JJMIE Volume 10 Number 1, March.2016 ISSN （JJMIE卷10 1号,March.2016 ISSN）.pdf

Volume 10 Number 1, March.2016 JJMIE ISSN 1995-6665 Pages 19- 26 Jordan Journal of Mechanical and Industrial Engineering The Effect of Adding Different Percentages of Manganese (Mn) and Copper (Cu) on the Mechanical Behavior of Aluminum Lina M. Shehadeh1 , Issam S. Jalham2 * 1 MSc student Industrial Engineering Dept, University of Jordan, Amman 11942 Jordan 2 Professor in the Industrial Engineering Dept, University of Jordan, Amman 11942 Jordan. Received 11 May 2015 Accepted 1 Oct 2015 Abstract In the present investigation, aluminum cast alloys were produced, age hardened, and tested after adding a varying manganese content (from 0.1to 0.5%) and Cu content from (1.5-7%) with constant Mg-Si-Fe composition and Al as the dominant constituent. Results showed that the addition of Mn to the alloy increased the tensile properties and hardness up to 0.6 percent for both the as-cast and age-hardened conditions, while their impact energies decreased. On the other hand, the addition of Cu to the alloy increased the tensile and hardness properties and decreased the impact energy. © 2016 Jordan Journal of Mechanical and Industrial Engineering. All rights reserved Keywords: Hardness, Artificial Hardening, Impact, Toughness, Tensile .