Title
Plastic forming of AHSS-TRIP steel and hexagonal structure Ti and Zn alloys sheets using layered elastomeric tools
Code
#52510444
Solver
Start year
2025
End year
2026
Provider
Visegrad Fund
Category
Obecná forma
Type
Visegrádské granty
Summary
For many years, processes using elastomeric materials for plastic forming of sheets made of Al alloys have been widely used in the aviation industry. However, forming sheets made of difficult-to-form alloys, including Advanced High-Strength Steels (AHSS), such as Transformation Induced Plasticity (TRIP) and those with a hexagonal structure, including Ti and Zn alloys, can cause many problems. The main limitation is the lack of possibility of forming at elevated temperatures due to the limitations of the temperature resistance of the elastomer and the specific crystallographic structure causing high anisotropy of the sheets and difficulties in their deformation, which can cause loss of stability and cracking. Giving the right shape to 1 mm thick products made of high-strength and a hexagonal structure sheets means that the elastomeric material is used under high pressure conditions, which is necessary to shape elements from the presented materials. Previous reports, both in the form of scientific publications and internal materials and the experience of employees of aviation companies, allow us to state that there are no clearly defined guidelines regarding the type and properties of elastomeric materials used for plastic forming of sheets. This information gap became the motivation to conduct this research. The aim of the work is numerical and experimental studies aimed at assessing the effect of layered tools made of elastomeric materials on the possibilities of forming sheets made of AHSS-TRIP steel and hexagonal structure Ti and Zn alloys. Elastomeric materials, with hardnesses of 50, 60, 70, 80 and 90 Shore A scale, will be selected for sheets plastic forming. Three steel dies of different shapes will be also used, allowing for the assessment of the effect of the stress state in the formed elements on the quality of the obtained cups.