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Metallurgical characterizations and mechanical properties on friction welding of Incoloy 800H joints

Published online by Cambridge University Press:  02 May 2016

K. Anand ,
S. Arun Kumar ,
K. Tamilmannan ,
P. Sathiya  and
B. Arivazhagan
K. Anand
Affiliation:
School of Engineering and Technology, Indira Gandhi National Open University, New Delhi, 110068, India
S. Arun Kumar
Affiliation:
Department of Production Engineering, National Institute of Technology, Tiruchirappalli, Tamilnadu, 620015, India
K. Tamilmannan
Affiliation:
School of Engineering and Technology, Indira Gandhi National Open University, New Delhi, 110068, India
P. Sathiya*
Affiliation:
Department of Production Engineering, National Institute of Technology, Tiruchirappalli, Tamilnadu, 620015, India
B. Arivazhagan
Affiliation:
Materials Technology Division, Indira Gandhi Centre for Atomic Research, Kalpakkam, Chennai, Tamilnadu, 603102, India
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

The present work discusses about the mechanical and metallurgical properties of Incoloy 800 H friction welded joints. The process parameters namely friction pressure, friction time, upsetting pressure, upset time, and rotational speeds were varied from low level to high level to study their effects on the properties of the weldments. The tensile tests were carried out at four different temperatures namely at room temperature, 550, 650, and 750 °C. From the results, it is observed that as the testing temperature increased, there was a reduction in tensile strength of welds. The friction welds had higher hardness than the base metals. This was due to the formation of secondary phases (γ′ and M23C6) in friction welds. The tensile and impact fracture surfaces were further analyzed through SEM and finally the individual effects of the parameters with respect to the microstructures variation in the welds were studied.

Keywords

Incoloy 800 Hfriction weldinghardnesstoughnessmicrostructure
Type
Articles
Information
Journal of Materials Research , Volume 31 , Issue 14 , 28 July 2016 , pp. 2173 - 2185
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Copyright
Copyright © Materials Research Society 2016 

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Footnotes

Contributing Editor: Jürgen Eckert

References

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