Temperature effects on the tensile properties of cast and heat treated aluminum alloy A319

Rincón, Ernesto J.; López, H. F.; Cisneros, M.M.; Mancha, H.

doi:10.1016/j.msea.2009.05.022

Cited by 98 publications

(38 citation statements)

References 15 publications

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“…The number of dimples was significantly increased at 300 ºC, proving the fully ductile fracture above 200 ºC, which is a consistent finding based on instability criteria. In a similar study to this [14], it was found that A319 alloy softens in the interval of 270 to 320 ºC, where SDAS ranged from 20-50 μm which agrees well the results for the case of SDAS 25 μm. In a study by Wang [23] it is suggested that in alloys with large SDAS, the failure occurs prior to necking at RT as a result of the high damage accumulation rate caused by particle cracking.…”

Section: Deformation and Fracture Behaviorsupporting

confidence: 87%

“…%) in the EN AC-46000 alloy, which limits the intrinsic ductility of the matrix. The tensile instability point of the fine and coarse microstructure approaches the same value at higher temperature (above 400 ºC), indicating that necking occurrence is determined by stress relaxation during plastic deformation instead of damage accumulation in particles [14]. Two typical modes of damage accumulation found in the present study are single micro cracks and microcrack clusters, see Figure 12 It has been proposed that the rate of damage formation in single particles at different strain is approximately constant.…”

Section: Deformation and Fracture Behaviorsupporting

confidence: 59%

“…have marked effects on the tensile properties of Al-Si casting alloys at room and at elevated temperatures [14]. The presence of defects is associated with significantly degraded tensile ductility which consequently shortens the plastic strain region.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

“…Rincon et al [13,14] investigated the tensile and deformation behavior of A319 die cast alloy, in both as-cast and heat treated conditions at elevated temperatures up to 400 ºC. Several researchers studied the effect of trace element additions on the strength improvement of Al-Si-Cu-Mg [15][16][17][18], Al-Si-Mg [19], Al-Si-Cu [20] and Al-Si alloys [21] at elevated temperatures.…”

Section: Introductionmentioning

confidence: 99%

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High temperature tensile deformation behavior and failure mechanisms of an Al–Si–Cu–Mg cast alloy — The microstructural scale effect

2015

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In this study the high temperature tensile deformation behavior of a commercial Al-Si-Cu-Mg cast alloy was investigated. The alloy was cast with two different cooling rates resulted in average secondary dendrite arm spacing of 10 and 25 μm, which are typical of the microstructure scale obtained from high pressure die casting and gravity die casting. Tensile tests were performed at different strain rates (10 -4 s -1 to 10 -1 s -1 ) and over a wide temperature range from ambient temperature to 500 ºC. The fine microstructure had superior tensile strength and ductility compared to the coarse microstructure at any given temperature. The coarse microstructure showed brittle fracture up to 300 ºC; the fracture mode in the fine microstructure was fully ductile above 200 ºC. The fraction of damaged particles was increased by raising the temperature and/or by microstructure coarsening. Cracks arising from damaged particles in the coarse microstructure were linked in a transgranular-dominated fashion even at 500 ºC. However, in the fine microstructure alloy the inter-dendritic fracture path was more prevalent. When the temperature was raised to 300 ºC, the concentration of alloying elements in the dendrites changed. The dissolution rates of Cu-and Mg-bearing phases were higher in the fine microstructure.

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Section: Deformation and Fracture Behaviorsupporting

confidence: 87%

Section: Deformation and Fracture Behaviorsupporting

confidence: 59%

Section: Mechanical Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

High temperature tensile deformation behavior and failure mechanisms of an Al–Si–Cu–Mg cast alloy — The microstructural scale effect

2015

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“…The alloys contain Fe and Mn as impurities and various microstructural phases have been found, including eutectic (acicular) Si and intermetallic phases such as θ-(Al 2 Cu), Mg 2 Si, π-(Al 8 Mg 3 FeSi 6 ), α-(Al 15 (Mn,Fe) 3 Si 2 ) and β-(Al 5 FeSi) [3]. The A319 alloys are heat treatable using artificial aging and their strengthening is usually through precipitation hardening by θ -Al 2 Cu and Mg 2 Si [2].…”

Section: Introductionmentioning

confidence: 99%

Effects Of T6 Heat Treatment With Double Solution Treatment On Microstructure, Hardness And Corrosion Resistance Of Cast Al-Si-Cu Alloy

Wiengmoon¹,

Sukchot²,

Tareelap³

et al. 2015

Archives of Metallurgy and Materials

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Effects of T6 heat treatment with double solution treatment on microstructure, hardness and corrosion resistance of a cast A319 (Al-4.93wt%Si-3.47wt%Cu) alloy were investigated. The T6 heat treatment comprised of the first solution treatment at 500±5• C for 8 h, the second solution treatment in the temperature range of 510 to 530±5• C for 2 h followed by water quenching (80• C), and artificial aging at 170• C for 24 h followed by water quenching (80 • C). Microstructure of the alloy was studied by optical microscopy and electron microscopy, Rockwell hardness was measured, and corrosion resistance in 0.1 M NaCl aqueous solution was determined by a potentiodynamic technique. The results revealed that the T6 heat treatment with double solution treatment led to an improvement in corrosion resistance and comparable macrohardness as compared to those obtained from the case of single solution treatment. The second solution treatment at 520• C is the optimum leading to relatively low corrosion current density without substantial drawbacks on breakdown potential or the width of passive range.Keywords: Al-Si-Cu alloy, heat treatment, age hardening, microstructure, hardness, corrosion resistance W pracy badano wpływ obróbki termicznej T6 połączonej z podwójnym przesycaniem na mikrostrukturę, twardość oraz odporność na korozję stopu A316 (Al-4,93Si-3,47Cu w % wag.) otrzymanego metodą odlewania. Obróbkę termiczną T6 przeprowadzono w następujący sposób: w pierwszej kolejności stop poddano przesycaniu w temperaturze 500±5• C przez 8 godzin, a następnie w zakresie temperatur od 510 do 530±5• C przez 2 godziny, hartowanie wodą (80 • C) oraz sztuczne starzenie w 170• C przez 24 godziny i ponowne hartowanie wodą (80 • C). Mikrostrukturę stopu badano metodami mikroskopii optycznej i mikroskopii elektronowej. Pomiar twardości stopu wykonano metodą Rockwella. Odporność stopu na korozję w roztworze wodnym 0.1 M NaCl wyznaczono metodą potencjodynamiczną. Otrzymane wyniki wykazały, że obróbka termiczna T6 z podwójnym przesycaniem prowadzi do poprawy makrotwardości oraz odporności materiału na korozję w porównaniu do stopu poddanego pojedynczemu przesycaniu. Stwierdzono także, iż drugie przesycanie w temperaturze 520• C jest optymalne i prowadzi do stosunkowo niskiej gęstości prądu korozyjnego bez znaczących odchyleń potencjału rozkładowego lub szerokości zakresu pasywnego.

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Mechanical Properties of A356‐CNTCast Nano Composite Produced by a Special Compocasting Route

Abbasipour¹,

Niroumand²,

Monirvaghefi³

2012

Supplemental Proceedings

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Temperature effects on the tensile properties of cast and heat treated aluminum alloy A319

Cited by 98 publications

References 15 publications

High temperature tensile deformation behavior and failure mechanisms of an Al–Si–Cu–Mg cast alloy — The microstructural scale effect

High temperature tensile deformation behavior and failure mechanisms of an Al–Si–Cu–Mg cast alloy — The microstructural scale effect

Effects Of T6 Heat Treatment With Double Solution Treatment On Microstructure, Hardness And Corrosion Resistance Of Cast Al-Si-Cu Alloy

Mechanical Properties of A356‐CNTCast Nano Composite Produced by a Special Compocasting Route

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