The effect of hot isostatic pressing on the microstructure and tensile properties of an unmodified A356-T6 cast aluminum alloy

Ran, Guang; Zhou, Jinxiong; Wang, Q.G.

doi:10.1016/j.jallcom.2005.11.019

Cited by 66 publications

(31 citation statements)

References 15 publications

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“…In general, it is known that many properties of castings such as yield point, ultimate tensile strength and elongation are improved by reduction of their grain size and their dendrite arm spacing (DAS). [1][2][3][4][5] The DAS of castings is strongly affected by the cooling rate 4) during solidification, and becomes fine by high cooling rate. Usually, the gravity die casting is applied to large and thick products, so it is difficult to increase the cooling rate due to the thermal extraction constraints.…”

Section: Introductionmentioning

confidence: 99%

Effects of Mechanical Vibration on Cooling Rate and DAS of AC4C Aluminum Alloy Gravity Die Castings

Omura

Murakami

et al. 2009

Mater. Trans.

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Gravity die casting of AC4C aluminum alloy with mechanical vibration (0-120 Hz) was conducted. Columnar rod specimens (25 mm Â L210 mm) were cast to investigate the effect of mechanical vibration on the cooling rate and the dendrite arm spacing of AC4C aluminum alloy castings. The cooling rate increased by imposition of the mechanical vibration, and increased with the increase of the vibration frequency. When the mechanical vibration imposed, the mold temperature increased quickly and reached higher temperature compared with no vibration condition. The dendrite arm spacing in outer region of the specimen decreased by mechanical vibration, and decreased with the increase of the vibration frequency. In the case without mechanical vibration, the specimen showed smooth surface. But the surface of specimen became rough by the imposition of the mechanical vibration.

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Section: Introductionmentioning

confidence: 99%

Effects of Mechanical Vibration on Cooling Rate and DAS of AC4C Aluminum Alloy Gravity Die Castings

Omura

Murakami

et al. 2009

Mater. Trans.

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“…Although fractured silicon particles can be seen in Figs. 3a and 4a, it seems that the presence of shrinkage porosity (indicated by arrows) in gravity-cast A356 samples acts as [14,16,17]. The presence of high levels of porosity in gravity-cast samples, before and after T6 treatment, is responsible for the reduction of the tensile properties.…”

Section: Resultsmentioning

confidence: 99%

Mechanical properties and fracture behavior of thixoformed, rheocast and gravity-cast A356 alloy

Tahamtan

Boostani

Nazemi

2009

Journal of Alloys and Compounds

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“…19 In cast Al alloy development, the key to success has been controlling and manipulating the size, morphology, distribution and composition of the IMPs. 20 However, while modifiers, such as Sr 21 and Be 22 can be used to control grain growth, they will not affect the morphology and composition of the IMPs. Therefore, mechanical properties can be improved without affecting the corrosion resistance of the alloy, and, in the absence of a surface treatment, potential applications for Al alloys continue to be restricted.…”

Section: Discussionmentioning

confidence: 99%

“…The resultant microstructural developments define the subsequent tribological and corrosion properties of the alloys. Typically, coarse particles with sizes larger than 1 mm will deteriorate properties, 20 such as toughness and fatigue performance, and are detrimental to the corrosion resistance of the alloys. This is also dependent on the alloying elements present.…”

Section: Intermetallicsmentioning

confidence: 99%

Impact of intermetallic precipitates on the tribological and/or corrosion performance of cast aluminium alloys: a short review

Culliton¹,

Betts²,

Kennedy³

2013

International Journal of Cast Metals Research

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The role of various intermetallic precipitates (IMPs), or secondary phase particles, in governing the wear and corrosion performance characteristics of cast aluminium alloys is outlined in this brief review. Such alloys are especially important in transport applications where their low weight, low cost and recyclability make them very attractive. However, alloy wear and/or corrosion behaviour often limit their industrial application, and more work needs to be carried out to extend their use into other areas. Careful control of IMP nucleation and growth rates may be beneficial, especially in alloys exposed to corrosive environments. Silicon, copper and magnesium are all important elements for enhanced mechanical strength and tribological performance but often to the detriment of alloy corrosion resistance. Other elements such as iron may also play a significant role in deleterious IMP formation. Use of dispersoids based on novel (quasicrystals) seed alloys with similar lattice characteristics to the a-Al matrix may result in further exploitation of these alloys.

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The effect of hot isostatic pressing on the microstructure and tensile properties of an unmodified A356-T6 cast aluminum alloy

Cited by 66 publications

References 15 publications

Effects of Mechanical Vibration on Cooling Rate and DAS of AC4C Aluminum Alloy Gravity Die Castings

Effects of Mechanical Vibration on Cooling Rate and DAS of AC4C Aluminum Alloy Gravity Die Castings

Mechanical properties and fracture behavior of thixoformed, rheocast and gravity-cast A356 alloy

Impact of intermetallic precipitates on the tribological and/or corrosion performance of cast aluminium alloys: a short review

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