Mechanical Properties Comparison of Different La Content in AZ91

In order to improve the comprehensive mechanics performance of AZ91 magnesium alloy which is used as car's material, the La element was added in AZ91 magnesium alloy and specimens was prepared by powder metallurgy method. The influence of La on microstructure, hardness and compression performan...

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Bibliographic Details
Published in:Key engineering materials 2014-08, Vol.620, p.67-72
Main Authors: Yang, Hansong, He, Chun Xia, Liu, Jian Xiu, Zhang, Yan Yan
Format: Article
Language:English
Subjects:
Compression testers
Compression tests
Electronics
Grain refinement
Hardness
Magnesium base alloys
Mechanical properties
Powder metallurgy
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Summary:In order to improve the comprehensive mechanics performance of AZ91 magnesium alloy which is used as car's material, the La element was added in AZ91 magnesium alloy and specimens was prepared by powder metallurgy method. The influence of La on microstructure, hardness and compression performance of AZ91 a magnesium alloy specimen was studied using metallographic electronic microscope, hardness tester, universal tension and compression testing machine. The experimental results show that when amount of La's addition is 1.2%, its mechanical performance is best, hardness is 67.1 HV, compressive strength is 115.8 MPa, increased respectively by 20.0% and 29.5% compared the AZ91 magnesium alloy substrate, and the grain refinement effect of AZ91 magnesium alloy is the best at this time.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/www.scientific.net/KEM.620.67