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Fracture behavior of laser-clad joint of Stellite 21 on AISI 316L stainless steel

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Title Fracture behavior of laser-clad joint of Stellite 21 on AISI 316L stainless steel
 
Creator GANESH, P
MOITRA, A
TIWARI, P
SATHYANARAYANAN, S
KUMAR, H
RAI, SK
KAUL, R
PAUL, CP
PRASAD, RC
KUKREJA, LM
 
Subject alloy
layers
power
laser cladding
graded cladding
clad interface
stellite
stainless steel
fatigue
impact test
 
Description Present paper paper describes microstructural and mechanical characterization of laser-clad composite joint made of Stellite 21 and type 316L stainless steel (SS). The study has been broadly performed on two kinds of laser-clad specimens viz. (i) involving direct deposition of Stellite 21 on SS and (ii) involving gradient in chemical composition across substrate/clad interface. Both kinds of specimens exhibited nearly similar tensile strength, which was higher than that of SS in the interface region. Inter-dendritic carbides provided low energy fracture path in laser-clad deposits of Stellite 21. Both direct and graded interfaces of laser-clad specimens exhibited superior fatigue strength than the SS substrate. Instrumented impact testing brought out distinct difference in the mode of crack propagation across direct and the graded clad specimens. In contrast to initiation-controlled brittle crack propagation across the interface region in "direct clad" specimens, crack propagation across "graded interface" was marked with significant plastic deformation. (C) 2010
 
Publisher ELSEVIER SCIENCE SA
 
Date 2011-07-27T23:08:27Z
2011-12-26T12:58:38Z
2011-12-27T05:48:57Z
2011-07-27T23:08:27Z
2011-12-26T12:58:38Z
2011-12-27T05:48:57Z
2010
 
Type Article
 
Identifier MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 527(16-17), 3748-3756
0921-5093
http://dx.doi.org/10.1016/j.msea.2010.03.017
http://dspace.library.iitb.ac.in/xmlui/handle/10054/7348
http://hdl.handle.net/10054/7348
 
Language en