Investigation of deformation and failure features in hot stamping of AA6082: Experimentation and modelling
Reads0
Chats0
TLDR
In this paper, a set of coupled viscoplastic constitutive equations for deformation and damage in hot stamping and cold die quenching of AA6082 panel parts are introduced.Abstract:
This paper introduces a set of coupled viscoplastic constitutive equations for deformation and damage in hot stamping and cold die quenching of AA6082 panel parts The equation set can be used to predict viscoplastic flow and plasticity-induced damage of AA6082 under hot forming conditions Deformation and damage depend upon a coupled set of evolving internal state variables, eg dislocation density, which in turn is affected by thermally activated and deformation-dependent recrystallisation and recovery A phenomenological description of damage is derived based on the expected physical scaling with temperature, strain and strain rate The resulting equations were implemented in the commercial software ABAQUS via the user-defined subroutine VUMAT for carrying out forming process simulations An experimental programme was designed, and specialised testing facilities developed for calibrating and validating the FE process modelling results A good agreement between the process simulation and the experimental results has been achieved This confirms that the physical dependencies in the constitutive equations are correctly formed, and that the equations and FE model can be calibrated and used for hot stamping of AA6082 panel parts Further, forming process optimisation was carried out using the model to identify the optimal forming parameters for a basic panel part with a circular hole in the middle The study concludes with a discussion of the potential impact of the constitutive model, experimental characterisation and modelling results on AA6082 panel parts manufactureread more
Citations
More filters
Journal ArticleDOI
Hot stamping of ultra-high strength steel parts
Ken-ichiro Mori,Paolo Francesco Bariani,Bernd-Arno Behrens,Alexander Brosius,Stefania Bruschi,Tomoyoshi Maeno,Marion Merklein,Jun Yanagimoto +7 more
TL;DR: The hot stamping processes of quenchable steel sheets potentially offer not only small forming load and high formability, but also high strength and no springback by die quenching.
Journal ArticleDOI
A review on forming techniques for manufacturing lightweight complex—shaped aluminium panel components
TL;DR: In this paper, a comprehensive review of widely used forming processes for aluminium alloys, under cold, warm and hot forming conditions, and the material characteristics and equipment used for each process are presented.
Journal ArticleDOI
Numerical study of the solution heat treatment, forming, and in-die quenching (HFQ) process on AA5754
TL;DR: In this article, an FE model of the solution heat treatment, forming and in-die quenching (HFQ) process was developed and a good correlation with a deviation of less than 5% was achieved between the thickness distribution of the simulated and experimentally formed parts.
Journal ArticleDOI
Tribological behaviour and lubrication performance of hexagonal boron nitride (h-BN) as a replacement for graphite in aluminium forming
TL;DR: In this article, the possibility of replacing graphite with hexagonal boron nitride (h-BN), also known as white graphite, was investigated, including the influence of h-BN powder size and concentration on its tribological performance and the aluminium's surface quality.
Journal ArticleDOI
Hot stamping of AA5083 aluminium alloy sheets
TL;DR: In this article, the feasibility of producing sheet components by stamping AA5083 sheets at elevated temperature and strain rate was evaluated by using tensile and Nakajima-type tests to determine the optimal combination of process parameters assuring both maximum formability and effective post deformation mechanical properties.
References
More filters
Book
Light Alloys : Metallurgy of the Light Metals
TL;DR: The physical metallurgy of aluminium alloys has been studied in this article, with the focus on the light metals and their applications in the development of novel alloys and processes.
Book ChapterDOI
On creep fracture by void growth
Alan C.F. Cocks,M.F. Ashby +1 more
TL;DR: In this article, recent developments in the understanding of creep fracture in both uniaxial tension and multiaxonial stress states are outlined. Simple analytical equations for void growth are given.
Journal ArticleDOI
Influence of heat treatment on the microstructure and mechanical properties of 6005 and 6082 aluminium alloys
TL;DR: In this article, the effect of the cooling conditions after homogenization of the 6082 aluminium alloys was studied and the effects of the solution heat treatment temperature on the mechanism and ageing kinetics of the two commercial wrought aluminum alloys 6005 and 6082 was also analyzed.
Journal ArticleDOI
Hydroforming - a method to manufacture light-weight parts
F. Dohmann,Ch. Hartl +1 more
TL;DR: In this paper, the authors present proceedings and methods to develop process control and highlights the significance of process control for the quality of the forming result of a circular metal tube in a hydroforming process.
Journal ArticleDOI
Biaxial warm forming behavior of aluminum sheet alloys
Daoming Li,Amit K. Ghosh +1 more
TL;DR: In this article, biaxial warm forming behavior in the temperature range 200-350°C is investigated for three automotive aluminum sheet alloys: Al 5754, Al 5182 containing 1% Mn (Al 5182+Mn) and Al 6111-T4.