Effect of in-situ TiC particles on hot deformation behavior of spray formed 7075 Al alloy

Liu, Hui-min and Li, Zhi-peng and Wang, Hao (2013) Effect of in-situ TiC particles on hot deformation behavior of spray formed 7075 Al alloy. Transactions of Materials and Heat Treatment (Cailiao Rechuli Xuebao), 34 (S2). pp. 173-178. ISSN 1009-6264

Abstract

The hot deformation behavior of in-situ reactive spray formed 7075+4.4%TiC Al alloy and spray formed 7075 Al alloy was studied by isothermal compression test on a Gleeble-1500 thermal-mechanical simulator. As-spray formed microstructure of 7075 Al alloy and 7075+4.4%TiC Al alloy was observed using SEM. The dynamic recrystallization mechanism during hot compression was examined using OM and the true stress-strain curves. The results show that the flow stress decreases with the increase of deforming temperature, and the dynamic recrystallization occurs at the strain rate of 0.001 s-1. The influence of in-situ TiC particles on true stress-strain curve and dynamic recrystallization temperature of spray formed 7075 Al alloy is not evident. However, the recrystallization grain growth is restrained significantly by the in-situ TiC particles.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to Published version due to publisher copyright policy. Text in Chinese
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 25 May 2014 22:55
Last Modified: 10 Dec 2014 23:24
Uncontrolled Keywords: grain growth; hot deformation; in-situ TiC particles; spray formed 7075 Al alloy
Fields of Research : 09 Engineering > 0904 Chemical Engineering > 090406 Powder and Particle Technology
09 Engineering > 0912 Materials Engineering > 091207 Metals and Alloy Materials
09 Engineering > 0915 Interdisciplinary Engineering > 091505 Heat and Mass Transfer Operations
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
URI: http://eprints.usq.edu.au/id/eprint/25232

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