کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
798819 | 1466780 | 2007 | 5 صفحه PDF | دانلود رایگان |
In order to understand the characteristics of micro metal forming, tensile and bending tests were conducted on both aluminum 1100 O-temper and brass 26000(1/2) hard (H02) to investigate the influence of size effects on flow stress and formability. In this study, it has been observed that the yield strength and tensile strength decrease as T/D (thickness/average grain diameter) ratio decreases until T/D approaches one. However, as the average grain diameter is greater than thickness (T/D < 1), the yield stress increases with large deviation as the T/D ratio decreases from the results of bending test. In addition, the stretchability (formability) decreases with decrease of T/D ratio on both aluminum 1100 O-temper and Brass 26000(1/2) hard (H02). According to the research results of this study, formability and flow stress of micro forming can be expressed as functions of T/D ratio.
Journal: Journal of Materials Processing Technology - Volume 184, Issues 1–3, 12 April 2007, Pages 42–46