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Mathematical modelling of grain size and hardness of a nonferrous metal in an industrial annealing furnace

Title data

Navawongse, Voravit ; Kirschen, Marcus ; Bölling, Ralf ; Pfeifer, Herbert:
Mathematical modelling of grain size and hardness of a nonferrous metal in an industrial annealing furnace.
In: Nowak, Andrzej J. , European Committee for the Advancement of Thermal Sciences and Heat Transfer (ed.): Numerical heat transfer 2005 : Eurotherm Seminar 82. - Gliwice , 2005 . - p. 12
ISBN 83-922381-2-5

Abstract in another language

According to the state-variable annealing models (Sellars [1]) for the annealing of hot and cold worked C-Mn steel, simplified mathematical models for non-isothermal heating of brass were derived to calculate the grain size and mechanical properties, i.e. hardness, after a short annealing time in an industry furnace, e.g. strip floatation furnace. In contrary to Neidel’s models [2] using hardness vs. reference-temperature curve for calculation of non-isothermal heating, these models calculate the results directly by using finite difference scheme. Based on isothermal annealing at various times and temperatures, recrystallization and grain growth kinetics of 70:30 cartridge brass at two degrees of cold work were determined. The determination of parameters bases on mathematical fit to the isothermal annealing data. These parameters are then used in the mathematical models for non-isothermal heating. The results show that calculated data correspond well with experimental data.

Further data

Item Type: Article in a book
Refereed: Yes
Institutions of the University: Faculties > Faculty of Engineering Science
Research Institutions > Affiliated Institutes > Fraunhofer Center for High Temperature Materials and Design (HTL)
Result of work at the UBT: No
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 09 Jul 2019 09:11
Last Modified: 09 Jul 2019 09:11
URI: https://eref.uni-bayreuth.de/id/eprint/49888