Cited 1 time in webofscience Cited 1 time in scopus

Modeling of Laser-Tempering Process for Hyper-Eutectoid Steels

Title
Modeling of Laser-Tempering Process for Hyper-Eutectoid Steels
Authors
Raghavan, S[Raghavan, Satyanarayanan]Melkote, SN[Melkote, Shreyes N.]Hong, JI[Hong, Jung-Il]
DGIST Authors
Hong, JI[Hong, Jung-Il]
Issue Date
2014-05
Citation
Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 45A(5), 2612-2625
Type
Article
Article Type
Article; Conference Paper
Keywords
Advanced ManufacturingBulk MaterialsComputational PhaseGrain RefinementHardeningHardnessKinetics-Based ModelLaser ParametersMicro-Structural AnalysisSurface HardnessSurfacesTemperature HistoryTempering
ISSN
1073-5623
Abstract
Laser surface tempering causes reduction in the surface hardness without affecting the bulk material hardness. The tempering behavior can be advantageous in advanced manufacturing processes that require controlled softening of the surface layers of through-hardened high-strength steels. This paper presents a computational phase change kinetics-based model for selecting the laser parameters that temper the surface layers of a through-hardened hyper-eutectoid steel (AISI 52100) over a known depth. First, a three-dimensional analytical thermal model is used to evaluate the temperature field produced in the material due to thermal cycles produced by laser scanning of the surface. The computed temperature histories are then fed to the phase-change model to predict the surface and subsurface hardness for the chosen laser-processing conditions. Microstructural analysis of the laser-treated AISI 52100 workpiece surface is presented for different laser-processing conditions. It is shown that good agreement is achieved between the predicted and measured surface hardness. © 2014 The Minerals, Metals & Materials Society and ASM International.
URI
http://hdl.handle.net/20.500.11750/3095
DOI
10.1007/s11661-014-2204-6
Publisher
Springer
Files:
There are no files associated with this item.
Collection:
Emerging Materials ScienceETC1. Journal Articles


qrcode mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE