Strengthening mechanisms in an Al–Mg alloy

Huskins, Emily L.; Cao, Benyi; Ramesh, K.T.

doi:10.1016/j.msea.2009.11.056

Cited by 307 publications

(154 citation statements)

References 34 publications

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“…On the other hand, for PC samples second phase particles feature relatively large interparticle distance and their contribution is estimated at 50 MPa [2].…”

Section: Discussionmentioning

confidence: 98%

“…Commercial coarse-grained Al-Mg (5xxx series) alloys are broadly applied in demanding structural applications due to their economic price, low density, good strength, corrosion resistance and high formability [1,2,3]. Since precipitation strengthening is inefficient in the case of Al-Mg alloys [4], the enhancement in their mechanical properties can be achieved either by work hardening or grain size refinement below 1µm.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Mechanical behaviour of ultrafine grained Al-Mg alloys obtained by different processing routes

Bazarnik¹,

Lewandowska²,

Kurzydłowski³

2012

Archives of Metallurgy and Materials

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The subject of the study were microstructure and mechanical properties of two commercial 5xxx aluminium alloys obtained by Plastic Consolidation (PC) of nanopowders and Hydrostatic extrusion (HE). It has been observed that HE samples exhibit a higher strength whereas PC samples higher ductility. The two types of samples also differ in the type and intensity of serrations on stress-strain curves. The microstructures of samples processed were found to differ significantly in terms of size and shape of grains, grain boundary characteristics, second phase particles content and density of dislocations. The results are discussed in terms of the influence of microstructure on mechanical behaviour of 5xxx aluminium alloys processed by severe plastic deformation.Keywords: Transmission Electron Microscopy, Portevin-Le Chatelier effect, Strengthening mechanisms, Ultrafine grained W poniższej pracy badano właściwości mechaniczne dwóch komercyjnych ultra drobnoziarnistych stopów aluminium serii 5xxx otrzymanych przez Konsolidację Plastyczną (PC) nanoproszków oraz przez Wyciskanie Hydrostatyczne (HE). Mikrostruktury badanych próbek znacząco się różniły, w szczególności pod względem wielkości ziarna i charakteru granic ziaren. Badania właściwości mechanicznych pokazały, że obie próbki wykazują znakomite właściwości wytrzymałościowe (w obu próbkach granica plastyczności przekracza 450 MPa), jednakże próbki HE wykazują wyższą wytrzymałość, podczas gdy próbki PC większą plastyczność. Wyniki przedstawiono w formie analizy wpływu mikrostruktury na właściwości mechaniczne stopów aluminium serii 5xxx otrzymanych technikami dużego odkształcenia plastycznego. Wysokie właściwości mechaniczne przypisano różnorodnym mechanizmom umacniającym i funkcjonującym w tych próbkach, włączając w to: umocnienie roztworowe, umocnienie wydzieleniowe oraz umocnienie granicami ziaren i dyslokacyjne. Uzyskane wyniki wskazują na to, że mikrostruktura ma znaczący wpływ nie tylko na właściwości mechaniczne, ale również na typ ząbkowania na krzywych rozciągania.

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“…On the other hand, for PC samples second phase particles feature relatively large interparticle distance and their contribution is estimated at 50 MPa [2].…”

Section: Discussionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Mechanical behaviour of ultrafine grained Al-Mg alloys obtained by different processing routes

Bazarnik¹,

Lewandowska²,

Kurzydłowski³

2012

Archives of Metallurgy and Materials

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show abstract

“…In Al-Mg alloys, the friction resistance is believed to be dominated by a general type of solid solution strengthening that is attributed to the interaction between mobile dislocations and stationary solute atoms [29]. This first type of solid solution strengthening is controlled by the magnesium solute content, which is estimated to be $ 100 MPa for $ 5 wt% Mg at ambient temperatures [29,30].…”

Section: Discussionmentioning

confidence: 99%

Strengthening mechanisms in a Zr-modified 5083 alloy deformed to high strains

Malopheyev

Kaibyshev

2015

Materials Science and Engineering: A

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“…On the other hand, solute Cu atoms in the matrix can have contribution to the yield strength. The yield strength contribution (∆σ SS ) of solute atoms can be estimated according to Equation (5) [23,24]:…”

Section: Influence Of Cu On Yield Strength At Elevated Temperaturementioning

confidence: 99%

The Influence of Cu Addition on Dispersoid Formation and Mechanical Properties of Al-Mn-Mg 3004 Alloy

Zhang

Chen

2018

Metals

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Abstract:The effect of Cu addition on dispersoid precipitation, mechanical properties and creep resistance was investigated in an Al-Mn-Mg 3004 alloy. The addition of Cu promoted dispersoid precipitation by increasing the number density and decreasing the size of dispersoids. Metastable β -Mg 2 Si and Q-AlCuMgSi precipitates were observed during the heating process and both could provide favorable nucleation sites for dispersoid precipitation. The addition of Cu improved the thermal stability of dispersoids during a long-term thermal holding at 350 • C for 500 h. Results of mechanical testing show that the addition of Cu remarkably improved the hardness at room temperature, as well as the yield strength and creep resistance at 300 • C, which was mainly attributed to dispersoid strengthening and Cu solid solution strengthening. The yield strength contribution at 300 • C was quantitatively evaluated based on the dispersoid, solid solution and matrix contributions. It was confirmed that dispersoid strengthening is the main strengthening mechanism in the experimental alloys.

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Strengthening mechanisms in an Al–Mg alloy

Cited by 307 publications

References 34 publications

Mechanical behaviour of ultrafine grained Al-Mg alloys obtained by different processing routes

Mechanical behaviour of ultrafine grained Al-Mg alloys obtained by different processing routes

Strengthening mechanisms in a Zr-modified 5083 alloy deformed to high strains

The Influence of Cu Addition on Dispersoid Formation and Mechanical Properties of Al-Mn-Mg 3004 Alloy

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