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Publications (9)
In this paper, a predictive multi-scale model based on a cellular automaton (CA)-finite element (FE) method has been developed to simulate thermal history and microstructure evolution during metal solidification for the Direct Metal Deposition (DMD) process. The macroscopic FE calculation that is validated by thermocouple experiment is developed to...
Purpose
This paper aims to manufacture Ti6Al4V/TiC functionally graded material (FGM) by direct laser deposition (DLD) using Ti6Al4V and TiC powder. The objective is to investigate the effect of process parameters and TiC composition on microstructure, Vickers hardness and mechanical properties.
Design/methodology/approach
Powder blends with thr...
It is becoming an urgent need to synthesize novel alloy possessing both corrosion resistance and sufficient plasticity to meet various functionality requirements in severe corrosion working environment. This study introduced a new Fe-Cr-Ni-based alloy with gradient composition which was fabricated by additive manufacturing with pre-mixed elemental...
To explore novel alloy possessing both corrosion resistance and sufficient plasticity to meet various functionality requirements in severe corrosion working environment, in this study, a new Fe-Cr-Ni based alloy with gradually changing composition was synthesized by directed energy deposition with pre-mixed elemental powder. A thin wall sample was...
Functionally Graded Material (FGM) is often fabricated by directed energy deposition with pre-mixed multiple powders (PMM-powder). Since the supplied PMM-powder directly affects FGM’s composition, investigation on PMM-powder’s property is greatly needed. This paper employed experimental method to observe an important problem: PMM-powder separation...
Laser Metal Deposition (LMD) is an effective process to fabricate Functionally Gradient Material (FGM) from pre-mixed powders. Since the supplied multi-powder directly affects the deposited FGM’s composition,
nvestigation on Pre-Mixed Multi-Powder (PMMP) flow during LMD is greatly needed. This paper presents a comprehensive numerical PMMP flow mod...
In this paper, a predictive model based on a cellular automaton (CA)-finite element (FE) method has been developed to simulate thermal history and microstructure evolution during metal solidification for a laser-based additive manufacturing process. The macroscopic FE calculation was designed to update the temperature field and simulate a high cool...
A predictive model, based on a Cellular Automaton (CA) - Finite Element (FE) method, has been developed to simulate microstructure evolution during metal solidification for a laser based additive manufacturing process. The macroscopic FE calculation was designed to update the temperature field and simulate a high cooling rate. In the microscopic CA...
