Towards aging in a multipass friction stir–processed АА2024

Калашников, К. Н.; Tarasov, S. Yu.; Чумаевский, А. В.; Фортуна, С. В.; Елисеев, А. А.; Ivanov, A. N.

doi:10.1007/s00170-019-03631-3

Cited by 26 publications

(24 citation statements)

References 15 publications

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“…The TMAZ metal has lower microhardness in both cases and the reason behind such a finding may be less content of reinforcing particles and more unreacted iron tungsten in these stagnant zones. The same situation was with FSW on AA2024 where precipitates grew larger in the TMAZ and therefore lost their reinforcing effect by overaging [ 33 ].…”

Section: Resultsmentioning

confidence: 95%

In-Situ Al-Mg Alloy Base Composite Reinforced by Oxides and Intermetallic Compounds Resulted from Decomposition of ZrW2O8 during Multipass Friction Stir Processing

Чумаевский

Zykova²,

Sudarikov³

et al. 2023

Materials

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In the presented work, the effect of friction stir processing admixing the zirconium tungstate ZrW2O8 powder on the microstructure, mechanical and tribological properties of the AA5056 Al-Mg alloy stir zone has been studied. The FSP resulted in obtaining dense composite stir zones where α-ZrW2O8 underwent the following changes: (i) high-temperature transformation into metastable β’-ZrW2O8 and (ii) decomposition into WO3 and ZrO2 oxides followed by the formation of intermetallic compounds WAl12 and ZrAl3. These precipitates served as reinforcing phases to improve mechanical and tribological characteristics of the obtained fine-grained composites. The reduced values of wear rate and friction coefficient are due to the combined action the Hall–Petch mechanism and reinforcement by the decomposition products, including Al2O3, ZrO2, β’-ZrW2O8 and intermetallic compounds such as WAl12 and ZrAl3. Potential applications of the above-discussed composites maybe related to their improved tribological characteristics, for example in aerospace and vehicle-building industries.

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Section: Resultsmentioning

confidence: 95%

In-Situ Al-Mg Alloy Base Composite Reinforced by Oxides and Intermetallic Compounds Resulted from Decomposition of ZrW2O8 during Multipass Friction Stir Processing

Чумаевский

Zykova²,

Sudarikov³

et al. 2023

Materials

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“…Further passes were performed with lower resistance to motion and lower temperatures. Such behavior is typical with multi-pass FSP when a fine-grained microstructure that results from the first pass provides less resistance and, therefore, less heat is released in further FSP passes [ 31 ].…”

Section: Resultsmentioning

confidence: 99%

In Situ Intermetallics-Reinforced Composite Prepared Using Multi-Pass Friction Stir Processing of Copper Powder on a Ti6Al4V Alloy

et al. 2022

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Multi-pass friction stir processing (FSP) was used to obtain a titanium alloy/copper hybrid composite layer by intermixing copper powder with a Ti6Al4V alloy. A macrostructurally inhomogeneous stir zone was obtained with both its top and middle parts composed of fine dynamically recrystallized α- and b-Ti grains, as well as coarse intermetallic compounds (IMCs) of Ti2Cu and TiCu2, respectively. Some b grains experienced β → α a decomposition with the formation of acicular α-Ti microstructures either inside the former b-Ti grains or at their grain boundaries. Both types of β → α a decomposition were especially clearly manifested in the vicinity of the Ti2Cu grains, i.e., in the copper-lean regions. The middle part of the stir zone additionally contained large dislocation-free b-Ti grains that resulted from static recrystallization. Spinodal decomposition, as well as solid-state amorphization of copper-rich b-Ti grains, were discovered. The FSPed stir zone possessed hardness that was enhanced by 25% as compared to that of the base metal, as well as higher strength, ductility, and wear resistance than those obtained using four-pass FSPed Ti6Al4V.

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“…Процесс FSP осуществляли на лабораторном стенде для экспериментальных исследований сварки трением с перемешиванием [3]. Использовался рабочий инструмент из жаропрочного сплава на никелевой основе ЖС6У [2].…”

Section: институт физики прочности и материаловедения со ран томскunclassified

MIKROTVERDOST'', STRUKTURNO-FAZOVOE I NAPRYaZhENNOE SOSTOYaNIYa NIKELIDA TITANA POSLE OBRABOTKI TRENIEM S PEREMEShIVANIEM

2020

Mezhdunarodnaya Konferentsiya "Fizicheskaya Mezomekhanika. Materialy S Mnogourovnevoy Ierarkhicheski Organizovannoy Strukturoy

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Towards aging in a multipass friction stir–processed АА2024

Cited by 26 publications

References 15 publications

In-Situ Al-Mg Alloy Base Composite Reinforced by Oxides and Intermetallic Compounds Resulted from Decomposition of ZrW2O8 during Multipass Friction Stir Processing

In-Situ Al-Mg Alloy Base Composite Reinforced by Oxides and Intermetallic Compounds Resulted from Decomposition of ZrW2O8 during Multipass Friction Stir Processing

In Situ Intermetallics-Reinforced Composite Prepared Using Multi-Pass Friction Stir Processing of Copper Powder on a Ti6Al4V Alloy

MIKROTVERDOST'', STRUKTURNO-FAZOVOE I NAPRYaZhENNOE SOSTOYaNIYa NIKELIDA TITANA POSLE OBRABOTKI TRENIEM S PEREMEShIVANIEM

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