Compressive and tensile deformation behaviour of TRIP steel-matrix composite materials with reinforcing additions of zirconia and/or aluminium titanate

Weigelt, Christian; Schmidt, Gert; Aneziris, Christos G.; Eckner, Ralf; Ehinger, D.; Krüger, Lutz; Ullrich, C.; Rafaja, David

doi:10.1016/j.jallcom.2016.10.176

Cited by 23 publications

(20 citation statements)

References 49 publications

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“…As expected, the specimens without any ceramic fraction exhibited the highest ultimate tensile strength (UTS) and ductility (≈19% fracture strain) among all the materials tested. As already known from the literature and previous investigations, the (partial) replacement of the ductile metallic matrix by ceramic particles lowers the material's deformability, especially under tensile loading inducing typical damage events such as debonding, particle fracture, or crack coalescence . Although the composite variants (see Figure ) revealed only rare advantages of the characteristic values as compared to pure steel specimens, the results provide considerable improvements replacing pure ceramic components.…”

Section: Resultssupporting

confidence: 51%

Metal‐Matrix Materials for High‐Temperature Applications with Liquid Aluminum

et al. 2019

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Herein, powder metallurgically processed transformation‐induced plasticity effect (TRIP)‐steel‐matrix composites with additions of TiO2 or Al2O3–TiO2 are investigated for their potentional use as a impact pad in aluminum melting furnaces. The composites contain volume fractions of 10% or 30% ceramic particles dispersed in a CrMnNi‐steel matrix. The formation of ceramic precipitates in the steel and the interactions between the matrix and the ceramic particles during sintering influence the microstructure of the fired materials. TiO2 promotes the formation of Mn–Ti–O spinel‐type structures whereas the Al2O3–TiO2 material induces the additional formation of Ti–Mn–Al–O solid solutions but reduces the densification progress. Despite material changes, the steel matrix undergoes α'‐martensite formation during quasi‐static tensile loading at room temperature in the reference material and in the composite variants. The yield strength in the composite variant with 10 vol% TiO2 increases by 28% (constant with 10 vol% Al2O3–TiO2), whereby the ultimate tensile strength and the fracture strain are lower for all composite variants as compared to the pure steel. The yield strength of the materials after immersion test in liquid aluminum at 800 °C is +80% (10% TiO2) or +29% (10% Al2O3–TiO2) as compared to the corroded steel material.

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Section: Resultssupporting

confidence: 51%

Metal‐Matrix Materials for High‐Temperature Applications with Liquid Aluminum

et al. 2019

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“…In contrast to the spinel, no characteristic peaks of the silicate could be identified in the corresponding XRD diffraction pattern. In related CrMnNi alloys prepared by manufacturing technologies that also involve a debinding step and subsequent pressureless sintering, the occurrence of oxidic particles consisting mainly of manganese and silicon is reported consistently . In addition, the formation of MnCr 2 O 4 spinel is also identified …”

Section: Resultsmentioning

confidence: 84%

“…In related CrMnNi alloys prepared by manufacturing technologies that also involve a debinding step and subsequent pressureless sintering, the occurrence of oxidic particles consisting mainly of manganese and silicon is reported consistently. [33,34] In addition, the formation of MnCr 2 O 4 spinel is also identified. [34] Increasing debinding temperatures cause thicker oxide layers to form on the surface of the steel powder particles as the oxygen content and the mass-change graph in Figure 1 demonstrate.…”

Section: Debinding Experimentsmentioning

confidence: 91%

Processing of 17Cr7Mn6Ni TRIP Steel Powder by Extrusion at Room Temperature and Pressureless Sintering

et al. 2020

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Transformation‐induced plasticity (TRIP) steels are known for their outstanding strength and their excellent deformation properties, which are necessary for the improvement of occupant safety elements in air, rail and motor vehicles. One precondition for the realization of the TRIP effect is the creation of a metastable austenitic microstructure through the addition of a number of alloying elements. The great affinity of some alloying elements for oxygen implies the formation of highly stable oxides during thermal processing. In the current study, an extrusion process (derived from the processing of ceramics) with subsequent debinding and pressureless sintering is used to manufacture compact strands from prealloyed and gas‐atomized 17Cr7Mn6Ni TRIP steel powder. The influence of both the debinding temperature and sintering atmosphere on the oxide particle content in the final bulk product are investigated by X‐ray diffraction (XRD) analysis and quantitative metallography. Furthermore, X‐ray photoelectron spectroscopy (XPS) analysis in association with temperature‐programmed reduction (TPR) experiments, thermogravimetric (TG) measurements and mass/infrared spectroscopy (MS/IRS) serve to monitor the changes in the steel powder surface composition and the effectiveness of hydrogen as a reducing agent.

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“…This provided an improvement in hardness and wear rate, and the efficiency of SiC was higher compared to Al 2 O 3 . Mechanical properties and structures of MMCs on the basis of high-alloyed CrMnNi steel with MgO, ZrO 2 , and Al 2 TiO 5 additives were described by Weigelt et al in [ 20 ]. In the studied materials, higher strength and strain hardening were registered in comparison to base steel.…”

Section: Introductionmentioning

confidence: 99%

On the Microstructure, Strength, Fracture, and Tribological Properties of Iron-Based MMCs with Addition of Mixed Carbide Nanoparticulates

et al. 2020

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In this paper, the features of the strength, fractures, and tribological behavior of metal-matrix composites based on the FeGr1 material are discussed. To improve the material properties, a mixture of SiC, Al2O3 and C nanoparticulates have been added to an iron-based matrix. The simplex lattice design method and hardness, compression, and bending tests were used to determine the mechanical properties. Scanning electron microscopy was applied for fracture features analysis. Different fracture types, mainly trans-crystalline quasi-brittle and brittle fracture or inter-granular fracture and microcracks were registered for the composites tested. Depending on the type and amount of ceramic additives, significant changes in strength, as well as in the fracture features of the metal-matrix composites (MMCs), were observed. Based on tribological tests, changes in the momentary coefficients of friction, temperature of the friction surface, and wear rate of the composites with nanoparticulates were described. An analysis of the worn surface morphology revealed changes in the wear process depending on the MMC composition. It was shown that the use of hybrid mixed additives based on hard ceramic nanoparticulates improved both strength and tribological properties of composites.

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Compressive and tensile deformation behaviour of TRIP steel-matrix composite materials with reinforcing additions of zirconia and/or aluminium titanate

Cited by 23 publications

References 49 publications

Metal‐Matrix Materials for High‐Temperature Applications with Liquid Aluminum

Metal‐Matrix Materials for High‐Temperature Applications with Liquid Aluminum

Processing of 17Cr7Mn6Ni TRIP Steel Powder by Extrusion at Room Temperature and Pressureless Sintering

On the Microstructure, Strength, Fracture, and Tribological Properties of Iron-Based MMCs with Addition of Mixed Carbide Nanoparticulates

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