Szczegóły publikacji
Opis bibliograficzny
Closed-die forging of multi-component materials from powder / Stefan SZCZEPANIK, Gabriel Barton // Steel Research International ; ISSN 1611-3683. — Tytuł poprz.: Steel Research. — 2008 — [vol. 79] spec. ed., s. 479–485. — Bibliogr. s. 484–485, Abstr. — Metal Forming 2008 : proceedings of the 12th international conference on Metal forming : Kraków, Poland, September 21.–24.2008, Vol. 2 / eds. Maciej Pietrzyk, [et al.]. — Düsseldorf : Verlag Stahleisen GmbH, cop. 2008 + CD-ROM [doł. do Vol. 1.]. — ISBN 978-3-514-00754-3. — Zastosowano procedurę peer review
Autorzy (2)
- AGHSzczepanik Stefan
- Barton Gabriel
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 40617 |
|---|---|
| Data dodania do BaDAP | 2008-10-09 |
| Rok publikacji | 2008 |
| Typ publikacji | referat w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Steel Research International |
Abstract
Multicomponent and multilayer materials are a new generation of construction products and the powder metallurgy, PM, route enables the manufacture of high density products of the required shape with gradient properties. This paper analyses material flow during closed-die forging. Starting materials were obtained by cold pressing and hot consolidation; these were a mixture of nickel and aluminium. powders and a layer preform of aluminium and Al17Si5Fe3Cu1,1Mg0,6Zr powder. Plasticine and numerical simulation of the flow of PM preforms during forging was carried out to obtain qualitative information. Numerical modelling required setting up procedures for input of initial material and identification of its constituents and their control during the shaping simulation and remeshing. To accomplish this, a workpiece consisting of several different materials was input to the finite element simulation programme LARSTRAN/Shape. During preprocessing, the simulation of the workpiece is performed by the element. The number of different material descriptions to be used simultaneously is not limited. This multi-material functionality can also be used if the finite element mesh representing the work piece requires remeshing during the simulation, and is therefore applicable even in simulations of processes with large deformations. The algorithm developed to transfer the material assignment is discussed, as also its associated specifics. The data transfer algorithm transfers relevant values from the old mesh when the work piece is remeshed, and also adds an algorithm to transfer the material assignment to the elements of the new mesh. The experimental results are encouraging; zero porosity was attained, as are the simulation results, which are comparable with the results of closed-die forging of multicomponent and multilayer preforms.
