Application of T-shape friction test for AZ31 and AZ80 magnesium alloys at elevated temperatures

作者：Fereshteh Saniee F^*; Badnava H; Pezeshki Najafabadi S M

来源：Materials & Design, 2011, 32(6): 3221-3230.

DOI：10.1016/j.matdes.2011.02.042

• Non-ferrous metals and alloys
• Forming
• Mechanical

T-shape side pressing experiment is a sort of friction test which, recently, is employed for evaluation of friction for bulk metal forming processes. One of important advantages of this experiment, compared with other friction tests such as the ring compression test, is the occurrence of appropriate surface enlargement during the deformation of the specimen. This paper is concerned with experimental and numerical studies on this test, when it is used for some magnesium alloys such as AZ31 and AZ80. Based on the experimental results, it was found that the friction sensitivity of T-shape experiment increased when the die edge radius decreased or the test temperature or ram velocity increased. Good repeatability of this test was also observed during experimental part of this research work. Finally, employing the flow curves gained from the compression tests and friction factors obtained from the T-shape experiments for the finite-element simulations of this test, resulted in a very good agreement between the numerical and experimental load curves.

• 出版日期2011-6