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Effect of Cerium-Rich Mischmetal Content on the Mechanical Properties and Fracture Morphology of New 5XXX Series Aluminum Alloys

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Abstract:

Preparation process of new 5XXX series aluminum alloys containing cerium-rich mischmetal wasintroduced .The effects of cerium-rich mischmetal on fracture morphology and mechanical properties of aluminium alloy were investigated in detail by scanning electronic microscope (SEM), and tensile test.The results show that alloys tensile strength and elongation with the increase of the content of mischmetal first increased, then down. When the mischmetal content is increased up to 0.30%, the tensile strength and elongation are 115 MPa and 25.9% respectively, meanwhile, the fractograph exhibited typical ductile dimple fracture pattern. Then the alloy performance is best. Mischmetal added into the alloy can improve the mechanical properties of materials, but too much mischmetal will induce the decrease in the material performance.Becase it may generate more the coarse Al11(Ce ,La)3 particle.

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Periodical:

Applied Mechanics and Materials (Volumes 152-154)

Pages:

239-243

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.152-154.239

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Online since:

January 2012

Authors:

Hua Shen, He Liang, Guang Chun Yao, Wei Dong Yang, Xiao Dong Ren

Keywords:

Cerium-Rich Mischmetal, Fracture Morphology, Mechanical Property

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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