Effects of Cu on Microstructure, Mechanical Properties and Damping Capacity of As-Cast Mg-3%Ni Alloy

Shu Qun Chen; Xuan Pu Dong; Xiao Qing Xiong; Rong Ma; Zi Tian Fan

doi:10.4028/www.scientific.net/AMR.463-464.52

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 463-464Effects of Cu on Microstructure, Mechanical...

Effects of Cu on Microstructure, Mechanical Properties and Damping Capacity of As-Cast Mg-3%Ni Alloy

Abstract:

The effects of Cu addition on microstructure, mechanical properties and damping capacity of Mg-3%Ni based alloy were investigated by using tensile tests, X-ray diffraction, scanning electron microscope and dynamic mechanical analyzer. The results show that Cu addition could reduce the size of -Mg dendrites and a new binary phase Mg2Cu can be identified, which mostly distributes among the inter-dendrites in the form of typical lamellar-like eutectic microstructure and improve the mechanical properties. In low strain amplitude, with the increase of Cu addition, the damping capacities of Cu contained alloys change little, while in high strain range, the internal friction values decrease gradually with the grain refinement and increasing content of eutectic phase.

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Periodical:

Advanced Materials Research (Volumes 463-464)

Pages:

52-57

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.463-464.52

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Online since:

February 2012

Authors:

Shu Qun Chen, Xuan Pu Dong, Xiao Qing Xiong, Rong Ma, Zi Tian Fan

Keywords:

Damping Capacity, Granato-Lücke Theory, Mechanical Property, Mg-3%Ni Alloy

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