Eutectic bonding of austenitic stainless steel 316L to magnesium alloy AZ31 using copper interlayer

The eutectic bonding of magnesium alloy (AZ31) to austenitic stainless steel alloy (316L) was performed using pure Cu interlayers. The effect of hold time on the microstructural developments across the joint region and the related effect on bond shear strength were studied at a bonding temperature o...

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Bibliographic Details
Published in:International journal of advanced manufacturing technology 2011-07, Vol.55 (1-4), p.235-241
Main Authors: Elthalabawy, Waled M., Khan, Tahir I.
Format: Article
Language:English
Subjects:
Adhesive joints
Aluminum
Austenitic stainless steels
Bond strength
Bonding strength
CAE) and Design
Computer-Aided Engineering (CAD
Copper
Engineering
Eutectic alloys
Eutectics
Industrial and Production Engineering
Interlayers
Intermetallic phases
Magnesium alloys
Magnesium base alloys
Mechanical Engineering
Media Management
Original Article
Shear strength
Solidification
Stainless steel
Steel alloys
Ternary systems
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Summary:The eutectic bonding of magnesium alloy (AZ31) to austenitic stainless steel alloy (316L) was performed using pure Cu interlayers. The effect of hold time on the microstructural developments across the joint region and the related effect on bond shear strength were studied at a bonding temperature of 530°C. The bonding process took place through a sequential occurrence of solid-state diffusion of Cu into the magnesium alloy, eutectic phase formation, interlayer dissolution, and isothermal solidification. A (Mg–Cu–Al) ternary intermetallic phase formed within the joint and concentrated into the center of the bond during the solidification stage increasing the hardness value to a maximum average of VHN313 while the maximum recorded bond shear strength was 57 MPa achieving 69% of the AZ31 shear strength and about three to four times of the adhesive joints.
ISSN:0268-3768
1433-3015
DOI:10.1007/s00170-010-3026-3