Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/9880
Title: Laser-fabricated Fe-Ni-Co-Cr-B austenitic alloy on steels. Part I. Microstructures and cavitation erosion behaviour
Authors: Kwok, CT
Cheng, FT
Man, HC 
Keywords: Cavitation erosion
Laser surface alloying
Martensitic transformability
Stacking-fault energy
Steels
Issue Date: 2001
Publisher: Elsevier
Source: Surface and coatings technology, 2001, v. 145, no. 1-3, p. 194-205 How to cite?
Journal: Surface and Coatings Technology 
Abstract: Laser surface alloying using NiCoCrB alloy (Ni-17.1% Co-19.6% Cr-14.5% Fe-3.5% B-1% C-0.9% Si) on mild steel AISI 1050 and austenitic stainless steel AISI 316L was attempted. Both steels alloyed with NiCoCrB contained austenite as the main phase, with carbides and borides as the minor phases. The maximum hardness of laser-alloyed 1050 and 316L increased to 545 and 410 Hv, respectively, with the cobalt content ranging from 4.5 to 12 wt.%. The cavitation erosion resistance Re in deionized water was determined by an ultrasonic vibration system. Re was found to increase with the Co content in the alloyed layer, reaching a value 4.4- and 12-fold that of the substrate for 1050 and 316L, respectively. The increase in Re was attributed to a decrease in the stacking-fault energy and enhancement of strain-induced martensitic transformability due to the presence of Co. Increase in hardness due to the presence of carbides and borides and a refined microstructure resulting from laser treatment also contributed to an enhanced resistance.
URI: http://hdl.handle.net/10397/9880
ISSN: 0257-8972
DOI: 10.1016/S0257-8972(01)01293-2
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

14
Last Week
0
Last month
0
Citations as of Jun 25, 2017

WEB OF SCIENCETM
Citations

14
Last Week
0
Last month
0
Citations as of Mar 30, 2017

Page view(s)

27
Last Week
0
Last month
Checked on Jun 25, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.