
Grain Structure ◽  
Az31 Magnesium Alloy ◽  
Dome Height ◽  
Super Plastic ◽  
Plastic Forming ◽  
Super Plastic Forming

Super plastic forming has become a feasible process in manufacturing aircraft and automobile parts. Super-plasticity is a property of certain metallic materials which enable them to attain very high elongations (100% and above) without necking under certain conditions. This is assigned to the viscous behaviour exhibited by certain metals and alloys with very fine and stable grain structure at temperatures above half of the melting point. The experimental setup was developed for finding the parametric influences and their effects on super plastic forming. AZ31 Magnesium alloy is most suitable materials for producing more complex shapes using super plastic forming method. The experimental values of pressure, temperature and the thinning, dome height of the super plastically formed specimens were analysed.

INCONEL ALLOY 718SPF

Alloy Digest ◽  
1994 ◽  
Vol 43 (11) ◽  
Keyword(s):  
Base Alloy ◽  
Low Flow ◽  
Inconel Alloy ◽  
Gamma Prime ◽  
Size Stability ◽  
Super Plastic ◽  
Plastic Forming ◽  
Super Plastic Forming ◽  
Grain Size Stability ◽  
Prime Phase

Abstract INCONEL alloy 718SPF is an age-hardenable austenitic material whose strength is largely dependent on the precipitation of a gamma prime phase following heat treatment. The base alloy, however, possesses two-essential characteristics for super-plastic forming; grain size stability over time and temperature; and a combination of low flow stress and significant ductility. This datasheet provides information on composition, physical properties, microstructure, hardness, elasticity, and tensile properties as well as creep and fatigue. It also includes information on low and high temperature performance. Filing Code: Ni-471. Producer or source: Inco Alloys International Inc.

scholarly journals FINITE-ELEMENT MODELING OF SUPER-PLASTIC FORMING PROCESSES

2017 ◽  
Vol 18 (3) ◽  
pp. 55-71
Author(s):  
Angelina Khalitovna Akhunova ◽  
Radik Rafikovich Mulyukov ◽  
Rinat Vladikovich Safiullin
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Element Modeling ◽  
Super Plastic ◽  
Plastic Forming ◽  
Super Plastic Forming

scholarly journals Development of numerical tool for hybrid manufacturing process for titanium sheet metal forming

2020 ◽  
Vol 321 ◽  
pp. 04026
Author(s):  
Mohamed ACHOURI
Keyword(s):  
Aerospace Industry ◽  
Material Behavior ◽  
Hot Forming ◽  
Simulation Tool ◽  
Forming Process ◽  
Simulation Strategy ◽  
Super Plastic ◽  
Plastic Forming ◽  
Aeronautical Industry ◽  
Super Plastic Forming

The use of titanium in the aerospace industry has grown considerably in recent years in conjunction with the development of composite aircraft. In this way, improving titanium forming has become an important issue for the industry, both for productivity objectives and the ability to deliver basic parts according to the needs imposed by aircraft delivery rates, as well as for cost objectives. Currently, hot forming of titanium parts can be achieved through two processes: Super-plastic forming (SPF) or Hot Forming (HF). The aeronautical industry wanted to develop an innovative process for the manufacture of titanium parts by coupling the HF and SPF processes in order to exploit the advantages of these two technologies. The development of a mixed HF / SPF process will thus not only improve the rates and allow better control of the quality of the formed parts (thickness homogeneity), but also, by allowing forming at lower temperatures, this hybrid process presents a large interest at the energy plan. The study was devoted to the development of a hybrid HF/SPF process, carried out at a common temperature, allowing the “pre-forming” of the part in HF mode and the “calibration” of the part in SPF mode, while respecting a global cycle time compatible with the objectives of the aerospace industry and guaranteeing the quality expected for the final complex part. Improving the performance of the final part requires a development of numerical simulation tool of the forming process. The available simulation tool (ABAQUS/ Standard) must be adapted to define the best simulation strategy according to the simulated parts; moreover, it remains imperative to determine the input data (material behavior laws of titanium alloys) adapted to the cases to be treated (strain rate and process temperature).

A Review of Super plastic forming

2018 ◽  
Vol 5 (2) ◽  
pp. 4452-4459 ◽  
Author(s):  
Ritam Chatterjee ◽  
Jyoti Mukhopadhyay
Keyword(s):  
Super Plastic ◽  
Plastic Forming ◽  
Super Plastic Forming

Modeling the Super Plastic Forming of a Multi-Sheet Diffusion Bonded Titanium Alloy Demonstrator Fan Blade

2012 ◽  
Vol 735 ◽  
pp. 215-223 ◽  
Author(s):  
Paul Wood ◽  
Muhammad Jawad Qarni ◽  
Paul L. Blackwell ◽  
Vladimir Cerny ◽  
Phillip Brennand ◽  
...  
Keyword(s):  
Finite Element ◽  
Titanium Alloy ◽  
Inner Core ◽  
Alloy Sheet ◽  
The Core ◽  
Super Plastic ◽  
Plastic Forming ◽  
Fan Blade ◽  
Super Plastic Forming ◽  
2D And 3D

The paper describes a finite element method in 2D and 3D to simulate the super plastic forming of a demonstrator jet engine fan blade made from Titanium alloy sheet. The fan blade is an assembly of three sheets in which a single inner (core) sheet is diffusion bonded to the two outer (skin) sheets at prescribed zones, which is then super-plastically formed to a desired fan profile. In the model, the diffusion bonded zones between the core and skin sheets are simulated using tied interfaces. The thickness of each skin sheet is not uniform and significant change in thickness can occur over a short distance as well as gradually over the entire skin sheet. The thickness of the core sheet which is smaller than the thickness of each skin sheet remains uniform. The paper describes the design for a scaled-down demonstrator fan blade and model build process. Selected results and evaluations of finite element simulations are presented and discussed.

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