Evaluation of Subsequent Heat Treatment Routes for Near-β Forged TA15 Ti-AlloyReport as inadecuate


Evaluation of Subsequent Heat Treatment Routes for Near-β Forged TA15 Ti-Alloy


Evaluation of Subsequent Heat Treatment Routes for Near-β Forged TA15 Ti-Alloy - Download this document for free, or read online. Document in PDF available to download.

State Key Lab of Solidification Processing, Department of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, China





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Academic Editor: Shankar M.L. Sastry

Abstract TA15 Ti-alloy is widely used to form key load-bearing components in the aerospace field, where excellent service performance is needed. Near-β forging technology provides an attractive way to form these complicated Ti-alloy components but subsequent heat treatment has a great impact on the final microstructure and mechanical properties. Therefore evaluation and determination of the heat treatment route is of particular significance. In this paper, for the near-β forged TA15 alloy, the formation and evolution of microstructures under different subsequent heat treatment routes annealing, solution and aging, toughening and strengthening were studied and the cooling mode after forging was also considered. Then, the type and characteristics of the obtained microstructures were discussed through quantitative metallographic analysis. The corresponding mechanical properties tensile, impact toughness, and fracture toughness and effects of microstructural characteristics were investigated. Finally, for a required microstructure and performance a reasonable heat treatment route was recommended. The work is of importance for the application and development of near-β forging technology. View Full-Text

Keywords: TA15 Ti-alloy; near-β forging; heat treatment; microstructural characteristic; mechanical properties TA15 Ti-alloy; near-β forging; heat treatment; microstructural characteristic; mechanical properties





Author: Zhichao Sun * , Huili Wu and He Yang

Source: http://mdpi.com/



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