Texture Modification and Ductility Enhancement in Mg Alloy Through Friction Stir Processing

Conference · Sat Jan 01 04:00:00 EST 2011

OSTI ID:1036562

Yu, Zhenzhen ^[1]; Feng, Zhili ^[1]; Choo, Hahn ^[1]; Vogel, Sven ^[2]

---

1. ORNL
2. Los Alamos National Laboratory (LANL)

The correlation between friction stir processing parameters, i.e., rotation and travel rates of the processing tool, the texture modification and ductility enhancement of an Mg alloy AZ31B was investigated. With the systematic changes in processing parameters as represented by a Zener-Hollomon parameter input, a transition of different crystallographic texture was observed through neutron diffraction measurement, which correlated well with the changes in deformation and recrystallization mechanism activated during the FSP. The variation in the texture leads to dramatic changes in the strength and ductility in the stir zone of the processed Mg plate. A maximum of three-fold increase in the ductility was achieved in the Mg alloy through FSP when the Zener-Hollomon parameter exceeds a critical value, which is associated with low rotation speed and high travel speed processing conditions.

• Research Organization: Oak Ridge National Laboratory (ORNL)
• Sponsoring Organization: EE USDOE - Office of Energy Efficiency and Renewable Energy (EE)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1036562
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALLOYS
DEFORMATION
DUCTILITY
FRICTION
MECHANICAL ENGINEERING
MODIFICATIONS
NEUTRON DIFFRACTION
PROCESSING
RECRYSTALLIZATION
ROTATION
TEXTURE
VELOCITY