| Development of High Strength and Toughness Non-Heated Al–Mg–Si Alloys for High-Pressure Die-Casting |
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| 作者姓名： | Ling-Yang Yuan Pan-Wen Han Ghulam Asghar Bao-Liang Liu Jin-Ping Li Bin Hu Peng-Huai Fu Li-Ming Peng |
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| 作者单位： | National Engineering Research Center of Light Alloy Net Forming and Key State Laboratory of Metal Matrix Composites,School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Shanghai Light Alloy Net Forming National Engineering Research Center Co.,Ltd,Shanghai 201615,China;General Motors China Science Laboratory,Shanghai 201206,China;National Engineering Research Center of Light Alloy Net Forming and Key State Laboratory of Metal Matrix Composites,School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Shanghai Light Alloy Net Forming National Engineering Research Center Co.,Ltd,Shanghai 201615,China |
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| 摘 要： | Based on the 3 factors and 3 levels orthogonal experiment method, compositional effects of Mg, Si, and Ti addition on the microstructures, tensile properties, and fracture behaviors of the high-pressure die-casting Al-x Mg-y Si-z Ti alloys have been investigated. The analysis of variance shows that both Mg and Si apparently infl uence the tensile properties of the alloys, while Ti does not. The tensile mechanical properties are comprehensively infl uenced by the amount of eutectic phase(α-Al + Mg_2Si), the average grain size, and the content of Mg dissolved into α-Al matrix. The optimized alloy is Al-7.49 Mg-3.08 Si-0.01 Ti(wt%), which exhibits tensile yield strength of 219 MPa, ultimate tensile strength of 401 MPa, and elongation of 10.5%. Furthermore, contour maps, showing the relationship among compositions, microstructure characteristics, and the tensile properties are constructed, which provide guidelines for developing high strength and toughness Al–Mg–Si–Ti alloys for high-pressure die-casting.
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Development of High Strength and Toughness Non-Heated Al-Mg-Si Alloys for High-Pressure Die-Casting |
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| Ling-Yang Yuan,Pan-Wen Han,Ghulam Asghar,Bao-Liang Liu,Jin-Ping Li,Bin Hu,Peng-Huai Fu,Li-Ming Peng.Development of High Strength and Toughness Non-Heated Al-Mg-Si Alloys for High-Pressure Die-Casting[J].Acta Metallurgica Sinica(English Letters),2021,34(6):845-860. |
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| Authors: | Ling-Yang Yuan Pan-Wen Han Ghulam Asghar Bao-Liang Liu Jin-Ping Li Bin Hu Peng-Huai Fu Li-Ming Peng |
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| Abstract: | Based on the 3 factors and 3 levels orthogonal experiment method,compositional effects of Mg,Si,and Ti addition on the microstructures,tensile properties,and fracture behaviors of the high-pressure die-casting Al-xMg-ySi-zTi alloys have been investigated.The analysis of variance shows that both Mg and Si apparently influence the tensile properties of the alloys,while Ti does not.The tensile mechanical properties are comprehensively influenced by the amount of eutectic phase(α-A1 + Mg2Si),the average grain size,and the content of Mg dissolved into α-Al matrix.The optimized alloy is Al-7.49 Mg-3.08Si-0.01Ti (wt％),which exhibits tensile yield strength of 219 MPa,ultimate tensile strength of 401 MPa,and elongation of 10.5％.Furthermore,contour maps,showing the relationship among compositions,microstructure characteristics,and the tensile properties are constructed,which provide guidelines for developing high strength and toughness Al-Mg-Si-Ti alloys for high-pressure die-casting. |
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| Keywords: | Al-Mg-Si-Ti alloy Microstructure Tensile properties High strength and toughness Contour maps |
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