Microstructural Evolution and Mechanical Properties of Inconel 625 Alloy during Pulsed Plasma Arc Deposition Process

2013 ◽  
Vol 29 (5) ◽  
pp. 480-488 ◽  
Author(s):  
Fujia Xu ◽  
Yaohui Lv ◽  
Yuxin Liu ◽  
Fengyuan Shu ◽  
Peng He ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Microstructural Evolution ◽  
Deposition Process ◽  
Inconel 625 ◽  
Pulsed Plasma ◽  
Plasma Arc ◽  
Inconel 625 Alloy ◽  
Arc Deposition

Microstructural evolution and mechanical properties of Ti-6Al-4V wall deposited by pulsed plasma arc additive manufacturing

2016 ◽  
Vol 102 ◽  
pp. 30-40 ◽  
Author(s):  
J.J. Lin ◽  
Y.H. Lv ◽  
Y.X. Liu ◽  
B.S. Xu ◽  
Z. Sun ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Additive Manufacturing ◽  
Microstructural Evolution ◽  
Pulsed Plasma ◽  
Plasma Arc

Experimental Study on the Relationship of Discharge Parameters with Crack Arrest Effects in Inconel 625 Alloy by Electropulsing Treatment

2017 ◽  
Vol 909 ◽  
pp. 73-79
Author(s):  
Jing Yu ◽  
Yan Chuan Liu
Keyword(s):  
Mechanical Properties ◽  
Energy Input ◽  
Electric Energy ◽  
Crack Tip ◽  
Crack Arrest ◽  
Inconel 625 ◽  
Inconel 625 Alloy ◽  
Discharge Parameters ◽  
Electropulsing Treatment ◽  
The Relationship

The detour effect and Joule heating of electropulsing is employed on crack arrest. With respect to Inconel 625 alloy, the relationship between discharge parameters and the area of fusion zone, microstructure around the crack tip and mechanical properties are studied. The experimental results indicate that the area of molten hole is directly proportional to the electric energy input. The microstructure ahead of the crack tip is refined and uniform with the increase of electric energy input. The optimum discharge parameter range, which contributes to the improvement of comprehensive mechanical properties, can be obtained.

GTAW Welded Inconel 625 Alloy Fuel Cladding for the Canadian SCWR: Microstructure and Mechanical Property Characterization

2020 ◽  
Author(s):  
German Cota-Sanchez ◽  
Lin Xiao
Keyword(s):  
Mechanical Properties ◽  
Grain Growth ◽  
Dendritic Structure ◽  
Base Material ◽  
Mechanical Tests ◽  
Nuclear Industry ◽  
Reactor Fuel ◽  
Inconel 625 ◽  
Fuel Cladding ◽  
Inconel 625 Alloy

Abstract Inconel 625 is considered one of the candidate materials for reactor fuel cladding in the Canadian supercritical water reactor (SCWR) design. Gas tungsten arc welding (GTAW) is being evaluated as a joining technique for SCWR fuel cladding since this method is widely used to join components in the power and nuclear industry. During the GTAW process, the welding thermal cycle produces different types of microstructures in both the heat-affected zone (HAZ) and fusion zone (FZ) that affect the material's mechanical properties. A series of welding experiments at various weld conditions were performed using an automatic GTAW orbital process on Inconel 625 alloy tubing. Simple analytical heat conduction and grain growth models were developed to predict weld temperature profiles and metallurgical transformations. Weld characterization included mechanical tests, optical microscopy, scanning electron microscopy - energy dispersive spectroscopy (SEM-EDS) elemental analysis, and microhardness measurements. Weld microstructural characterization revealed that a characteristic dendritic structure was formed in the FZ, while the HAZ exhibited larger equiaxed grains than those found in the base material. SEM-EDS analysis showed no distinct alloying element segregation in both the HAZ and FZ. Welds produced with heat inputs of about 3.00 kJ/cm3 presented similar mechanical properties as those observed in the base material. In these welds, grain growth was homogenously minimized in the FZ. It is concluded that the effective welding heat input control can optimize the weld microstructure and the weld mechanical properties in Inconel 625 tubing used as Canadian SCWR reactor fuel cladding.

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