Effect of Temperature on Grain Size in AA6063 Aluminum Alloy Subjected to Repetitive Corrugation and Straightening

  • N. Thangapandian
  • S. Balasivanandha Prabu
  • K. A. Padmanabhan


The influence of processing temperature on grain size reduction in AA 6063 aluminum alloy subjected to repetitive corrugation and straightening (RCS) is investigated in this work. The aluminum alloy was processed by RCS at different temperatures (room temperature, 100 °C, 200 °C and 300 °C) till the maximum number of passes possible before failure and the mechanical properties such as tensile strength and hardness were measured. The grain size and their misorientation of grains of the processed samples were analyzed using the electron backscattered diffraction. The results indicated that the transformation of low-angle grain boundaries to high-angle grain boundaries and dislocation tangles were highly dependent on the strain imparted, which could be controlled by selecting the proper processing temperature. As a result, the mechanical properties are affected. In particular, the room temperature tensile strength and hardness values of the processed material decrease with increasing processing temperature.


Repetitive corrugation and straightening Strain Grain size reduction/refinement EBSD Strength Hardness 



This work was supported financially by the Department of Science and Technology, Government of India (No. SB/FTP/ETA-104/2012). The authors gratefully acknowledge the help of Prof. V. Subramanya Sarma, IITM, Chennai, for the EBSD measurements.


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Copyright information

© The Chinese Society for Metals (CSM) and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • N. Thangapandian
    • 1
  • S. Balasivanandha Prabu
    • 2
  • K. A. Padmanabhan
    • 2
  1. 1.Department of Mechanical EngineeringSt. Joseph’s Institute of TechnologyChennaiIndia
  2. 2.Department of Mechanical Engineering, College of Engineering GuindyAnna UniversityChennaiIndia

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