Evaluation of the effects of variations in chemical composition on the quality of Al-Si-Mg,Al-Cu,and Al-Zn-Mg cast aluminum alloys |
| |
Authors: | N D Alexopoulos Sp G Pantelakis |
| |
Affiliation: | (1) Laboratory of Technology and Strength of Materials, Department of Mechanical and Aeronautical Engineering, University of Patras, 26500 Patras, Greece |
| |
Abstract: | The effect of slight variations in chemical composition on the quality of cast aluminum alloys from three different major
alloy systems was evaluated. For the evaluation of the alloy quality, an index Q
D adjusted to damage tolerance requirements that are currently involved for the design of advanced lightweight structures is
used. The quality index Q
D accounts for tensile strength and ductility as well as for material failure through yielding or fracture. For this investigation,
experimental results obtained for variations in chemical composition of the alloy systems Al-Si-Mg, Al-Cu, and Al-Zn-Mg were
exploited. In total, castings from 37 different batches from 10 aluminum alloys, varying in chemical composition, were evaluated.
Quality characterization and alloy quality ranking were made by evaluating results of 512 tensile tests using the index Q
D as well as, for comparison, the quality index Q, which is currently used by the industry. The results obtained involving the index Q
D seem to be more realistic, from the viewpoint of damage tolerance design requirements. |
| |
Keywords: | cast aluminum alloys chemical composition damage tolerance quality evaluation quality index |
本文献已被 SpringerLink 等数据库收录! |
|