Effect of coated B4C reinforcement on mechanical properties of squeeze cast A356 composites

A research program was simulated to study the effects of pouring temperature, squeeze pressure and die temperature on the tensile, elongation and hardness properties of AZ91D magnesium alloys using anycasting software. The curves with different processing parameters on mechanical properties have been painted. The results indicated that mechanical properties increased firstly, then decreased when the pouring temperature increased to 670°C, and gradually increased with the increasing of squeeze pressure. The affect laws of mould temperature are similar as ones of pouring temperature. Eventually found that the squeeze casting got better mechanical properties(σb= 225MPa, δ= 3.6%, Vickers hardness=62) on the pouring temperature 670°C, mold temperature 180°C, holding pressure 120Mpa, pressure duration 25s.

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Effect of Heat Treatment on the Mechanical Properties of Squeeze-Cast Al–5Si–3Cu Alloy for Automotive Applications

Transactions of the Indian Institute of Metals ◽

10.1007/s12666-019-01562-x ◽

2019 ◽

Vol 72 (5) ◽

pp. 1129-1132 ◽

Cited By ~ 1

Author(s):

M. G. Akhil ◽

S. Preenu ◽

S. Hari ◽

M. Ravi

Keyword(s):

Mechanical Properties ◽

Heat Treatment ◽

Automotive Applications ◽

Squeeze Cast

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Developing high performance mechanical properties at elevated temperature in squeeze cast Al-Cu-Mn-Fe-Ni alloys

Materials Characterization ◽

10.1016/j.matchar.2019.01.022 ◽

2019 ◽

Vol 150 ◽

pp. 128-137 ◽

Cited By ~ 9

Author(s):

Bo Lin ◽

Wenxin Zhang ◽

Xiaoping Zheng ◽

Yuliang Zhao ◽

Zhaohui Lou ◽

...

Keyword(s):

Mechanical Properties ◽

Elevated Temperature ◽

High Performance ◽

Ni Alloys ◽

Squeeze Cast

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Mechanical Properties and Fracture Behavior of Indirect Squeeze-Cast A354 Alloy Using Local Pressurization

Materials Science Forum ◽

10.4028/www.scientific.net/msf.850.502 ◽

2016 ◽

Vol 850 ◽

pp. 502-510

Author(s):

Hai Jun Liu ◽

Lie Jun Li ◽

Jian Wei Niu ◽

Ji Xiang Gao ◽

Xue Wen Chen

Keyword(s):

Mechanical Properties ◽

Tensile Properties ◽

Fracture Behavior ◽

Eutectic Silicon ◽

Solidification Rate ◽

Fracture Morphology ◽

Shrinkage Cavity ◽

Squeeze Cast ◽

Ductile Mode ◽

Eutectic Si

The effect of local pressurization on mechanical properties and fracture behavior of indirect squeeze-cast A354 alloy has been investigated. As compared to conventional process, the porosity and shrinkage cavity for heavy sectioned squeeze castings were improved by the indirect squeeze casting, while its tensile properties were inferior to other parts of the casting. That is mainly due to that inhomogeneous eutectic Si particles within strip, angular and fragment shapes distribute in bulky α-Al cells, which is caused by slower solidification rate. After T6 treatment, the fragmentation and spheroidization of the eutectic silicon happened. Under this situation, the effect of fragmentation on α-Al matrix reduced. Tensile properties of the casting (both local pressurization part and non-local pressurization part) were enhanced greatly, by 36.8% and 25.4%, respectively. Fracture analysis results show that the type of fracture morphology is changed from mixed mode of brittle cleavage and ductile to ductile mode after T6-treatment.

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