A 1.2-kW, continuous wave, CO2-gas laser was used to transformation harden or melt the surface of gray and ductile cast irons. Effects of surface-hardened layers on solid particle erosion showed that the erosion rate decreased with an increase in surface hardness and case depth. The order of matrix microstructures that increased the erosion rate were ledeburite, tempered martensite, and pearlite. These results were opposite to those observed in bulk-hardened alloys. Erosion mechanisms of brittle, gray iron included micromachining in the untreated condition and grain boundary cracking in the laser-treated condition. In contrast, erosion modes of ductile iron were plastic flow followed by cracking in the untreated condition and platelet formation and fatigue in the laser-treated conditions. The beneficial effects of surface hardening on erosion were examined and discussed.
Skip Nav Destination
Article navigation
July 1988
Research Papers
Wear Behavior of Laser Surface-Hardened Gray and Ductile Cast Irons. Part 2—Erosive Wear
P. A. Molian,
P. A. Molian
Department of Mechanical Engineering, Engineering Research Institute, Iowa State University, Ames, Iowa 50011
Search for other works by this author on:
Mark Baldwin
Mark Baldwin
Iowa Laser Technology, Inc., Cedar Falls, Iowa
Search for other works by this author on:
P. A. Molian
Department of Mechanical Engineering, Engineering Research Institute, Iowa State University, Ames, Iowa 50011
Mark Baldwin
Iowa Laser Technology, Inc., Cedar Falls, Iowa
J. Tribol. Jul 1988, 110(3): 462-466 (5 pages)
Published Online: July 1, 1988
Article history
Received:
January 11, 1988
Online:
October 29, 2009
Connected Content
Citation
Molian, P. A., and Baldwin, M. (July 1, 1988). "Wear Behavior of Laser Surface-Hardened Gray and Ductile Cast Irons. Part 2—Erosive Wear." ASME. J. Tribol. July 1988; 110(3): 462–466. https://doi.org/10.1115/1.3261651
Download citation file:
Get Email Alerts
Cited By
Related Articles
Effects of CO 2 Laser Surface Hardening in the Unlubricated Wear of Ductile Cast Iron Against Alumina
J. Tribol (October,1996)
Fatigue Characteristics of Laser Surface-Hardened Cast Irons
J. Eng. Mater. Technol (July,1987)
Wear Behavior of Laser Surface-Hardened Gray and Ductile Cast Irons: Part 1—Sliding Wear
J. Tribol (July,1986)
Laser Heat Treatment of Cast Irons—Optimization of Process Variables: Part I
J. Eng. Mater. Technol (July,1985)
Related Proceedings Papers
Related Chapters
Surface Analysis and Tools
Tribology of Mechanical Systems: A Guide to Present and Future Technologies
Understanding the Problem
Design and Application of the Worm Gear
Introduction
A Practical Guide to Avoiding Steam Purity Problems in the Industrial Plant (CRTD-35)