Simulation And Experimental Investigation Of Hot Forming Of Aluminum Alloy Aa5182 With Application Towards Warm Forming
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Simulation And Experimental Investigation Of Hot Forming Of Aluminum Alloy Aa5182 With Application Towards Warm Forming
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Author : John Thomas Lee (master of science in engineering.)
language : en
Publisher:
Release Date : 2012
Simulation And Experimental Investigation Of Hot Forming Of Aluminum Alloy Aa5182 With Application Towards Warm Forming written by John Thomas Lee (master of science in engineering.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.
This study focuses on hot and warm forming properties of aluminum alloy AA5182 sheet, with attention toward warm forming, by using gas pressure to form sheet material. A temperature range of 300°C to 450°C and a pressure range of 690 kPa (100 psi) to 2410 kPa (350 psi) were used in a test matrix of twenty one different test conditions for gas-pressure forming of a sheet into hemispherical dome in a gas-pressure bulge test. Multiple sets of tensile data were used to develop a material model that predicts the dome height and shape of an axisymmetric bulge specimen at any given time during forming. In simulations of the forming process, 17 simulations of the total 21 experimental conditions showed good agreement with the experimentally measured dome heights throughout forming tests. The four cases that did not show good agreement between simulation and experiment are a result of strain-hardening in the material during forming. Strain hardening was not significant in tension testing of specimens and was not accounted for in the material model, which considered only strain rates slower than for these experimental bulge testing. This demonstrates an effect which must be considered in future simulations to predict forming approaching warm conditions. Two experimental bulge specimens were cross-sectioned post forming and grain sizes were measured to determine if grain growth occurred during the forming process. Experimental bulge specimens show no grain growth during the forming process. The tensile specimens from which the material model data were taken were measured to determine if plastic anisotropy was a possible issue. All specimens measured were proved to have deformed nearly isotropically. The results of this study show that predicting warm and hot forming of aluminum alloy AA5182 using gas pressure is possible, but that a more complex material model will be required for accurate predictions of warm forming. This is a very important step toward making hot and warm forming commercially viable mass production techniques.
13th International Conference On Aluminum Alloys Icaa 13
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Author : Hasso Weiland
language : en
Publisher: Springer
Release Date : 2017-02-28
13th International Conference On Aluminum Alloys Icaa 13 written by Hasso Weiland and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-02-28 with Technology & Engineering categories.
This is a collection of papers presented at the 13th International Conference on Aluminum Alloys (ICAA-13), the premier global conference for exchanging emerging knowledge on the structure and properties of aluminum materials. The papers are organized around the topics of the science of aluminum alloy design for a range of market applications; the accurate prediction of material properties; novel aluminum products and processes; and emerging developments in recycling and applications using both monolithic and multi-material solutions.
Light Metals 2015
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Author : Margaret Hyland
language : en
Publisher: Springer
Release Date : 2016-12-20
Light Metals 2015 written by Margaret Hyland and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-12-20 with Technology & Engineering categories.
The Light Metals symposia are a key part of the TMS Annual Meeting & Exhibition, presenting the most recent developments, discoveries, and practices in primary aluminum science and technology. Publishing the proceedings from these important symposia, the Light Metals volume has become the definitive reference in the field of aluminum production and related light metal technologies. The 2015 collection includes papers from the following symposia: 1.Alumina and Bauxite 2.Aluminum Alloys: Fabrication, Characterization and Applications 3.Aluminum Processing 4.Aluminum Reduction Technology 5.Cast Shop for Aluminum Production 6.Electrode Technology for Aluminum Production 7.Strip Casting of Light Metals
Metal Forming Processes
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Author : Kakandikar Ganesh Marotrao
language : en
Publisher: CRC Press
Release Date : 2022-08-25
Metal Forming Processes written by Kakandikar Ganesh Marotrao and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-08-25 with Science categories.
Metal forming processes include bulk forming and sheet metal forming with numerous applications. This book covers some of the latest developments aspects of these processes such as numerical simulations to achieve optimum combinations and to get insight into process capability. Implementation of new technologies to improve performance based on Computer Numerical Control (CNC) technologies are also discussed, including the use of CAD/CAM/CAE techniques to enhance precision in manufacturing. Applications of AI/ML, the Internet of Things (IoT), and the role of tribological aspects in green engineering are included to suit Industry 4.0. Features: Covers latest developments in various sheet metal forming processes Discusses improvements in numerical simulation with various material models Proposes improvements by optimum combination of process parameters Includes finite element simulation of processes and formability Presents a review on techniques to produce ultra-fine-grained materials This book is aimed at graduate students, engineers, and researchers in sheet metal forming, materials processing and their applications, finite element analysis, manufacturing, and production engineering.
Vues D Un Patriote Ou Nouvelles Bases Politiques
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Author :
language : en
Publisher:
Release Date : 1787
Vues D Un Patriote Ou Nouvelles Bases Politiques written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1787 with categories.
Theories Methods And Numerical Technology Of Sheet Metal Cold And Hot Forming
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Author : Ping Hu
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-07-23
Theories Methods And Numerical Technology Of Sheet Metal Cold And Hot Forming written by Ping Hu and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-07-23 with Technology & Engineering categories.
Over the last 15 years, the application of innovative steel concepts in the automotive industry has increased steadily. Numerical simulation technology of hot forming of high-strength steel allows engineers to modify the formability of hot forming steel metals and to optimize die design schemes. Theories, Methods and Numerical Technology of Sheet Metal Cold and Hot Forming focuses on hot and cold forming theories, numerical methods, relative simulation and experiment techniques for high-strength steel forming and die design in the automobile industry. Theories, Methods and Numerical Technology of Sheet Metal Cold and Hot Forming introduces the general theories of cold forming, then expands upon advanced hot forming theories and simulation methods, including: the forming process, constitutive equations, hot boundary constraint treatment, and hot forming equipment and experiments. Various calculation methods of cold and hot forming, based on the authors’ experience in commercial CAE software for sheet metal forming, are provided, as well as a discussion of key issues, such as hot formability with quenching process, die design and cooling channel design in die, and formability experiments. Theories, Methods and Numerical Technology of Sheet Metal Cold and Hot Forming will enable readers to develop an advanced knowledge of hot forming, as well as to apply hot forming theories, calculation methods and key techniques to direct their die design. It is therefore a useful reference for students and researchers, as well as automotive engineers.
Warm Forming Of Aluminum Brazing Sheet Experiments And Numerical Simulations
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Author : Jonathan Mckinley
language : en
Publisher:
Release Date : 2010
Warm Forming Of Aluminum Brazing Sheet Experiments And Numerical Simulations written by Jonathan Mckinley and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
Virtual Fabrication Of Aluminum Products
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Author : Jürgen Hirsch
language : en
Publisher: Wiley-VCH
Release Date : 2006-11-10
Virtual Fabrication Of Aluminum Products written by Jürgen Hirsch and has been published by Wiley-VCH this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-11-10 with Science categories.
This book contains the results of an R&D initiative of the European aluminum industry to apply modern modeling tools so as to develop new methods of virtual fabrication. Industrial experts divulge their own experience to provide a concise overview of the possibilities and success of modeling to date, the critical features and where improved modeling is considered necessary. The book covers the most important aluminum alloys and applications, and concludes with an outlook on the developments envisaged for the next five to ten years. An essential reference for scientists and engineers involved in the aluminum industry and working on aluminum processing and application issues.
Hot Deformation Of Aluminum Alloys Iii
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Author : Z. Jin
language : en
Publisher: Wiley-TMS
Release Date : 2003-01-01
Hot Deformation Of Aluminum Alloys Iii written by Z. Jin and has been published by Wiley-TMS this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-01-01 with Technology & Engineering categories.
These proceedings address recent progress in theoretical and experimental studies of hot deformation of aluminum alloys. Technical papers from fundamental research and industrial applications cover such topics as hot deformation mechanisms, evolution of grain structure, texture, precipitates, and damage in thermomechanical processes including rolling, extrusion, forging, superplastic forming, friction stir welding, severe plastic deformation forming, hydroforming, and semi-solid forming. The design and optimization of thermomechanical processes and microstructure using fundamental understanding, development of models, and computer simulation are also addressed. A collection of papers from the 2003 TMS Annual Meeting and Exhibition, which was held in San Diego, California, March 2-6, 2003.
Characterization And Simulation Of Warm Forming Of 6xxx And 7xxx Series Aluminum Alloys
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Author : Jacqueline Noder
language : en
Publisher:
Release Date : 2017
Characterization And Simulation Of Warm Forming Of 6xxx And 7xxx Series Aluminum Alloys written by Jacqueline Noder and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with Aluminum alloys categories.
This thesis investigates warm forming of 6000 and 7000 series aluminum alloys, namely AA6013 T6, AA7075 T6 and a developmental 7000 series alloy (designated AA70XX T76), including characterization and validation of the material constitutive and friction behaviour at elevated temperature. Experiments and supporting numerical models were developed of warm cup drawing, as well as definition of the thermal process window for a near-commercial structural rail part. The hardening behavior of the AA70XX T76 was well-captured through a temperature- and rate-dependent modification of the Hockett-Sherby model [1] which was developed and calibrated as part of this work. This model was fit to constitutive data measured by DiCecco [2] and Rahmaan [3]. A steady-state coefficient of friction (COF) of 0.032 for the synthetic alcohol-based Fuchs (Forge Ease AL278), 0.007 for the Teflon film, 0.048 for the graphite-based OKS 536, and 0.047 for the LPS Dry Film PTFE Spray, was obtained in the Twist Compression Test (TCT) at a test temperature of 170°C. For uncoated tooling, the steady-state COF and observation of surface damage demonstrated early film breakdown for the LPS Dry Film PTFE Spray at 170°C whereas the OKS 536 experienced failure at the end of the 50 mm sliding distance at 200°C. Fuchs exhibited onset of scoring only at 230°C. Scoring was prevented by using the Fuchs lubricant in combination with CrWN PVD-coated tooling. Circular cup draw operations were performed to assess the performance of the different lubricants under warm forming conditions. Punch force was identified as the most sensitive ranking parameter followed by visual inspection of surface condition, measurement of cup flange perimeter, and draw-in length. The obtained lubricant ranking in the draw experiments was in good accordance with the performance results from the TCT. The earing profile of drawn cups revealed strong in-plane anisotropy for AA70XX T76 versus moderate in-plane anisotropy for AA7075 T6 and AA6013 T6, respectively. Numerical models of the cup-draw operations were developed for AA70XX T76 considering the calibrated rate-dependent hardening model and temperature-dependent COF. A rather complex plasticity formulation was needed to capture the earing response of the AA70XX T76 alloy, using a non-associative Barlat YLD2000-2d [4] function for the plastic potential and a Hosford [5] yield function (as implemented within a user subroutine by Prof. Butcher [6]). While the earing profile (number and shape of ears) was in good experimental agreement, some discrepancies in the peak force and surface strains were observed that were believed to be attributed to model simplifications. The final aspect of this research involved the warm forming of a near-commercial structural rail component with the intention of defining a process window in terms of final part strength, surface quality, and thinning. Two process routes (isothermal forming in heated tooling and non-isothermal forming in room temperature tooling) were considered at various forming temperatures (177°C, 204°C, and 233°C). Micro hardness measurements identified peak-aged AA6013 as displaying low sensitivity (low tendency to overage) for the temperature histories considered. AA7075 T6 exhibited some strength loss (7.8%) when exposed to 177°C even for short heating times. The final part strength of the as-processed AA70XX T76 identified exposure at 204°C for 120 s as critical temperature before considerable hardness loss occurred. Due to the simple geometry of the formed rails, formability was not an issue, as was confirmed by very mild thinning in the formed part.