TY - JOUR
T1 - Influence of microstructural characteristics on mechanical properties of ADC12 aluminum alloy
AU - Okayasu, M.
AU - Ota, K.
AU - Takeuchi, S.
AU - Ohfuji, H.
AU - Shiraishi, T.
N1 - Funding Information:
The authors would like to express their appreciation to Mr. H. Totsukawa of Hiroshima Aluminum Industry Co. Ltd for technical support. This work was supported by grants from the Light Metal Educational Foundation Inc. and the Japanese Government (Ministry of Education, Science, Sports and Culture ).
PY - 2014/1/13
Y1 - 2014/1/13
N2 - The effects of microstructural characteristics on the mechanical properties of an aluminum alloy (ADC12: Al-Si11.3-Cu1.9-Zn0.8-Fe0.8-Mg0.2-Mn0.2) produced by various casting technologies are studied experimentally and numerically. Six different casting processes are employed: gravity casting, cold-chamber die-casting, hot-chamber die-casting, squeeze casting, twin-rolled continuous casting and heated-mold continuous casting. Microstructural characteristics, dislocation density and defect density vary depending on the casting method, owing to differences in solidification rate, casting pressure and injection speed. The material characteristics of the samples affect their mechanical properties. Multiple regression analysis is carried out to find equations to predict tensile strength using five independent factors: secondary dendrite arm spacing, microporosity rate, diameter of eutectic structures, aspect ratio of eutectic structures and dislocation density. All these factors influence the tensile properties, although to different degrees. The estimated values of tensile strength are in good agreement with experimental results.
AB - The effects of microstructural characteristics on the mechanical properties of an aluminum alloy (ADC12: Al-Si11.3-Cu1.9-Zn0.8-Fe0.8-Mg0.2-Mn0.2) produced by various casting technologies are studied experimentally and numerically. Six different casting processes are employed: gravity casting, cold-chamber die-casting, hot-chamber die-casting, squeeze casting, twin-rolled continuous casting and heated-mold continuous casting. Microstructural characteristics, dislocation density and defect density vary depending on the casting method, owing to differences in solidification rate, casting pressure and injection speed. The material characteristics of the samples affect their mechanical properties. Multiple regression analysis is carried out to find equations to predict tensile strength using five independent factors: secondary dendrite arm spacing, microporosity rate, diameter of eutectic structures, aspect ratio of eutectic structures and dislocation density. All these factors influence the tensile properties, although to different degrees. The estimated values of tensile strength are in good agreement with experimental results.
KW - Aluminum alloy
KW - Casting process
KW - Mechanical property
KW - Microstructure
KW - Regression analysis
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U2 - 10.1016/j.msea.2013.10.098
DO - 10.1016/j.msea.2013.10.098
M3 - Article
AN - SCOPUS:84888120078
SN - 0921-5093
VL - 592
SP - 189
EP - 200
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
ER -