Indentation creep behavior of AE42 and Ca-containing AE41 alloys |
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| Affiliation: | 1. National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China;2. Centre for Advanced Materials Processing and Manufacturing, School of Mechanical and Materials Engineering, The University of Queensland, St Lucia, Queensland, 4072, Australia;1. Univ. Lille, FRE 3723 – LML – Laboratoire de Mécanique de Lille, F-59000 Lille, France;2. Mines Douai, LGCgE, Douai, France;3. Unité Matériaux et Transformations, UMR CNRS 8207, Université de Lille 1, F-59655 Villeneuve d’Ascq, France;4. Universidad de Carabobo, Facultad de Ingeniería, Laboratorio de Materiales, Valencia, Venezuela;1. State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China;2. Yangzhou hongfu Aluminium Co. Ltd, Yangzhou 100049, PR China;3. University of Chinese Academy of Sciences, Beijing 100049, PR China;1. State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China;2. University of Chinese Academy of Sciences, Beijing 100049, PR China |
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| Abstract: | The indentation creep behavior of AE42 and 0.4–1.2 wt.% Ca-containing AE41 alloys was studied. The microstructure was analyzed by an optical microscope, XRD and SEM equipped EDS before and after indentation creep. The results indicate that the creep resistance of AE41 alloys is improved with the addition of Ca. The indentation creep resistance of Ca-containing AE41 alloys is better than that of AE42 at 150 °C and 175 °C. The microstructure analysis shows that the Al11Nd3 phase in AE42 is prone to decompose above 150 °C, which deteriorates its creep resistance behavior. Ca-containing AE41 alloys have good indentation creep resistance because of the formation of heat-resistant phase Al2Ca in the alloys. |
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