Test and temperature field of finite element simulation about the effect of scanning speed on 304 stainless layer's properties by laser cladding

2015 ◽  
Vol 19 (sup8) ◽  
pp. S8-9-S8-13 ◽  
Author(s):  
H. Ju ◽  
P. Xu ◽  
C. Lin ◽  
D. Sun
Keyword(s):  
Finite Element ◽  
Temperature Field ◽  
Finite Element Simulation ◽  
Laser Cladding ◽  
Scanning Speed ◽  
Element Simulation

Finite Element Simulation for Temperature Field of Nickels-based Alloy Based on DLMS

Applied laser ◽  
2010 ◽  
Vol 30 (4) ◽  
pp. 284-290
Author(s):  
凡进军 Fan Jinjun ◽  
赵剑峰 Zhao Jianfeng
Keyword(s):  
Finite Element ◽  
Temperature Field ◽  
Finite Element Simulation ◽  
Element Simulation

scholarly journals Finite element simulation and microstructure analysis of nickel based alloy for additive manufacturing

2018 ◽  
Vol 242 ◽  
pp. 01022
Author(s):  
Liu Heping ◽  
Sun Fenger ◽  
Yibo Fenger ◽  
Cheng Shaolei ◽  
Liu Bin
Keyword(s):  
Finite Element ◽  
Temperature Field ◽  
Temperature Gradient ◽  
Heat Source ◽  
Finite Element Simulation ◽  
Molten Pool ◽  
Laser Melting ◽  
Front End ◽  
Element Simulation ◽  
Laser Heat Source

In this paper, the finite element simulation of GH4169 high temperature alloy by selective laser melting was carried out, and the microstructure was analyzed by experiments. The results show that the shape of the temperature field cloud formed by the laser heat source is different from the shape of the theoretical model, but is in the shape of the ellipse. The temperature gradient at the front end of the molten pool is larger than that of the back end of the molten pool, and the isotherm of the front end of the molten pool is more intensive. The temperature of the substrate is less affected by the temperature gradient. The temperature gradient of the front end of the melting pool is larger than the back end of the molten pool, and the temperature field of selective laser melting is like a meteor with trailing tail. In the laser heat source, the temperature isotherm is the most dense and the temperature gradient is maximum. The relative effect of mechanical properties of δ phase is very complex. When the phase is precipitated by widmanstatten structure, it is easy to produce stress concentration as a source of cracks

Finite Element Simulation of Temperature Field in Plunge Milling Ti-6A1-4V at Cooling Condition

2011 ◽  
Vol 4 (3) ◽  
pp. 824-829
Author(s):  
Xuda Qin ◽  
Hao Jia ◽  
Xiaolai Ji ◽  
Xiaotai Sun ◽  
Qi Wang
Keyword(s):  
Finite Element ◽  
Temperature Field ◽  
Finite Element Simulation ◽  
Cooling Condition ◽  
Plunge Milling ◽  
Element Simulation

Finite Element Simulation of Temperature Field on Laser Cladding Layers Regulated by Micro-Forging

2011 ◽  
Vol 328-330 ◽  
pp. 1417-1420
Author(s):  
Ju Zhou ◽  
Chang Jun Qiu ◽  
Xi Yang Cheng
Keyword(s):  
Plastic Deformation ◽  
Finite Element ◽  
Temperature Field ◽  
Thermal Stress ◽  
Laser Cladding ◽  
Cladding Layer ◽  
Element Simulation ◽  
Preheating Temperature ◽  
Deform 2D ◽  
Cladding Layers

Micro-plastic deformation was produced on the surface of the laser cladding layer by micro-forging, thus cracks were healed in cladding layer; in order to reduce the thermal stress, preheating the substrate was needed to reduce the temperature gap between cladding layer and substrate. In this paper, temperature field by micro-forging on laser cladding Ni60 layer was simulated on software named DEFORM-2D. Compared the width of cracks, the results showed that reasonable and effective preheating temperature could ensure to reduce or eliminate cracks on laser cladding layer.

Microstructures Finite Element Simulation of Laser Cladding Layer Regulated by Micro-Forging

2011 ◽  
Vol 328-330 ◽  
pp. 1568-1571 ◽  
Author(s):  
Ju Zhou ◽  
Chang Jun Qiu ◽  
Xi Yang Cheng
Keyword(s):  
Experimental Data ◽  
Finite Element ◽  
Finite Element Simulation ◽  
Laser Cladding ◽  
Avrami Equation ◽  
Cladding Layer ◽  
Whole Process ◽  
Element Simulation ◽  
Calculation Results ◽  
Set Up

In the whole process of micro-forging regulation laser cladding layer, the microstructure structure of cladding layer would change. In order to establish the microstructure evolution of the whole process, firstly re-crystallization model was set up based on Avrami equation and experimental data, and various material constants were gained with regress; secondly calculation for the model was carried out on DEFORM-2D,then the results were compared with experimental data, which showed that calculation results of this model kept good consistency with experimental data, and proved that the model could be applied in a full size finite element simulation of the micro forging process.

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