Optimizing glue joint of aluminium metallic foams

Nowacki, J.; Sajek, Adam

doi:10.5604/17348412.1227681

Cited by 5 publications

(5 citation statements)

References 12 publications

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“…The majority of stresses in a glued joint where such surface was applied concentrate in the thin walls of the foam (Fig. 15) is in line with the articles [20]- [24]. Despite the minimum amount of adhesive, the stress distribution in the joint is favourable for the filler.…”

Section: Gluing Techniquementioning

confidence: 55%

Trends of Joining Composite AlSi-SiC Foams

Nowacki

Sajek

2019

Advances in Materials Science

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The paper consist of characterization of the essence of structure, properties and application of AlSi-SiC composite foams as well as limitations and possibilities of their joining. Porous structure with porosity up to 80% and exceptional properties of aluminium foams are the reason of their numerous application and interest of their joining. Consideration of methods of welding, soldering and gluing AlSi9-SiC10 composite foams, the joint structure, and properties. Recommendations for surface preparation of foam, and different joining procedures aimed at control the porosity of the foam and glued surface roughness were established. Result of EDS and XRD investigations of the AlSi9-SiC10 composite foams joint were considered.

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Section: Gluing Techniquementioning

confidence: 55%

Trends of Joining Composite AlSi-SiC Foams

Nowacki

Sajek

2019

Advances in Materials Science

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“…The double sided, two pass welding process for duplex and austenitic thick plates is considered to be undesirable, as the required high heat input would generate too low a ferrite content in the weld metal and create favorable conditions for the precipitation of intermetallic phases [9]. Other opinions [10] say that thick plates of stainless steels can be successfully welded with the use of higher heat inputs. So far there is not clearly established the maximum heat input limit that gives joints with acceptable mechanical and corrosion properties.…”

Section: Methodsmentioning

confidence: 99%

Environmental Degradation of Dissimilar Austenitic 316L and Duplex 2205 Stainless Steels Welded Joints

Topolska¹,

Łabanowski²

2017

Archives of Metallurgy and Materials

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The paper describes structure and properties of dissimilar stainless steels welded joints between duplex 2205 and austenitic 316L steels. Investigations were focused on environmentally assisted cracking of welded joints. The susceptibility to stress corrosion cracking (SCC) and hydrogen embrittlement was determined in slow strain rate tests (SSRT) with the strain rate of 2.2 × 10 -6 s -1 . Chloride-inducted SCC was determined in the 35% boiling water solution of MgCl 2 environment at 125°C. Hydrogen assisted SCC tests were performed in synthetic sea water under cathodic polarization condition. It was shown that place of the lowest resistance to chloride stress corrosion cracking is heat affected zone at duplex steel side of dissimilar joins. That phenomenon was connected with undesirable structure of HAZ comprising of large fractions of ferrite grains with acicular austenite phase. Hydrogen assisted SCC tests showed significant reduction in ductility of duplex 2205 steel while austenitic 316L steel remains almost immune to degradation processes. SSR tests of dissimilar welded joints revealed a fracture in the area of austenitic steel.

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“…The infrared thermography camera is a modern technology for temperature measurement. Such an approach depending on measuring infrared radiation emitted from an objective surface [1]. It is very useful for non-contact measurement.…”

Section: Introductionmentioning

confidence: 99%

Interference Phenomena on Infrared Thermography during a Mushy Solidification Zone

Kaewwichit

Phaoniam

Poopat

2022

MSF

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This research aims to investigate the interference phenomena on a mushy zone during weld solidification using infrared thermography. Stationary heating source was carried out on a low carbon steel through GTAW process. The different spot-heating sequences were studied, namely, single and double melting steps. Surface preparation of a specimen was divided into two (2) cases, firstly a non-grinded surface and secondly a grinded surface. Thermocouples of three (3) points were attached nearby liquid-solid state region in order to verify an appropriate emissivity coefficient of a high-temperature mushy zone. As the result, in the case of non-grinded surface specimen with immediately spot-melting double steps exhibited that the infrared images were strongly interfered from an oxide film formation. Such an oxidized surface moved randomly around the molten pool margin. As for the grinded surface specimen with spot-melting double steps, it revealed the first-spot melting step was notably clear infrared images. However, the second-spot melting step exhibited the interference phenomena from the first-melted surface region. Such the surface region affected on the proper heat transfer emissivity coefficient of high temperature. The grinded surface with single melting step was able to attain clear infrared images. Therefore, the corrected temperature of a mushy zone was determined by approximate constant emissivity coefficient of 0.23. Additionally, more accurate temperature measurement of entire region was done with emissivity coefficient depended on temperature.

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Optimizing glue joint of aluminium metallic foams

Cited by 5 publications

References 12 publications

Trends of Joining Composite AlSi-SiC Foams

Trends of Joining Composite AlSi-SiC Foams

Environmental Degradation of Dissimilar Austenitic 316L and Duplex 2205 Stainless Steels Welded Joints

Interference Phenomena on Infrared Thermography during a Mushy Solidification Zone

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