TY - JOUR
T1 - Laser surface modification of ductile iron
T2 - Part 2 Wear mechanism
AU - Ju, C. P.
AU - Chen, C. H.
AU - Rigsbee, J. M.
N1 - Funding Information:
The authors gratefully acknowledge the financial support of the Department of Energy Division of Materials Science through the University of Illinois Materials Research Laboratory under contract DOE-AC02-76EROl198. This research was also partially supported by the University of Illinois Materials Processing Consortium. The authors also acknowledge use of the facilities at the Center for Microanalysis of Materials in the Materials Research Laboratory, and the help of Mr J. Culton and Mr T. Casale in the Materials Engineering Research Laboratory laser facilities. The cast iron was supplied by Caterpillar Inc., Peoria, IL, USA.
PY - 1988/2
Y1 - 1988/2
N2 - A 10 kW CO2 continuous wave laser has been used to modify and refine the near surface microstructure of a ductile iron. The wear properties (evaluated by erosion, abrasion, and scratch tests) of the laser processed and unprocessed surfaces were studied. The wear resistance of laser processed samples is significantly enhanced by their refined austenitic microstructures and improved hardness in the melted and resolidified layer. The subsurface plastic deformation processes accompanying these wear tests are discussed. Cross-sectional scanning and transmission electron microscopy have been used to study the mechanism of wear particle generation. Subsurface microcrack generation and martensite formation from the mechanically metastable austenite matrix have been observed.
AB - A 10 kW CO2 continuous wave laser has been used to modify and refine the near surface microstructure of a ductile iron. The wear properties (evaluated by erosion, abrasion, and scratch tests) of the laser processed and unprocessed surfaces were studied. The wear resistance of laser processed samples is significantly enhanced by their refined austenitic microstructures and improved hardness in the melted and resolidified layer. The subsurface plastic deformation processes accompanying these wear tests are discussed. Cross-sectional scanning and transmission electron microscopy have been used to study the mechanism of wear particle generation. Subsurface microcrack generation and martensite formation from the mechanically metastable austenite matrix have been observed.
UR - http://www.scopus.com/inward/record.url?scp=0023963271&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0023963271&partnerID=8YFLogxK
U2 - 10.1179/mst.1988.4.2.167
DO - 10.1179/mst.1988.4.2.167
M3 - Article
AN - SCOPUS:0023963271
SN - 0267-0836
VL - 4
SP - 167
EP - 172
JO - Materials Science and Technology (United Kingdom)
JF - Materials Science and Technology (United Kingdom)
IS - 2
ER -