Grain refinement and superplastic flow in an aluminum alloy processed by high-pressure torsion

2005 ◽  
Vol 408 (1-2) ◽  
pp. 141-146 ◽  
Author(s):  
Sergey V. Dobatkin ◽  
Elena N. Bastarache ◽  
Genki Sakai ◽  
Takeshi Fujita ◽  
Zenji Horita ◽  
...  
Keyword(s):  
High Pressure ◽  
Aluminum Alloy ◽  
Grain Refinement ◽  
High Pressure Torsion ◽  
Superplastic Flow

Superplastic flow in a nanostructured aluminum alloy produced using high-pressure torsion

2009 ◽  
Vol 500 (1-2) ◽  
pp. 170-175 ◽  
Author(s):  
Cheng Xu ◽  
Sergey V. Dobatkin ◽  
Zenji Horita ◽  
Terence G. Langdon
Keyword(s):  
High Pressure ◽  
Aluminum Alloy ◽  
High Pressure Torsion ◽  
Superplastic Flow

scholarly journals Grain refinement and superplastic flow in a fully lamellar Ti-6Al-4V alloy processed by high-pressure torsion

2018 ◽  
Vol 732 ◽  
pp. 398-405 ◽  
Author(s):  
Wenjing Zhang ◽  
Hua Ding ◽  
Pedro Henrique R. Pereira ◽  
Yi Huang ◽  
Terence G. Langdon
Keyword(s):  
High Pressure ◽  
Grain Refinement ◽  
High Pressure Torsion ◽  
Superplastic Flow ◽  
Fully Lamellar

GRAIN REFINEMENT AND MICROSTRUCTURE EVOLUTION IN ALUMINUM A2618 ALLOY BY HIGH-PRESSURE TORSION

2016 ◽  
Vol 78 (6-9) ◽  
Author(s):  
Intan Fadhlina Mohamed ◽  
Seungwon Lee ◽  
Kaveh Edalati ◽  
Zenji Horita ◽  
Shahrum Abdullah ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
High Pressure ◽  
Grain Refinement ◽  
Room Temperature ◽  
Rotation Speed ◽  
High Pressure Torsion ◽  
Applied Pressure ◽  
Saturation Level ◽  
Microstructural Refinement ◽  
Average Grain Size

This work presents a study related to the grain refinement of an aluminum A2618 alloy achieved by High-Pressure Torsion (HPT) known as a process of Severe Plastic Deformation (SPD). The HPT is conducted on disks of the alloy under an applied pressure of 6 GPa for 1 and 5 turns with a rotation speed of 1 rpm at room temperature. The HPT processing leads to microstructural refinement with an average grain size of ~250 nm at a saturation level after 5 turns. Gradual increases in hardness are observed from the beginning of straining up to a saturation level. This study thus suggests that hardening due to grain refinement is attained by the HPT processing of the A2618 alloy at room temperature.

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