The effect of grain refining and oxide inclusion on the fluidity of Al–4.5Cu–0.6Mn and A356 alloys

Kwon, Young-Dong; Lee, Zin-Hyoung

doi:10.1016/s0921-5093(03)00504-5

Cited by 70 publications

(23 citation statements)

References 4 publications

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“…This phenomenon probably is related to increase of B-based intermetallics with increasing the amount of grain refiner. This is in accordance with the previous findings [75][76][77] where the addition of grain refiner increased the flowability of the liquid. The more the sphericity, the more globular particles are in the structure.…”

Section: Image Analysissupporting

confidence: 94%

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Effects of grain refining and modification on the microstructural evolution of semi-solid 356 alloy /

Nafisi¹

2006

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Semi-solid metal (SSM) processing is gaming momentum as an effective alternative to the classical manufacturing processes of casting and forging. This category takes advantages of both liquid and solid forming processes. In the absence of shear force, semi-solid slug is similar to a solid, self standing, while with the application of shear force, the viscosity is reduced appreciably and the material flows like a liquid; Thixotropic-"

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Section: Image Analysissupporting

confidence: 94%

“…• Dahle and Kwon [76,77] confirmed the above results. As mentioned by Chai et al [78], increasing grain refinement and modifiers postpone dendrite coherency point.…”

Section: » Fluiditysupporting

confidence: 56%

Effects of grain refining and modification on the microstructural evolution of semi-solid 356 alloy /

Nafisi¹

2006

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“…The microstructure of alloy AlSi7Fe1 in cast state comprises phases Si and Al5SiFe as a component of eutectic (α-Al+Al5SiFe+Si). In order to DOI 10.12776 [4][5]. Finely dispersed refractory particles, which create a suspension in the melt, simultaneously nucleating centers and the surfactants.…”

Section: Introductionmentioning

confidence: 99%

MICROSTRUCTURES, MECHANICAL PROPERTIES INGOT AlSi7Fe1 AFTER BLOWING OXYGEN THROUGH MELT

Finkelstein¹,

Чикова²,

Schaefer³

2017

Acta Metall Slovaca

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The new technology of producing ingot of AlSi7Fe1 high-strength is described. This new technology consists in saturation of melt with hydrogen, with further blowing with oxygen. Studied the microstructure, phase composition and mechanical properties of ingot after blowing oxygen of melt and ingot obtained with the traditional method. Have suggested that in liquid aluminum alloy AlSi7Fe1 because of blowing with oxygen arise refractory particles Al2O3. These particles Al2O3 further in crystallization serve as a modifier of the microstructure of ingot. Mostly observed modifications of eutectic phases. Thus saturation of melt with hydrogen, with further blowing with oxygen provides an increased tensile strength of ingot AlSi7Fe1.

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“…[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%

“…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%

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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The effect of grain refining and oxide inclusion on the fluidity of Al–4.5Cu–0.6Mn and A356 alloys

Cited by 70 publications

References 4 publications

Effects of grain refining and modification on the microstructural evolution of semi-solid 356 alloy /

Effects of grain refining and modification on the microstructural evolution of semi-solid 356 alloy /

MICROSTRUCTURES, MECHANICAL PROPERTIES INGOT AlSi7Fe1 AFTER BLOWING OXYGEN THROUGH MELT

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

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