|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Large-scale Metallic Components
||J-20: Modelling and Analysis of Single-pass Laser Cladded High Speed Steel Considering Phase Transformation Effects
||Ke Ren, Yiming Rong, Zhichao (Charlie) Li, Gang Wang
|On-Site Speaker (Planned)
Coaxial powder feed laser cladding has been widely used in the surface modification and strengthening of large-scale metallic components, for it has some unique advantages, such as fast response speed and flexible deposition direction. As the deposition material, ASTM T15 high speed steel can greatly enhance the wear-resistance because of its high hardness (≥800HV) and excellent mechanical properties (σ0.15≥3000MPa). However, the thermophysical properties differences between deposition layers and substrate will result in large inner stress and hardness gradient. For investigating the effect of high laser energy input on the solid phase transformation, the phase transition kinetics model of T15 is established by using DANTE software. Finally, a three-dimensional numerical model for single-pass laser cladded high speed steel is developed to predict solid phase transformation, hardness, and inner stress. The model calculates the variations of stresses and hardness into the depth, which provide a reasonable agreement with experimental results.
||Additive Manufacturing, Phase Transformations, Surface Modification and Coatings