Effect of grain size on thermal residual stresses and damage in sintered chromium–alumina composites: Measurement and modeling

Węglewski, Witold; Basista, Michał; Mănescu, Adrian; Chmielewski, Marcin; Pietrzak, K.; Schubert, Thomas

doi:10.1016/j.compositesb.2014.06.027

Cited by 40 publications

(24 citation statements)

References 21 publications

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“…• C), raised mechanical strength at high temperatures and high hardness [10,11] can serve as an example of such materials. In addition, the properties of these materials can be enhanced by doping a metallic matrix with a low amount of rhenium [12].…”

Section: Resultsmentioning

confidence: 99%

Metal-ceramic functionally graded materials – manufacturing, characterization, application

Chmielewski¹,

Pietrzak²

2016

Bulletin of the Polish Academy of Sciences Technical Sciences

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Abstract. Functionally graded materials (FGMs) belong to a new, continuously developing group of materials, finding application in various branches of industry. The idea of freely designing their construction profile, restricted only by the available manufacturing techniques, enables obtaining materials with composition and structure gradients having unprecedented properties. In this paper, selected results of works carried out by the authors and relating to the application of the developed metal-ceramic composites were presented in order to manufacture functionally graded materials for target purposes. Gradient structures with various construction profiles that can play different roles were produced on the basis on the following material pairs: Cr-Al2O3, NiAl-Al2O3 and Cu-AlN. Manufacturing conditions, microstructure characteristics and selected properties, crucial from the point of view of future applications, were presented.

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Section: Resultsmentioning

confidence: 99%

Metal-ceramic functionally graded materials – manufacturing, characterization, application

Chmielewski¹,

Pietrzak²

2016

Bulletin of the Polish Academy of Sciences Technical Sciences

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“…Furthermore, Shokrieh et al [2] studied the effects of multi-walled carbon nanotubes on the thermal residual stresses in polymeric fibrous composites. Węglewski et al [3] presented the results of experimental measurements and numerical modeling of the effect of particle size on the residual thermal stresses arising in sintered metal-matrix composites after cooling down from the fabrication temperature. Additionally, Ondurucu and Topcu [4] carried out a thermal elastic-plastic stress analysis for thermoplastic laminated plates.…”

Section: Disorientation Angle Influence On the Thermal Residual Stresmentioning

confidence: 99%

“…Previous researches [1][2][3][4][5][6] have explained the influence of different conditions on the stress-strain state of composite structures. Wong [1] studied the thermal stresses in the discrete joints of sandwiched structures by employing a two-step solution for modeling the stresses in the discrete joints of a sandwiched structure resulting from mismatched thermal expansion.…”

Section: Disorientation Angle Influence On the Thermal Residual Stresmentioning

confidence: 99%

Disorientation angle influence on the thermal residual stresses in carbon multilayered composite plates of different thicknesses

Bitkina¹,

Kang²,

Lee³

2017

Carbon letters

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One of the most acute problems in studying composite stress-strain states is determining the initial residual stresses during the design of layered construction elements. The full stress-strain state of composite constructions consists of the initial (generated during the manufacturing process) and operating (generated during the working period) stages. A thorough investigation of the initial stage of the stress-strain state is very important to finding the total stresses and deformations, and determining the correct destruction time of composite structures, and preventing their destruction. Otherwise, if the initial stresses and deformations are not taken into account, the structures may be destroyed long before their expected service life.Structural factors and conditions, such as the thickness, layup and technological errors, need to be analyzed to solve the initial stress-strain state relevant problem. Among them, one of the technological errors is the disorientation angle, which is expressed as a deviation of the composite layers from the initially given laying directory. Of particular interest is the influence of design factors on the face composite layers and the layers near them since those layers are strongly influenced by different loads and may be destroyed prematurely.The disorientation angle of the face layers was investigated from this perspective. This paper takes into account the disorientation angle, structure types, and thickness, and using this information, we aim to provide more information about predicting composite destruction, by finding the residual thermal stress values for the whole composite construction.Previous researches [1-6] have explained the influence of different conditions on the stress-strain state of composite structures. Wong [1] studied the thermal stresses in the discrete joints of sandwiched structures by employing a two-step solution for modeling the stresses in the discrete joints of a sandwiched structure resulting from mismatched thermal expansion. Furthermore, Shokrieh et al. [2] studied the effects of multi-walled carbon nanotubes on the thermal residual stresses in polymeric fibrous composites. Węglewski et al. [3] presented the results of experimental measurements and numerical modeling of the effect of particle size on the residual thermal stresses arising in sintered metal-matrix composites after cooling down from the fabrication temperature. Additionally, Ondurucu and Topcu [4] carried out a thermal elastic-plastic stress analysis for thermoplastic laminated plates. The elastic-plastic solution for small plastic deformations, and the residual stress distributions along the thickness of the plates were obtained. Liu and Sun [5] analytically researched the effect of thermal residual stresses on the elastoplastic behavior of the composites. Moreover, Kim et al. [6] investigated the curing process for carbon/epoxy composites to reduce thermal residual stress by the cure monitoring system, using dielectrometry and fiber Bragg grating sensors simultaneously.By re...

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“…W przypadku spajania materiałów różnoimiennych (ceramika -metal) pojawiają się problemy wynikające ze zróż-nicowania natury wiązań atomowych tych materiałów. Wśród najważniejszych należy wymienić: brak zwilżalno-ści ceramiki przez ciekłe metale, różnice we właściwo-ściach fizycznych i chemicznych, powodujące generowanie termicznych naprężeń własnych [2]. Wymusza to konieczność zapewnienia specjalnych warunków łączenia, Robert Siedlec, Cezary Strąk, Rafał Zybała Jedną z technik umożliwiających spajanie materiałów różnoimiennych bez konieczności stosowania dodatkowych zabiegów jest zgrzewanie tarciowe.…”

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Morfologia złączy kompozytów Al/Al2O3 zgrzewanych tarciowo ze stopem Al 44200

Siedlec

Strąk

Zybała

2016

Przegląd Spawalnictwa

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StreszczenieW pracy przedstawiono wyniki spajania stopu EN-AC-44200 z materiałami kompozytowymi Al/Al2O3 z wykorzystaniem techniki zgrzewania tarciowego. Zastosowane materiały kompozytowe wytwarzano techniką ciśnieniowej infiltracji SC (ang. squeeze casting) oraz metodą iskrowego spiekania plazmowego SPS (ang. Spark Plasma Sintering). Zawierały one 20 oraz 30% objętościowego udziału fazy wzmacniającej -tlenku glinu, w różnej postaci. W przypadku kompozytów SC wzmocnienie stanowiły cząstki Al2O3 (α-form) o wielkości 3-6 μm, zaś dla kompozytów SPS był to elektrokorund gruboziarnisty o uziarnieniu 180 μm. W pracy przedstawiono optymalne parametry procesu zgrzewania tarciowego dla poszczególnych materiałów kompozytowych, opracowane przez autorów na podstawie analizy zmian mikrostruktury i twardości materiałów w obszarze spajania. Przeprowadzone badania miały na celu ocenę morfologii oraz jakości połączenia pomiędzy stopem 44200 a kompozytami Al/Al2O3 w zależności od rodzaju wzmocnienia oraz techniki wytwarzania kompozytów Al/Al2O3Słowa kluczowe: zgrzewanie tarciowe; kompozyt Al/Al2O3; Al2O3; stop Al AbstractThe paper presents results of bonding EN AC-44200 alloy with a different composite materials by friction welding technique. Materials used in the study, were processed using two techniques: squeeze casting (SC) and spark plasma sintering (SPS). It contained a 20% and 30% volume reinforced fraction of different forms of Al2O3. This paper presents the developed friction welding conditions of two different composite materials, and the analysis of microstructure and microhardness for obtained joints. All of studies were performed to determine the morphology and the quality of the connection between the 44200 alloy and Al/Al2O3 composites.

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Effect of grain size on thermal residual stresses and damage in sintered chromium–alumina composites: Measurement and modeling

Cited by 40 publications

References 21 publications

Metal-ceramic functionally graded materials – manufacturing, characterization, application

Metal-ceramic functionally graded materials – manufacturing, characterization, application

Disorientation angle influence on the thermal residual stresses in carbon multilayered composite plates of different thicknesses

Morfologia złączy kompozytów Al/Al2O3 zgrzewanych tarciowo ze stopem Al 44200

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