Deformation characteristics of Al-4043 alloy

作者：Saad G; Fayek S A; Fawzy A^*; Soliman H N; Mohammed Gh

来源：Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 2010, 527(4-5): 904-910.

DOI：10.1016/j.msea.2009.09.018

• Stress-strain
• Strain rate
• Deformation temperature

AI-Si alloy is one of the most important and popular materials for lightweight automotive components production. This paper reports on structure and tensile properties of Al-4043 alloy. The results showed that the microstructure of Al-4043 alloy is characterized by the presence of spherically shaped Si particles (<3 mu m) uniformly distributed within the Al-matrix. The tensile tests were performed at various strain rates (SR, (epsilon) over dot ) ranged from 5.4 x 10(-5) to 1.2 x 10(-3) s(-1) in the temperature range 300-573 K. This study revealed that upon increasing, the yield stress sigma(y0.2), the fracture stress sigma(f) and work hardening coefficient chi p were increased according to the Norton power law sigma = C(epsilon) over dot(m), while the total strain epsilon(T) was decreased. increasing the deformation temperature T gave the reverse of the above results. The On the other hand, mean value of the energy, Q, activating the deformation process and the strain rate sensitivity index m were determined to clarify the deformation mechanism. Attention has been paid to the role of other phases such as Fe, Cu and Ti on the structure and tensile behavior of Al-4043 alloy.

• 出版日期2010-2-15