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URN etd-0730104-131504 Statistics This thesis had been viewed 3427 times. Download 2620 times. Author Liang-Da Tsai Author's Email Address email@example.com Department Materials Engineering Year 2003 Semester 2 Degree Master Type of Document Master's Thesis Language English Page Count 73 Title The study of influences of alloy elements on Vacuum Super Carburization Keyword super carburization alloy element alloy element super carburization Abstract The martensitic stainless steel SUS-420J2, hot work tool steel SKD61 and conventional carburizing steel SCM415 were Super carburized by use of a two-chamber vacuum furnace, and acetylene was used for carburizing gas.
In the present study the evaluation of super carburization of three steels have been made on the carburized layers with respect to their metallographs, the hardness distributions, carbon/carbide distributions and redistribution of alloys in the carburized layers. In addition, the wear resistance behavior of the carburized layers were also investigated in this paper.
The Super carburization process can provide outstanding performance in the surface hardening of high-alloyed steel. Because of large amount of massive carbides accumulated in the steel surface by repeated process of carburization and precipitation, the hardness and wear-resistance of the work will be significantly improved. However, the fatigue strength of the high-alloyed steel works is reduced due to the excessive high core hardness after hardening.
Advisor Committee Fan-Shiong Chen - advisor
Files Date of Defense 2004-07-27 Date of Submission 2004-07-30