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Temperature Modeling of AISI 1045 Steel during Surface Hardening Processes
Tsung-Pin Hung1, Hao-En Shi2, Jao-Hwa Kuang3
1Department of Mechanical Engineering, Cheng Shiu University, Kaohsiung 840, Taiwan. tphung@gcloud.csu.edu.tw.
Materials (Basel, Switzerland)
|September 28, 2018
Summary
This study used a finite element model to simulate laser surface hardening of steel. Laser power and scanning speed were found to be key parameters influencing material hardening and tempering effects.
Area of Science:
- Materials Science
- Mechanical Engineering
- Computational Modeling
Background:
- Laser surface hardening is a critical heat treatment process for improving steel properties.
- Understanding the influence of process parameters is essential for optimizing surface hardening outcomes.
Purpose of the Study:
- To simulate the effects of laser scanning parameters on the surface hardening of AISI 1045 and AISI 4140 steels.
- To characterize quenching and tempering effects during single-track laser surface heat treatment.
Main Methods:
- A coupled thermo-mechanical finite element model was developed.
- Temperature-dependent material properties were incorporated into the model.
- Model accuracy was validated through experimental verification.
Main Results:
- Laser power and scanning speed significantly impact surface temperature distribution, hardening width, and depth.
- The model accurately predicts temperature profiles and hardening characteristics.
- Key parameters influencing material hardening were identified.
Conclusions:
- The finite element model effectively simulates laser surface heat treatment and tempering effects in steel.
- Optimizing laser power and scanning speed is crucial for achieving desired surface hardening.
- The model provides a valuable tool for predicting and controlling laser hardening processes.
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