The influence of Ti on the microstructure and tensile properties of cast Al–4.5Cu–0.3Mg alloy

Kamali, Hamed; Emamy, M.; Razaghian, A.

doi:10.1016/j.msea.2013.10.032

Cited by 18 publications

(11 citation statements)

References 19 publications

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“…Thus, the grain refinement of the A206 alloy by adding the Al5Ti1B master alloy can be expected to increase the mechanical properties of A206 castings via reducing the amount of solidification defects such as hot tearing, micro-shrinkage and micro-segregation. These results are in good agreement with the report from H. Kamali et al 5 who reported that Ti additions of 0.05-0.3 % showed no significant effect on the grain size, although the minimum Ti mass fractions of 0.05 % was necessary to eliminate the hot-tearing defects.…”

Section: Grain-size Measurementssupporting

confidence: 93%

“…[1][2][3][4][5][6] Due to their superior mechanical properties, Al-Cu alloys can be used in many areas such as aircraft construction, military field and automobile manufacturing. 4 Grain refinement of Al-Cu alloys significantly improves the microstructure and mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

“…13 The A206 alloy is a well-known Al-Cu casting alloy and a research on grain refinement with this alloy indicated that a proper grain refinement can be achieved with a 0.15-0.30 % titanium mass fraction of the final cast part. 14 On the contrary, in recent years other researchers 3,5,[7][8][9] showed that modern grain refiners containing Al-Ti and B are more suitable for an acceptable grain refinement of A206 alloys if the Ti content is lower than 0.15 %.…”

Section: Introductionmentioning

confidence: 99%

“…Despite a number of studies conducted in the past to investigate the grain refinement of Al-Cu alloys, 3,[5][6][7][8][9]12,[15][16] studies on the effects of the holding time and melt stirring on the grain-refinement process have not been published. Therefore, in this work, the optimum amount of the grain refiner for the A206 alloy, using an Al5Ti1B rod-shape grain refiner, in combination with the holding time and melt stirring, was studied.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of the effect of holding time and melt stirring on the grain refinement of an A206 alloy

Akar¹,

Tanyel²,

Kocatepe³

et al. 2016

Mater. Tehnol.

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Effects of melt stirring and holding time were studied with an Al-4.5 % of mass fractions of Cu (A206) alloy. The optimum level of a grain refiner was determined in conjunction with both continuously stirred and non-stirred melts during the holding time. Results showed that a mass fraction of a Ti addition of as low as 0.03 % was sufficient to obtain the 82 μm average grain size, while a Ti addition exceeding the mass fraction of 0.03 % showed no significant effect on the grain size of castings. The grain refinement tends to fade with a long holding time in a non-stirred liquid. The results also showed that an effective grain refinement of the A206 alloy can be achieved with a long holding time as long as the liquid alloy is continually stirred.Keywords: grain refinement, melt stirring, holding time, Al-4.5Cu alloy, A206 alloy Raziskan je bil vpliv me{anja in~asa zadr`evanja taline zlitine Al-4,5 % masnega dele`a Cu (A206). Dolo~ena je bila optimalna koli~ina udrobnjevalca zrn, v povezavi s stalnim me{anjem ali brez me{anja taline med zadr`evanjem. Rezultati so pokazali, da je bilo`e 0,03 % masnega dele`a dodatka Ti, dovolj za doseganje povpre~ne velikosti zrn 82 μm, medtem ko dodatek Ti ve~ji od 0,03 % masnega dele`a, ni pokazal vpliva na velikost zrn ulitkov. U~inkovitost drobnjenja zrn se zmanj{a pri dolgih~asih zadr`anja in brez me{anja taline. Rezultati so pokazali {e, da je mogo~e dose~i u~inkovito drobnjenje zrn tudi pri dolgih~asih zadr`evanja, dokler se talina stalno me{a. Klju~ne besede: drobnjenje zrn, me{anje taline,~as zadr`evanja, zlitina Al-4.5Cu, zlitina A206

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Section: Grain-size Measurementssupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Investigation of the effect of holding time and melt stirring on the grain refinement of an A206 alloy

Akar¹,

Tanyel²,

Kocatepe³

et al. 2016

Mater. Tehnol.

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“…For instance, D'Elia et al [7] added titanium-boron grain refiner to a B206 alloy, with the result being a significant decrease in grain size and a change from a dendritic to globular morphology. Kamali et al [8] also found similar results for an Al-4.5Cu-0.3Mg alloy, where the addition of 0.05 wt% Ti reduced the grain size and improved both hot tearing resistance and room temperature strength. In another study, Major and Sigworth [4] investigated the relationship between chemical composition, heat treatment and mechanical properties of various 206-type alloys.…”

Section: Introductionmentioning

confidence: 58%

Microstructure Characterization and Thermal Analysis of Aluminum Alloy B206 During Solidification

Haghdadi

Phillion

Maijer

2015

Metall Mater Trans A

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The solidification kinetics of a high strength B206 aluminum casting alloy as a function of cooling rates between 1 and 15 K/min has been characterized through a combination of differential scanning calorimetry (DSC), scanning electron microscopy (SEM), and optical microscopy. Three different peaks were detected in the DSC analysis, which corresponded to the nucleation of an α-Al solid solution, an Al-Cu-Fe intermetallic and the eutectic phases. The presence of these phases was confirmed using a coupled scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS) analysis. The α-Al nucleation temperature was found to be independent of cooling rate while the eutectic and the intermetallic formation temperatures were depressed by up to 20 K. The evolution of the fraction solid, particularly during the solidification of α-Al was also affected by the cooling rate in such a way that slower cooling was accompanied by a higher fraction solid at a given temperature. Concurrently, microscopy was used in order to quantify the variation in secondary dendrite arm spacing (SDAS) with cooling rate for use in numerical simulations of casting processes.

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Microstructure and Mechanical Properties Correlation of Al-4.28Cu-1.60 Mg Alloy Micro-Alloyed with Titanium

Bhuyan

Borah²

2023

J. of Materi Eng and Perform

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The influence of Ti on the microstructure and tensile properties of cast Al–4.5Cu–0.3Mg alloy

Cited by 18 publications

References 19 publications

Investigation of the effect of holding time and melt stirring on the grain refinement of an A206 alloy

Investigation of the effect of holding time and melt stirring on the grain refinement of an A206 alloy

Microstructure Characterization and Thermal Analysis of Aluminum Alloy B206 During Solidification

Microstructure and Mechanical Properties Correlation of Al-4.28Cu-1.60 Mg Alloy Micro-Alloyed with Titanium

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