Effect of Melt Stirring Methods on Solidification Microstructure and Mechanical Properties of Semi-solid A356-0.5Ce Alloy AITranslate
Abstract AITranslate
The semi-solid A356-0.5Ce （mass fraction） alloy ingots with ideal tensile properties and solidifi- cation microstructure were prepared by the combined process of intermittent reversible electromagnetic stirring and low superheat casting. The effects of melt stirring methods （without stirring, 30 Hz single-way continuous electromagnetic stirring, 30 Hz intermittent reversible electromagnetic stirring） on grain size and morphology of primary a phase were investigated by OM. The results show that with 30 Hz intermit- tent reversible electromagnetic stirring, the primary grains are well refined and spheroidized with average equal-area circle diameter of 35.9 ~m and shape factor of 0.79. In addition,the tensile properties and frac- ture morphology of the alloy ingots with three stirring methods were studied by SEM. The experimental results show that compared with the conventional casting, the tensile strength of the alloys obtained by 30 Hz single-way continuous electromagnetic stirring and 30 Hz intermittent reversible electromagnetic stir- ring increases from 125 MPa to 143 MPa and 176 MPa,the elongation increases from 4.2% to 5.4% and 7.8% ,and the fracture mechanism is changed from brittle cleavage fracture to ductile fracture.
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Basic Information:
DOI：
Chinese Library Classification Number:TG146[金属学及工艺—金属材料]
Citation Information:
The semi-solid A356-0.5Ce （mass fraction） alloy ingots with ideal tensile properties and solidifi- cation microstructure were prepared by the combined process of intermittent reversible electromagnetic stirring and low superheat casting. The effects of melt stirring methods （without stirring, 30 Hz single-way continuous electromagnetic stirring, 30 Hz intermittent reversible electromagnetic stirring） on grain size and morphology of primary a phase were investigated by OM. The results show that with 30 Hz intermit- tent reversible electromagnetic stirring, the primary grains are well refined and spheroidized with average equal-area circle diameter of 35.9 ~m and shape factor of 0.79. In addition,the tensile properties and frac- ture morphology of the alloy ingots with three stirring methods were studied by SEM. The experimental results show that compared with the conventional casting, the tensile strength of the alloys obtained by 30 Hz single-way continuous electromagnetic stirring and 30 Hz intermittent reversible electromagnetic stir- ring increases from 125 MPa to 143 MPa and 176 MPa,the elongation increases from 4.2% to 5.4% and 7.8% ,and the fracture mechanism is changed from brittle cleavage fracture to ductile fracture.
quote
| GB/T 7714-2015 | [1] CHEN Tao, LIU Zheng, LIU Xiao-mei. Effect of Melt Stirring Methods on Solidification Microstructure and Mechanical Properties of Semi-solid A356-0.5Ce Alloy[J]. Rare Metals and Cemented Carbides, 2017(4): 47-51. |
| MLA | [1] CHEN Tao, et al., "Effect of Melt Stirring Methods on Solidification Microstructure and Mechanical Properties of Semi-solid A356-0.5Ce Alloy." Rare Metals and Cemented Carbides, no. 4, 2017, pp. 47-51. |
| APA | [1] CHEN Tao, LIU Zheng, & LIU Xiao-mei. (2017). Effect of Melt Stirring Methods on Solidification Microstructure and Mechanical Properties of Semi-solid A356-0.5Ce Alloy. Rare Metals and Cemented Carbides(4), 47-51. |
| IEEE | [1] CHEN Tao, LIU Zheng, and LIU Xiao-mei, "Effect of Melt Stirring Methods on Solidification Microstructure and Mechanical Properties of Semi-solid A356-0.5Ce Alloy," Rare Metals and Cemented Carbides, no. 4, pp. 47-51, 2017. keywords: {semi-solid A356-0.5Ce alloy;stirring method;intermittent reversible electromagnetic stirring solidification microstructure;tensile property;fracture morphology} |