Affiliation:
1. College of Metallurgy and Energy, North China University of Science and Technology, Tangshan, People's Republic of China
Abstract
Comparative experiments on different decarburisation processes of Fe-C alloys in Ar-CO-CO2 and Ar-H2O-H2 atmospheres were carried out. The fundamental principles of carbon distribution, migration, and conversion are elucidated during decarburisation in both atmospheres. The completely decarburised layer of 2-mm-thick strip in Ar-CO-CO2 atmosphere appeared about 20 min later than the decarburisation in Ar-H2O-H2 atmosphere. Compared with the decarburisation in the Ar-H2O-H2 atmosphere, the carbon-rich phase dissolution zone is wider and the solid solution carbon content in the centre side is lower in the Ar-CO-CO2 atmosphere. The concentration gradient of solid solution carbon on the centre side of the interface of austenite zone in Ar-CO-CO2 atmosphere is smaller than that in the Ar-H2O-H2 atmosphere.
Funder
Natural Science Foundation of Hebei Province
Science and Technology Research Projects of Higher Education Institutions in Hebei Province
Basic Science and Technology Research Project of Education Department of Hebei Province
Postgraduate Innovation Project of Hebei Province
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science