Microstructure evolution and mechanical properties of rheo-squeeze casting AZ91-Ca alloy during heat treatment

Zhang, Yang; Xiao-ping, LI; Sun, Shuai; Lü, Yalin; Wu, Guohua

doi:10.1007/s41230-017-7025-y

Cited by 7 publications

(7 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The flow velocity is relatively high near the starting point. Under the strong shear rheology, the dendrites are sheared into fragments, eventually evolving into non-dendritic primary phase [25,33] , as shown in Fig. 10.…”

Section: Rheological Solidification -One Mechanism Of Microstructure mentioning

confidence: 99%

“…So, from the perspective of pressurized solidification, the closer to the starting point, the greater the pressure acting on the alloy melt. The solidification structure will become finer under greater pressure action [33] . Squeeze casting is a process of alloy melt solidification under pressure.…”

Section: Pressurized Solidification -Another Mechanism Of Microstructmentioning

confidence: 99%

See 1 more Smart Citation

Microstructure evolution of A380 aluminum alloy during rheological process under applied pressure

Wang

Xing

et al. 2019

China Foundry

View full text Add to dashboard Cite

S queeze casting can be supposed as a combination of casting and forging [1, 2]. In this process, high pressure is applied to the melt during solidification to obtain fine grains. The essence of mold-filling and feeding is rheological solidification of the alloy melt under pressure. Microstructure evolution is inevitable in this process, which affects the mold-filling and feeding in turn. Therefore, research on microstructure evolution during the rheological process under applied pressure is extremely meaningful. A great deal of scientific research has been done on the mechanism of microstructure evolution [3-10]. The basic methods of refining microstructure are: controlling nucleation, inhibiting dendrites growth, and prompting the initial solidification nucleation [3]. Based on these ideas, various techniques, such as mechanical stirring [4] , electromagnetic stirring [5] , strain induced melt activation [6] , casting using a cooling slope [7-9]

show abstract

Section: Rheological Solidification -One Mechanism Of Microstructure mentioning

confidence: 99%

Section: Pressurized Solidification -Another Mechanism Of Microstructmentioning

confidence: 99%

Microstructure evolution of A380 aluminum alloy during rheological process under applied pressure

Wang

Xing

et al. 2019

China Foundry

View full text Add to dashboard Cite

show abstract

“…Though Yang Zhang et.al. prepared AZ91-Ca alloy with rheo-Squeeze casting under heat treatment, concluded that the new casting process significantly improves the wear and mechanical properties [26]. Furthermore, the investigation continued by adding UV to the squeeze casting technique.…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, physical and mechanical properties were significantly increased [22][23]. Several researchers described that the Al-Si MMC properties are improved by the squeeze casting technique compared to the regular techniques such as stir and sand casting [24][25][26][27][28]. Yuan-Ji Shi et.al.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Characterization of Rapid Solidified Alsicumg Alloys by New CRSS Casting Method Under T6 Condition

K*¹,

kumar²

2019

IJITEE

View full text Add to dashboard Cite

Aluminum-silicon alloys acquiring extensive industrial attention due to their superior resistance to rate of wear and elevated strength to weight ratio properties. Though the properties of the materials substantially depend on the manufacturing process they involve. Thus many industries focusing on new manufacturing methods to produce high-performance alloys. In this present study, AlSi (16-18) alloys were prepared by new CRSS (combined rheo stir squeeze) casting method with rapid-solidification process under T-6 condition. CRSS-T6 as casting process enhances the microstructural and mechanical properties significantly by 40-70%. Whereas, the maximum value of hardness (179.37) was found with AlSi17Cu3.5Mg0.8 with CRSS-T6. The improvements in hardness and elastic properties were mainly ascribed to size, distribution, and morphology of Si-particles because of its manufacturing process. SEM, advanced metallurgical microstructure and EDS analysis techniques are used for the surface morphologies observation. Moreover, Brinell hardness tester and Tensometer are used for the characterization of mechanical properties

show abstract

“…The result obtained the yield strength of aged squeeze-cast AZ91 alloy is approximately proportional to its micro-hardness, which can be used to predict the mechanical properties [14]. Zhang et al [15], research on the AZ91-Ca for rheo-squeeze casting and further heat treatment at 410°C. Result obtain is the γ-(Mg17Al12) dissolved and undissolved Al2Ca phase change from connected network-like partially spheroidized.…”

Section: Introductionmentioning

confidence: 99%

Effect of semi-solid forming temperature and heat treatment on mechanical properties and microstructure of Mg-Al-Zn Alloy (AZ91D) for automotive light application

Kamal

Bazilah

Idris

et al. 2020

JMES

View full text Add to dashboard Cite

Magnesium alloy usage in manufacturing engineering components resulting in weight reduction and as a consequence, reduction in fuel and energy consumption. Magnesium has a relatively low density and roughly 30% lighter than aluminum. However, magnesium is considered to be difficult to deform because of the HCP structure. In this present work, the effect of semi-solid forming temperature and heat treatment on mechanical properties of Mg-Al-Zn were investigated. Mg-Al-Zn ingot was machined into a billet and formed with three different temperatures and underwent T4 heat-treatment process. To determine the mechanical properties and microstructure of the magnesium alloy, tensile and hardness test were performed and the result indicates that the highest average maximum tensile stress was achieved at 209 MPa at 530ºC after forming with T4 heat treatment and highest hardness value was at 21.44 HRB at 560ºC. On the other hand, effect of the forming temperature gives impact to the evolution of the microstructure from large grain size (as-cast) to the smaller grains size (0.00797mm2) forming at 560°C. This relate to the extensive dynamic recrystallization (DRX) occurs during forming and Mg-Al-Zn was sensitive with heat either direct or indirect heating method.

show abstract

Microstructure evolution and mechanical properties of rheo-squeeze casting AZ91-Ca alloy during heat treatment

Cited by 7 publications

References 18 publications

Microstructure evolution of A380 aluminum alloy during rheological process under applied pressure

Microstructure evolution of A380 aluminum alloy during rheological process under applied pressure

Mechanical Characterization of Rapid Solidified Alsicumg Alloys by New CRSS Casting Method Under T6 Condition

Effect of semi-solid forming temperature and heat treatment on mechanical properties and microstructure of Mg-Al-Zn Alloy (AZ91D) for automotive light application

Contact Info

Product

Resources

About