Influence of Parameters on Macro/Micro-Structure of TC11 Alloy by Laser Direct Deposition

Xin Yong Gong; Ming Kun Liu; Yan Tao Liu; Yong Zhong Zhang

doi:10.4028/www.scientific.net/AMM.281.496

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 281Influence of Parameters on Macro/Micro-Structure...

Influence of Parameters on Macro/Micro-Structure of TC11 Alloy by Laser Direct Deposition

Abstract:

Understanding the effect of process parameters on microstructure is crucial to control or optimize microstructure for laser direct deposition process. Four thin-wall samples of TC11 titanium alloy are deposited with different process parameters. They showed different macro/micro-structure and mechanical properties. The reason is analyzed by temperature field of samples which are simulated by ANSYS software. Results show that, deposition with low laser power and slow scanning speed is conducive to reducing molten pool temperature and soaking time in β-phase region, refining original β grain and improving the plastic properties of the deposited parts. Deposition with high laser power and rapid scanning speed, combined with interlayer stay, is helpful to increase the cooling rate within α+β phase region, refine intragranular α lamellar and improve the tensile strength of deposited parts.

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Periodical:

Applied Mechanics and Materials (Volume 281)

Pages:

496-499

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.281.496

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Online since:

January 2013

Authors:

Xin Yong Gong, Ming Kun Liu, Yan Tao Liu, Yong Zhong Zhang

Keywords:

Laser Direct Deposition, Macrostructure, Microstructure, Process Parameter, Property

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References

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