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Nano Research & Applications
ISSN 2471-9838
E u r o S c i C o n C o n f e r e n c e o n
Nanotechnology &
Smart Materials
O c t o b e r 0 4 - 0 6 , 2 0 1 8
Am s t e r d a m , N e t h e r l a n d s
Nanotechnology & Smart Materials 2018
Microstructure characterization and evaluation of mechanical
properties for friction welded En-24 alloy steel
Vijay Gaikwad
1
, Vijay Hiwarkar
2
, Vinayak Pawar
1
and
Rajkumar Singh
1
1
KCTI-Bharat Forge Ltd, India
2
Defence Institute of Advance Technology, India
C
ontinuous-drive friction welding is performed on EN-24 steel rods in the present study. The effect of post-weld heat treatment
on microstructure and mechanical properties of the as-welded rods is examined with the particular focus on three different
regions of weldment such as weld interface (WI), heat affected zone (HAZ), and unaffected base zone; and the results are
compared with that of base metal. The microstructural characterization at WI and HAZ revealed martensitic structure and fine
pearlite and ferrite respectively, in as-welded samples whereas it changes after post weld heat treatment (PWHT) to tempered
martensite and coarse pearlite with ferrite, respectively. Martensitic structure at WI of as-welded samples imparts high hardness
at the cost of low ductility while tempered martensite at WI of PWHT samples causes substantial decrease in hardness with
improved ductility. However tensile strength of weld joint is achieved nearly equal to that of base metal.
vijay.gaikwad@bharatforge.comNano Res Appl Volume:4
DOI: 10.21767/2471-9838-C6-025