ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
High strengths and impact values are required for carburizing steels used for automotivedrive train parts. It is well known that the finer-grain microstructures are favorable for theseproperties. In this study, with a view to effective refining of grain size with controlling the alloyingelements, influence of Mn and Cr content on prior austenite grain size after carburizing andrepeated quenching was investigated on Ti-modified carburizing steels with ferrite and pearlitemicrostructure. It was found that the increase in Mn and Cr contents in steels were effective for thegrain refining. These effects were attributed to fine ferrite and pearlite microstructure caused by thelowered Ar3 point due to higher Mn content, and retarding the grain growth of austenite by the finedispersion of carbides in the carburized layer of specimen due to higher Cr content
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/18/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.561-565.2345.pdf
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