ISSN:
1573-4803
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract There are three major constituents, i.e. tempered martensite, retained austenite and primary carbides of Cr7C3 and Cr23C6, in the microstructure of a D-2 tool steel. An abrasive wear test with SiC sand paper under two different loads was conducted on specimens having various contents of the above constituents in order to investigate their role in the wear characteristics. It is found that although the wear resistivity seems to vary with changing retained austenite content or hardness, the primary carbides, however, are more likely to be the dominating factor causing the weight loss, especially for wear under a relatively heavy load, From microstructural examination of the worn specimens, cracks and spallation initiated from the primary carbides were observed. Both of the primary carbides and retained austenite were massively removed from the worn surface layer. On the other hand, the role of retained austenite was significant only for the wear test under a light load.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01115699
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