The correlation between the recrystallization texture and subsequent isothermal grain growth in a friction stir processed rare earth containing magnesium alloy

Abstract Magnesium and its alloys are extensively used in the defence, aerospace and automotive industries, owing to their excellent mechanical properties. But there is a requirement of corrosion prevention treatment before using it for applications, since the corrosion resistance of Mg alloy is poor. In this work, a study on the mechanical properties of friction stir welded ZE41 rare earth magnesium alloy thick plates of 15mm and 25mm, was carried out. A metallographic examination and mechanical tests were conducted on both the welds. Furthermore, Plasma Electrolytic Oxidation (PEO), a surface conversion treatment was carried out on both the base material as well as on the friction stir butt joints. X-ray diffraction and scanning electron microscopy analysis were carried out on all the samples, with and without coating. The coated and uncoated samples were assessed by potentiodynamic polarisation (PDP) tests and electrochemical impedance spectroscopy (EIS) to study the electrochemical corrosion behaviour. An outer porous layer and an inner dense layer, have been identified from the SEM images. From the corrosion tests results it was revealed that there was an improvement in the corrosion resistance of both the base metal as well as the weldments by the PEO coating process.

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Friction stir spot welding of rare-earth containing ZEK100 magnesium alloy sheets

Materials & Design (1980-2015) ◽

10.1016/j.matdes.2013.12.034 ◽

2014 ◽

Vol 56 ◽

pp. 750-754 ◽

Cited By ~ 32

Author(s):

H.M. Rao ◽

R.I. Rodriguez ◽

J.B. Jordon ◽

M.E. Barkey ◽

Y.B. Guo ◽

...

Keyword(s):

Rare Earth ◽

Magnesium Alloy ◽

Spot Welding ◽

Friction Stir Spot Welding ◽

Friction Stir

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Microstructure, texture, and mechanical properties of friction stir spot welded rare-earth containing ZEK100 magnesium alloy sheets

Materials Science and Engineering A ◽

10.1016/j.msea.2014.09.010 ◽

2014 ◽

Vol 618 ◽

pp. 637-644 ◽

Cited By ~ 23

Author(s):

R.I. Rodriguez ◽

J.B. Jordon ◽

H.M. Rao ◽

H. Badarinarayan ◽

Wei Yuan ◽

...

Keyword(s):

Mechanical Properties ◽

Rare Earth ◽

Magnesium Alloy ◽

Friction Stir ◽

Spot Welded

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Corrosion behaviour of friction stir welded rare earth magnesium alloy ZE41 under salt spray test

10.1063/5.0068221 ◽

2021 ◽

Author(s):

N. Sivashanmugam ◽

K. L. Harikrishna ◽

S. R. Koteswara Rao ◽

A. K. Lakshminarayanan

Keyword(s):

Rare Earth ◽

Magnesium Alloy ◽

Corrosion Behaviour ◽

Salt Spray ◽

Salt Spray Test ◽

Friction Stir

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Microstructure and mechanical properties of AE42 rare earth-containing magnesium alloy prepared by friction stir processing

Materials Characterization ◽

10.1016/j.matchar.2019.02.008 ◽

2019 ◽

Vol 150 ◽

pp. 52-61 ◽

Cited By ~ 7

Author(s):

Yuanyuan Jin ◽

Kuaishe Wang ◽

Wen Wang ◽

Pai Peng ◽

Sha Zhou ◽

...

Keyword(s):

Mechanical Properties ◽

Rare Earth ◽

Magnesium Alloy ◽

Friction Stir Processing ◽

Friction Stir ◽

Microstructure And Mechanical Properties

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Development of grain size/ texture graded microstructures through friction stir processing and subsequent cold compression of a rare earth bearing magnesium alloy

Materials Science and Engineering A ◽

10.1016/j.msea.2021.141190 ◽

2021 ◽

pp. 141190

Author(s):

A.M. Jamili ◽

A. Zarei-Hanzaki ◽

H.R. Abedi ◽

P. Minarik

Keyword(s):

Grain Size ◽

Rare Earth ◽

Magnesium Alloy ◽

Friction Stir Processing ◽

Friction Stir ◽

Cold Compression

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Development of fresh and fully recrystallized microstructures through friction stir processing of a rare earth bearing magnesium alloy

Materials Science and Engineering A ◽

10.1016/j.msea.2019.138837 ◽

2020 ◽

Vol 775 ◽

pp. 138837 ◽

Cited By ~ 5

Author(s):

A.M. Jamili ◽

A. Zarei-Hanzaki ◽

H.R. Abedi ◽

M. Mosayebi ◽

R. Kocich ◽

...

Keyword(s):

Rare Earth ◽

Magnesium Alloy ◽

Friction Stir Processing ◽

Friction Stir

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Friction Stir Processed Rare Earth Containing Magnesium Alloy for High Temperature Application

Materials Science Forum ◽

10.4028/www.scientific.net/msf.710.235 ◽

2012 ◽

Vol 710 ◽

pp. 235-240 ◽

Cited By ~ 7

Author(s):

M. Govindaraju ◽

K. Prasad Rao ◽

Chakkingal Uday ◽

K. Balasubramanian ◽

Comondore Ravindran

Keyword(s):

Rare Earth ◽

High Temperature ◽

Magnesium Alloy ◽

Base Metal ◽

Grain Morphology ◽

Stir Zone ◽

Second Phase ◽

Friction Stir ◽

Temperature Application ◽

Zone Microstructure

Friction stir processing was performed on rare earth containing magnesium alloy AE42 with the aim of improving the mechanical properties. The resultant stir zone mechanical and metallurgical properties were analyzed to determine the application temperature of the zone. Stir zone microstructure was refined to 5 micron and the grain morphology was completely changed. Second phase intermetallics Al11RE3 Al2RE were refined to submicron level tiny pieces and homogenously distributed throughout magnesium matrix. As a major achievement, both toughness and strength of the stir zone was improved by 15 to 25%. High temperature properties up to 250°C were better than base metal. The stir zone was capable of withstanding more temperature and stress than the base metal.

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