Journal Published Online: 11 September 2014
Volume 3, Issue 4

Large Forgings: Microstructural Evolution and Residual Stresses Due to Quenching Treatments—A Combined Numerical and Experimental Approach

CODEN: MPCACD

Abstract

Based on numerical and experimental data, an FEM model was implemented to simulate quench treatments on large forging components. After experimental validation of convection coefficient laws between water and component surface, time–temperature curves were determined for a large forged piece for different corss section of the component itself. Then superimposing these curves to the continuous cooling transformation diagram for the material, it was possible to identify the microstructural constituents of the steel after quenching. The component residual stress field was obtained by implementing the volumetric expansion law due to the phase transition during cooling. The ability to simulate the heat treatment of heavy size parts must be considered very useful due to quickly managing of all variables that govern the problem (initial and final temperatures, holding times, quenching mode, size, and geometry of components) and the possibility to predict final characteristics of the workpiece.

Author Information

Boniardi, Marco
Politecnico di Milano, Dipartimento di Meccanica, Milano, IT
Guagliano, Mario
Politecnico di Milano, Dipartimento di Meccanica, Milano, IT
Casaroli, Andrea
Politecnico di Milano, Dipartimento di Meccanica, Milano, IT
Andreotti, Riccardo
Politecnico di Milano, Dipartimento di Meccanica, Milano, IT
Ballerini, Filippo
Politecnico di Milano, Dipartimento di Meccanica, Milano, IT
Pages: 19
Price: $25.00
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Details
Stock #: MPC20130089
ISSN: 2165-3992
DOI: 10.1520/MPC20130089