Paper Title:
Integral Approach and Numerical Improvement to Calculate Carbon Concentration Profiles in Carburising

The carbon diffusion in steel, where the carbon diffusivity varies with the carbon content, was solved with the integral methods under the third boundary condition. The variation of carbon diffusivity in steel with the carbon content was described with two different functions, linear dependence and exponential dependence. The integral approximation for both cases was improved with the numerical computation to more accurately predict the carbon profiles. The integral solution is more accurate than the formulation based on the assumption of a constant diffusivity or those based on the assumption of a constant diffusivity and/or constant carbon content at part surface. It is also more easily used in practice than the numerical method to describe the carburising process and predict the carbon content at steel surface and carbon profiles in treated layer.

Advanced Materials Research (Volumes 264 - 265)
Edited by
M.S.J. Hashmi, S. Mridha and S. Naher
Wei Min Gao et al., 2011, Advanced Materials Research, 264-265, 1494
Online since
June 2011
US$ 28,-
Authors: Clemens Franz, Gerhard Besserdich, Volker Schulze, Hermann Müller, Detlef Löhe
Abstract:The field of heat treatment of steels offers a large variety of applications for the use of simulation tools. It always includes the...
Authors: Masahiro Okumiya, Satoshi Hagi, Kazuya Orita, Yoshiki Tsunekawa, Yoshito Umeda, Takayuki Nagai
Abstract:Acetylene and ethylene are frequently used in vacuum carburizing in Japan. In this study the natural gas which is available from the...
Authors: Ze Biao Zhang, Wan Kun Wang, Jin Hui Peng
Abstract:The leaching tests of nickel supported activated carbon under normal pressure in (NH4)2SO4 were studied. The...
Authors: Piotr Kula, Emilia WoĊ‚owiec, Robert Pietrasik, Konrad Dybowski, Leszek Klimek
Chapter 2: Materials Science and Engineering
Abstract:The article is dedicated to the experiments and tests on the phenomena of precipitation and dissolution of alloy iron carbides in vacuum...
  | Authors: Li Li Yang, Yong Quan Zhang, Yong Ge, Qing Hua Zhu, Ce Zhang
Chapter 3: Advanced Technique in Road Engineering and Material Science
Abstract:Structural health monitoring of concrete infrastructures has attracted enormous attention due to the brittle nature of concrete. In this...