Modelling of induction hardening in low alloy steels

Research output: Contribution to journalArticle

Abstract

Induction hardening is a useful method for improving resistance to surface indentation, fatigue and wear that is favoured in comparison with through hardening, which may lack necessary toughness. The process itself involves fast heating by induction with subsequent quenching, creating a martensitic layer at the surface of the workpiece. In the present work, we demonstrate how to simulate the process of induction hardening using a commercial finite element software package with focuses on validation of the electromagnetic and thermal parts, together with evolution of the microstructure. Experiments have been carried out using fifteen workpieces that have been heated using three different heating rates and five different peak temperatures resulting in different microstructures. It is found that the microstructure and hardening depth is affected by the heating rate and peak temperature. The agreement between the experimental and simulated results is good. Also, it is demonstrated that the critical equilibrium temperatures for phase transformation is important for good agreement between the simulated and experimental hardening depth. The developed simulation technique predicts the hardness and microstructure sufficiently well for design and the development of induction hardening processes.

Details

Authors
  • M. Fisk
  • L. E. Lindgren
  • W. Datchary
  • V. Deshmukh
Organisations
External organisations
  • Malmö University
  • Luleå University of Technology
  • AB SKF
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Manufacturing, Surface and Joining Technology

Keywords

  • 50CrMo4, AISI 4150, Austenite, Ferromagnetism, Induction heating, Martensite
Original languageEnglish
Pages (from-to)61-75
Number of pages15
JournalFinite Elements in Analysis and Design
Volume144
Publication statusPublished - 2018 May 1
Publication categoryResearch
Peer-reviewedYes