کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
800865 1467517 2010 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Constitutive modelling and mechanical characterization of aluminium-based metal matrix composites produced by spark plasma sintering
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Constitutive modelling and mechanical characterization of aluminium-based metal matrix composites produced by spark plasma sintering
چکیده انگلیسی

Spark plasma sintering has been applied to the production of aluminium-based functionally graded material systems to be used in abrasive and high temperature conditions. The overall mechanical properties of these metal matrix composites were determined during the optimization phases of the production process by a fast and reliable identification procedure based on instrumented indentation, which can be easily performed on small specimens. The experimental information gathered from conical (Rockwell) indentation was used as input data for the calibration of the material parameters entering the elastic–plastic Drucker–Prager constitutive model. Eventually, the so identified material parameters were used to predict the result of pyramidal (Vickers) indentation, in order to validate the model selection and the output of the identification procedure. The good matching between modelling and experimental results for the different test configurations confirmed the soundness of the considered approach, especially evidenced on the light of the strong influence on the overall mechanical characteristics of the material microstructure and defectiveness resulting from the production process, which prevent the use of classical homogenization rules to evaluate the macroscopic material properties.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mechanics of Materials - Volume 42, Issue 5, May 2010, Pages 548–558
نویسندگان
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