Numerical Algorithm for a Three-dimensional Stress-induced Solid-phase-transformation Model

2004 ◽  
pp. 217-224
Author(s):  
Ferdinando Auricchio ◽  
Lorenza Petrini
Keyword(s):  
Phase Transformation ◽  
Numerical Algorithm ◽  
Solid Phase ◽  
Three Dimensional ◽  
Transformation Model ◽  
Solid Phase Transformation

scholarly journals Multi-track, Multi-layer Dendrite Growth and Solid Phase Transformation Analysis during Additive Manufacturing of H13 Tool Steel Using a Combined Hybrid Cellular Automata/Phase Field and Solid-state Phase Prediction Models

2021 ◽  
Author(s):  
Neil Bailey ◽  
Yung C. Shin
Keyword(s):  
Phase Transformation ◽  
Cellular Automata ◽  
Tool Steel ◽  
Phase Field ◽  
Solid Phase ◽  
Dendrite Growth ◽  
Transformation Model ◽  
Hybrid Cellular Automata ◽  
H13 Tool Steel ◽  
Solid Phase Transformation

Abstract Using an efficient hybrid Cellular Automata/Phase Field (CA-PF) dendrite growth modeling in combination with a solid phase transformation model, microstructure evolution and solid-phase transformation were predicted during laser direct deposition (LDD) of H13 tool steel powder across multiple tracks and layers. Temperature and surface geometry data were provided by a comprehensive physics-based laser deposition model. The computational efficiency of the CA-PF model allows for simulating domains large enough to capture dendrite growth across an entire molten pool and into neighboring LDD tracks. The microstructure of the target track is strongly affected by heat from neighboring tracks including re-melting and re-solidification, and martensite tempering. Dendrite size and growth direction across the entire fusion zone, as well as predicted hardness values, are found to be in good agreement with experimental results.

Solid-solid phase transformation of uniaxially oriented n-alkane crystals of high purity

1995 ◽  
Vol 355 (1) ◽  
pp. 95-104 ◽  
Author(s):  
Ryozo Kitamaru ◽  
Fumitaka Horii ◽  
Masaru Nakagawa ◽  
Kanichiro Takamizawa ◽  
Yoshiko Urabe ◽  
...  
Keyword(s):  
Phase Transformation ◽  
High Purity ◽  
Solid Phase ◽  
Solid Phase Transformation

Heat-Induced Solid–Solid Phase Transformation of TKX-50

2017 ◽  
Vol 121 (15) ◽  
pp. 8262-8271 ◽  
Author(s):  
Zhipeng Lu ◽  
Xianggui Xue ◽  
Liya Meng ◽  
Qun Zeng ◽  
Yu Chi ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Solid Phase ◽  
Solid Phase Transformation

scholarly journals Dynamical simulations of an electronically induced solid-solid phase transformation in tungsten

2015 ◽  
Vol 92 (13) ◽  
Author(s):  
Samuel T. Murphy ◽  
Szymon L. Daraszewicz ◽  
Yvelin Giret ◽  
Matthew Watkins ◽  
Alexander L. Shluger ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Solid Phase ◽  
Dynamical Simulations ◽  
Solid Phase Transformation

Solid-solid phase transformation via internal stress-induced virtual melting: Additional confirmations

2005 ◽  
Vol 87 (19) ◽  
pp. 191907 ◽  
Author(s):  
Valery I. Levitas ◽  
Laura B. Smilowitz ◽  
Bryan F. Henson ◽  
Blaine W. Asay
Keyword(s):  
Phase Transformation ◽  
Internal Stress ◽  
Solid Phase ◽  
Solid Phase Transformation

Optimization of Laser Hardening Processes for Industrial Parts With Complex Geometry via Predictive Modeling

2009 ◽  
Author(s):  
Neil S. Bailey ◽  
Yung C. Shin
Keyword(s):  
Phase Transformation ◽  
Thermal Model ◽  
Complex Geometry ◽  
Solid Phase ◽  
Three Dimensional ◽  
Laser Hardening ◽  
Temperature History ◽  
Temperature Phase ◽  
Laser Systems ◽  
History Of

A predictive laser hardening model for industrial parts with complex geometric features has been developed and used for optimization of hardening processes. A transient three-dimensional thermal model is combined with a three-dimensional kinetic model for steel phase transformation and solved in order to predict the temperature history and solid phase history of the workpiece while considering latent heat of phase transformation. Further, back-tempering is also added to the model to determine the phase transformation during multitrack laser hardening. The integrated model is designed to accurately predict temperature, phase distributions and hardness inside complex geometric domains. The laser hardening parameters for two industrial workpieces are optimized for two different industrial laser systems using this model. Experimental results confirm the validity of predicted results.

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