Development of Functionally Graded Nodular Cast Iron Reinforced with Recycled WC Particles

Leibholz, Rodolfo; Robert, Maria Helena; Leibholz, Henrique; Bayraktar, E.

doi:10.1007/978-3-319-41766-0_29

Cited by 9 publications

(9 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Polajnar et al investigated functionally graded DCI as material for brake pads in the automotive sector [ 10 ]. Leibholz et al investigated the combination of DCI reinforced with tungsten carbide particles [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Potential of Metallurgical Gradients in the Design of Structural Components Made of Nodular Cast Iron

et al. 2021

View full text Add to dashboard Cite

The objective of this work is to investigate the use of metallurgical gradients (MG) in the design of structural components made of ductile cast iron (DCI). MG have been realized in this study by locally varying the pearlite fraction of the matrix. Exemplarily, the allowable cyclic load for a drive shaft as well as the allowable static displacement are calculated. The performed calculations are based on static and cyclic strength data of four different DCI with amounts of pearlite ranging from 0% to 96.8%. To show the advantage of the purposeful usage of local MG, ten different configurations are examined by numerical simulation studies of a generic drive shaft comprising a circumferential notch. Four configurations are calculated assuming homogenous material throughout the entire component. In the other six configurations the surface region of the notch root has an increased amount of pearlite. For each configuration the allowable multiaxial cyclic load by combinations of torsion and bending was calculated and subsequently the allowable static bending displacement. The results show that the targeted realization of MG results in a significant increase in the multiaxial fatigue strength of the shaft as well as in a slight improvement of the allowable static bending displacement.

show abstract

Section: Introductionmentioning

confidence: 99%

Potential of Metallurgical Gradients in the Design of Structural Components Made of Nodular Cast Iron

et al. 2021

View full text Add to dashboard Cite

show abstract

“…AA 2319). In many of the studies, fine ceramic reinforced aluminum composites were generally produced by reactive metal infiltration and/or by melting process very similar to in situ reaction [17][18][19][20][21][22][23]. Based on our scientific and experimental knowledge and our agreement with the aeronautic research team, we have been developing the method "Sinter þ Forging and/or Thixoforming," for the manufacture of hard ceramic particle reinforced composites.…”

Section: Introductionmentioning

confidence: 99%

Detailed investigation of TiN effect on hybrid intermetallic composites manufactured by combined sinter + forging method

Enginsoy

Bayraktar

Katundi

et al. 2021

Mechanics of Advanced Materials and Structures

Self Cite

View full text Add to dashboard Cite

Hybrid intermetallic composites (HICs-aluminum based matrix, new hybrid design) reinforced with titanium nitride (TiN) and alumina (c-Al 2 O 3 ) were designed and manufactured through the innovative combined method of sinter þ forging. This method results in highly dense materials with, in general, improved mechanical properties. In the composites TiN content was varied (10, 20 and 30 wt %) but c-Al 2 O 3 content was kept constant at 10 wt%. Additionally, 5 wt% each of Cu and Ni were mixed in to improve processing of the composites. The mechanical properties were specified by different destructive test methods (wear performance, micro hardness, quasi-static compression, three-point bending tests). Wear performance was investigated by scratch experiments. Scanning electron microscopy (SEM) was used to determine the microstructure, interface characteristics and the fracture surfaces. The SEM analysis yielded that TiN powders were located at the grain boundaries and this can be attributed to the improvement observed in the mechanical properties and wear performance with the addition of TiN.

show abstract

“…In situ and ex situ methods could be applied to fabricate the composite reinforcement [10][11][12]. In the ex situ methods, the ceramic is previously produced with the required shape and then inserted into the mold [11,[13][14][15][16][17][18][19][20][21][22], while in situ methods aim to produce the ceramic particles through the combustion reaction of the powder compacts inserted in the mold cavity [23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Microstructural Characterization of TiC–White Cast-Iron Composites Fabricated by In Situ Technique

et al. 2020

View full text Add to dashboard Cite

High-chromium white cast-iron specimens locally reinforced with TiC–metal matrix composites were successfully produced via an in situ technique based on combustion synthesis. Powder mixtures of Ti, Al, and graphite were prepared and compressed to fabricate green powder compacts that were inserted into the mold cavity before the casting. The heat of the molten iron causes the ignition of the combustion reaction of the reactant powders, resulting in the formation of the TiC by self-propagating high-temperature synthesis. The microstructure of the resultant composites and the bonding interfaces was characterized by scanning electron microscopy and energy dispersive spectroscopy (SEM/EDS), X-ray diffraction (XRD), and transmission electron microscopy (TEM). The microstructural results showed a good adhesion of the composite, suggesting an effective infiltration of the metal into the inserted compact, yet a non-homogeneous distribution of the TiC in the martensite matrix was observed. Based on the results, the in situ synthesis appears to be a great potential technique for industrial applications.

show abstract

Development of Functionally Graded Nodular Cast Iron Reinforced with Recycled WC Particles

Cited by 9 publications

References 8 publications

Potential of Metallurgical Gradients in the Design of Structural Components Made of Nodular Cast Iron

Potential of Metallurgical Gradients in the Design of Structural Components Made of Nodular Cast Iron

Detailed investigation of TiN effect on hybrid intermetallic composites manufactured by combined sinter + forging method

Microstructural Characterization of TiC–White Cast-Iron Composites Fabricated by In Situ Technique

Contact Info

Product

Resources

About