Production of Aluminium Based Interpenetrating Phase Composites Using Semi-Solid Forming

Riedmüller

2022

SSP

Self Cite

Interpenetrating Phase Composites (IPC) belong to a special category of composite materials, offering great potential in terms of material properties due to the continuous volume structure of both composite components. While manufacturing of metal-ceramic IPC via existing casting and infiltration processes leads to structural deficits, semi-solid forming represents a promising technology for producing IPC components without such defects. Thereby, a solid open pore body made of ceramic is infiltrated with a metallic material in the semi-solid state. Good structural characteristics of the microstructure as the integrity of the open-pore bodies after infiltration and an almost none residual porosity within the composites have already been proven for this manufacturing route within a certain process window. On this basis, the following paper focuses on the mechanical properties such as bending strength of metal-ceramic IPC produced by using semi-solid forming technology. Thereby, the impact of the significant process parameters on these properties is analysed within a suitable process window. Furthermore, a fractographic analysis is carried out by observing and interpreting the fracture behaviour during these tests and the fracture surface thereafter.

Section: Manufacturing Of Metal-ceramic Ipcmentioning

confidence: 92%

Bending Strength and Fracture Behaviour of Metal-Ceramic Interpenetrating Phase Composites Manufactured by Using Semi-Solid Forming Technology

Riedmüller

2022

SSP

Self Cite

“…All experiments described in this paper have been performed with a hydraulic high-speed press at IFU Stuttgart and a tool with an open die cavity. Further experiments showed, that placing the heated billet on top of the ceramic body results in cracking of it [8]. Semi-Solid of Alloys and Composites XV Therefore, in the research work presented the heated billet was placed aside from the ceramic body.…”

Section: Introductionmentioning

confidence: 99%

“…In this context, the semi-solid forming technology shows promising process conditions, especially because of its lower temperature levels during the infiltration process [8]. Using this technology for manufacturing of metal-ceramic IPC may offer samples with none of the prescribed structural deficits and consequential with good thermomechanical properties.…”

Section: Introductionmentioning

confidence: 99%

“…Damage of the ceramic body. Since high mechanical pressure effected damages of the ceramic body in previous work [8], the microstructure of the manufactured samples was also investigated in relation to this. These investigations showed that damage and displacement of the ceramic bodies occurred in all experiments in which the liquid fraction of the aluminium alloy was 50 %.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Structural Characteristics of Metal-Ceramic Interpenetrating Phase Composites Manufactured by Using Semi-Solid Forming Technology

2019

SSP

Self Cite

Interpenetrating Phase Composites (IPC) belong to a special subcategory of composite materials and reveal enhanced properties compared to the more common particle or fibre reinforced composite materials. However, as the use of conventional manufacturing processes creates structural deficits, these IPC are not able to exploit their complete potential. In this respect, infiltration of open-pore bodies from alumina with an aluminium alloy in the semi-solid state offers great perspectives for manufacturing of IPC. In this context, this paper is focusing on significant structural characteristics of metal-ceramic IPC produced in this way by using a tool with an open die cavity. Thereby, the macroscopic mould filling, possible damage of the ceramic body, the residual porosity, the filling of microporosity of the cell walls and possible interface reactions depending on the thermal parameters of the manufacturing process were investigated in this paper.

“…Current research activities concerning MMC-applications in the semi-solid state are predominantly focusing on metal alloys with integrated discontinuous reinforcements like short fibers [1] or particles [2]. When currently processing MMC with continuous reinforcement in the semi-solid state, there can be found research activities in the field of processing MMC components reinforced by long fibers [3], woven fibers [4] or IPC [5]. In the field of processing hybrid components in the semi-solid state, there are current research activities on joining different metallic materials [6] and on forming hybrid semi-finished materials [7].…”

Section: Introductionmentioning

confidence: 99%

Semi-Solid Metal Forming - A Process for Manufacturing Composite and Hybrid Materials

Seyboldt

2017

DDF

Self Cite

The following paper deals with the manufacturing of composite and hybrid materials by using semi-solid forming technologies. On the one hand, there is presented a process for producing Interpenetrating Phase Composites (IPC) consisting of ceramic open-cell structures which are infiltrated by a semi-solid aluminium alloy. On the other hand, a new process for manufacturing hybrid metallic materials is described. Thereby, semi-finished materials made of two different aluminium alloys are simultaneously heated using an induction system and subsequently formed in the semi-solid state. The paper shows numerical investigations as well as experimental results for both processes.