کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5456170 1514655 2017 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
On estimating high-cycle fatigue life of cast Al-Si-Mg-(Cu) alloys from tensile test results
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
On estimating high-cycle fatigue life of cast Al-Si-Mg-(Cu) alloys from tensile test results
چکیده انگلیسی
Five methods to estimate fatigue life from tensile data have been compared by using four datasets from cast Al-Si-Mg-(Cu) alloys in the literature. Results have shown that none of the five methods provide reliable results. A new method to estimate the S-N curve from tensile data has been developed by using the Basquin parameters from seventy-two S-N curves collected from the literature. Analysis has shown a distinct relationship between the Basquin exponent and the ratio of tensile elongation to ductility potential, i.e., quality index, QT. Moreover, the ratio of the Basquin strength coefficient to tensile strength expected in castings with no casting defects has been found to increase linearly with QT. Based on these findings, a step-by-step procedure has been introduced to estimate the S-N curve of cast Al-Si-Mg-(Cu) alloys. The Basquin parameters estimated by using the new method have provided more reliable fits to the same datasets tested for the five methods. These results support the hypothesis that the minimum elongation requirement in industrial specifications is a de facto fatigue life requirement.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 688, 14 March 2017, Pages 9-15
نویسندگان
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