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Aging Behav.ours of 8011 Al and 8011 Al/15% SiCp Composites

Journal of Minerals and Materials Characterization and Engineering 2019年第5期7卷 221-229页

作者： v. vembu Department of Mechanical Engineering Government Polytehnic College Nagercoil India

In this inv.stigation, the effect of aging on the hardness and tensile behav.or of 15% SiCp/8011 Al composites has been studied. The composites were manufactured through stir casting method. Cast ingots of the composites were hot extruded at 500°C. The composite samples were solution heat-treated at 530°C for 3 h and quenched in cold water. The aging temperature was 130°C, 150°C, 170°C, 190°C, and 210°C for aging duration of 1, 3, 5, 7 and 9 hrs respectiv.ly. The mechanical properties measured included: tensile strength, yield strength and hardness v.lues. The composites produced exhibited maximum mechanical properties at peak aged condition. These increases in mechanical properties during aging are attributed to the formation of coherent and uniform distribution SiC particles in the aluminum matrix composites. It was also observ.d that thermal modification plays an important role in retaining the ductility of composites. This result shows that a substantial improv.ment in mechanical properties has been achiev.d in the reinforced metal matrices produced after age-hardening.

关键词： 8011 Aluninum Matrix Composite Extrusion Aging Behav.or Tensile Strength Micro Hardness Response Surface Methodology (RSM)

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Heat treatment optimization for tensile properties of 8011 Al/15% SiCp metal matrix composite using response surface methodology

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Defence Technology（防务技术） 2015年第4期11卷 390-395页

作者： v.vembu G.GANESAN Department of Manufacturing Engineering Annamalai University

In this study,a mathematical model was dev.loped to optimize the heat treatment process for maximum tensile strength and ductility of aluminum(8011) silicon carbide particulate *** process parameters are solutionizing time,aging temperature,and aging *** experiments were performed on an univ.rsal testing machine according to centre rotatable design matrix.A mathematical model was dev.loped with the main and interactiv. effects of the parameters *** analysis of v.riance technique was used to check the adequacy of the dev.loped *** optimum parameters were obtained for maximum tensile *** examination shows the cracks and dimples on the fractured surfaces of heat-treated specimen.

关键词：热处理工艺优化颗粒复合材料响应曲面法拉伸性能金属基体万能试验机开发模型铝

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