Formability modelling of aluminium base PM alloys

Información del proyecto

Identificador del acuerdo de subvención: IC15960750

Proyecto cerrado

Fecha de inicio 1 Enero 1997

Fecha de finalización 31 Diciembre 1998

Financiado con arreglo a

• Specific research, technological development and demonstration programme in the field of cooperation with third countries and international organizations, 1994-1998

Coste total

Sin datos

Aportación de la UE

€ 230 000,00

Coordinado por

UNIVERSITAET HANNOVER
Germany

Objetivo

Foreseen Results

Expected achievements and benefits of the project are:
A consistent description of material behaviour, which will establish a reference knowledge base;
A proof of constitutive relations applicability for the target alloys;
A better understanding of correlation between process parameters and the achievable product specifications in terms of resistance and quality will lead to a better production control;
Improvement of product quality;
Extension of the application area of PM products;
Sensitizing the target industry branches about the feasibility of PM products production;
Stimulation of the development of a scrap-free manufacturing method;
Contribution towards development of a technology which can use recycled materials;
Acceleration of modernization in a high technology sector.

The exploitation of the project results will have a stimulating effect on the industry in the involved Central European
countries. The target group of industrial companies has got already several interested members, which have provided letters of endorsement.
Powder metallurgy parts, a result of consolidation of metal powders into various shapes using pressed compaction of powder in precisely shaped metal dies, provides a means for generating low-cost parts for high-volume, small parts applications. CAB of powder metallurgy processes has been doing progresses by development of material models which allow the simulation of evolution in critical phases like compaction, sintering and forging. The Finite Element Method has established itself as the most efficient and flexible one. However, attention is continuously given to the characterization of the material properties at the micro- and macro-structural level, in order to make a realistic estimation of key parameters of the mathematical model, which are at the base of formability estimation by FEA. The application of PM aluminium base alloys is still dependent on the correct evaluation of the formability and of aspects related to the physical metallurgy of the process. Systematic research is still to be done, both theoretically and experimentally in order to build a scientific fundament in this area. Validation of the process mechanisms by simulation will eventually extend the interest of manufacturing industry.
In Hungary, Slovakia and Poland powder metallurgy has a long tradition. Although, the level of industrial application of A1 base PM alloys is low, in comparison with other European and non-European countries like Japan and USA. Scientific cooperation within the project will have a synergetic effect by bringing together professionals from five European countries, who will provide complementary expertise and will contribute actively towards development in a sensitive area of production technology. The project will be done on already existing basis facilities.
Assessment of formability will be made on the basis of experimental research of two relevant PM aluminium alloys with high contents of silicium. The research will be carried out on two parallel levels: experimental and theoretical. On the experimental level, fabrication of PM products by extrusion-type compaction will be done. A comprehensive microstructural analysis of the powders used and of the compacted specimens (optical microscopy, TEM, SEM, X-ray analysis) will provide data which, together with mechanical testing (strength, hardness, ductility, tenacity, fatigue), can describe the correlation between the fabrication process parameters and representative product characteristics. Material data regarding the inelastic behaviour of compacted material under external loading (flow curves in different loading/unloading schemes, toolworkpiece interface characteristics) will be the base of the FEM analysis of the process. A further die-forging operation will be performed on compacted bar workpiece into a connection rod shape. Numerical simulation of this operation will be made. Conclusions will be drawn regarding the influential factors of the formability of the studied PM aluminium alloys.

Ámbito científico (EuroSciVoc)

• ciencias naturales › ciencias físicas › óptica › microscopía
• ciencias naturales › ciencias químicas › química inorgánica › metales de postransición
• ingeniería y tecnología › ingeniería de materiales › metalurgia
• ciencias naturales › matemáticas › matemáticas aplicadas › modelo matemático

Programa(s)

• FP4-INCO - Specific research, technological development and demonstration programme in the field of cooperation with third countries and international organizations, 1994-1998

Tema(s)

• 01020701 - Tools, techniques and systems for high quality manufacturing

Convocatoria de propuestas

Datos no disponibles

Régimen de financiación

CSC - Cost-sharing contracts

Coordinador

UNIVERSITAET HANNOVER

• Aportación de la UE: Sin datos
• Dirección: 1A,Welfengarten 1 ; 30167 HANNOVER ; Alemania
• Coste total: Sin datos

Participantes (4)

ADVANCED MATERIALS ANALYSIS

Países Bajos

• Aportación de la UE: Sin datos
• Dirección: 97,Kleine Houtstraat 97 ; 7500 DT ENSCHEDE
• Coste total: Sin datos

INSTITUTE OF MATERIALS RESEARCH, SLOVAK ACADEMY OF SCIENCES

Eslovaquia

• Aportación de la UE: Sin datos
• Dirección: 47,Watsonova 47 ; 043 53 KOSICE
• Coste total: Sin datos

Technical University of Budapest

Hungría

• Aportación de la UE: Sin datos
• Dirección: 1-3,Múegyetem rkp. ; 1521 Budapest
• Coste total: Sin datos

University of Mining and Metallurgy

Polonia

• Aportación de la UE: Sin datos
• Dirección: 30,al. Mickiewicza 30 ; 30 059 Kraków
• Coste total: Sin datos