scholarly journals Microstructural and mechanical properties evolutions of plasma transferred arc deposited Norem02 hardfacing alloy at high temperature

2011 ◽  
Vol 528 (15) ◽  
pp. 5096-5105 ◽  
Author(s):  
Gauthier Beaurin ◽  
Jean-Philippe Mathieu ◽  
Elise Gauthier ◽  
Daniel Nelias ◽  
Michel Coret ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Hardfacing Alloy ◽  
Plasma Transferred Arc ◽  
Transferred Arc

Microstructural aspects of plasma transferred arc surfaced Ni-based hardfacing alloy

2007 ◽  
Vol 456 (1-2) ◽  
pp. 11-19 ◽  
Author(s):  
K. Gurumoorthy ◽  
M. Kamaraj ◽  
K. Prasad Rao ◽  
A. Sambasiva Rao ◽  
S. Venugopal
Keyword(s):  
Hardfacing Alloy ◽  
Plasma Transferred Arc ◽  
Transferred Arc

scholarly journals Effect of B Content on Microstructure and Wear Resistance of Fe-3Ti-4C Hardfacing Alloys Produced by Plasma-Transferred Arc Welding

Coatings ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 265 ◽  
Author(s):  
Lin Zong ◽  
Ning Guo ◽  
Rongguang Li ◽  
Hongbing Yu
Keyword(s):  
Wear Resistance ◽  
Volume Fraction ◽  
Lath Martensite ◽  
Testing Machine ◽  
High Hardness ◽  
Wear Testing ◽  
Low Carbon ◽  
Hardfacing Alloy ◽  
Plasma Transferred Arc ◽  
Transferred Arc

The Fe-3Ti-xB-4C (x = 1.71, 3.42, 5.10, 6.85 wt. %) hardfacing alloys are deposited on the surface of a low-carbon steel by plasma transferred arc (PTA) weld-surfacing process. Microstructure, hardness and wear resistance have been investigated using scanning electron microscopy (SEM), X-ray diffraction (XRD), Rockwell hardness tester and abrasive wear testing machine, respectively. The results show that the microstructure in all alloys is composed of austenite, martensite, Fe23(C,B)6, Ti(C,B) and Fe2B. The volume fraction of eutectic borides and Ti(C,B) carbides increases with increasing B content. Many brittle bulk Fe2B phase arises when the boron content increases to 6.85%, which causes the formation of microcracks in the hardfacing layer. The microhardness of the hardfacing alloys is significantly improved with the B addition, however, the wear resistance of hardfacing alloys increases firstly and then decreases with increasing of B content. The hardfacing alloy with the 5.10% B content has the best wear resistance, which is attributed to high volume fraction of eutectic borides and fine Ti(C,B) particles distributed in the austenite and lath martensite matrix with high hardness and toughness. The formation of brittle bulk Fe2B particles in the hardfacing alloy with the 6.85% B leads to the fracture and spalling of hard phases during wear, thus, reducing the wear resistance.

Effect of Welding Parameters on Mechanical Properties of Plasma Transferred Arc Welded SS 202 Plates

2016 ◽  
Vol 852 ◽  
pp. 324-330 ◽  
Author(s):  
Manickam Ravichandran ◽  
Navaneethan Sabarirajan ◽  
Thanikodi Sathish ◽  
Sekar Saravanan
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Impact Strength ◽  
Feed Rate ◽  
Arc Welding ◽  
Low Voltage ◽  
Welding Parameters ◽  
Powder Feed Rate ◽  
Plasma Transferred Arc ◽  
Transferred Arc

Plasma arc welding is an arc welding process wherein coalescence is produced by the heat obtained from a constricted arc setup between a tungsten electrode and the workpiece material. In the present work, the 6 mm thick stainless steel 202 plates are welded using plasma transferred arc welding. The welding parameters such as powder feed rate, welding voltage and welding current were carefully selected. The effect of these parameters on mechanical properties such as tensile strength, impact strength and hardness of the joints were studied. As a result, the increase in tensile strength and impact strength was obtained for the high current, low voltage and powder feed rate. But the highest hardness was attained for the joints made at low current, low feed rate and low voltage.

scholarly journals Influence of Plasma Transferred Arc Process Parameters on Structure and Mechanical Properties of Wear Resistive NiCrBSi-WC/Co Coatings

1970 ◽  
Vol 17 (2) ◽  
pp. 140-144 ◽  
Author(s):  
Eitvydas GRUZDYS ◽  
Šarūnas MEŠKINIS
Keyword(s):  
Mechanical Properties ◽  
Abrasive Wear ◽  
Process Parameters ◽  
Gas Flow ◽  
Elevated Temperatures ◽  
Arc Discharge ◽  
Flame Spray ◽  
Plasma Parameters ◽  
Plasma Transferred Arc ◽  
Transferred Arc

Self-fluxing NiCrBSi and related coatings received considerable interest due to their good wear as well as corrosion resistance at moderate and elevated temperatures. Hard tungsten carbide (WC) particles can be included in NiCrBSi for further increase of the coating hardness and abrasive wear resistance. Flame spray technique is widely used for fabrication of NiCrBSi films. However, in such a case, subsequent remelting of the deposited coatings by flame, arc discharge or high power laser beam is necessary. In present study NiCrBSi-WC/Co coatings were formed using plasma transferred arc process. By adjusting plasma parameters, such as current, plasma gas flow, shielding gas flow, a number of coatings were formed on steel substrates. Structure of the coatings was investigated using X-ray diffractometry. Microstructure of cross-sectioned coatings was examined using scanning electron microscopy. Hardness of the coating was evaluated by means of the Vickers hardness tests. Wear tests were also performed on specimens to determine resistance to abrasive wear. Acquired results allowed estimating the influence of the deposition process parameters on structure and mechanical properties of the coatings.http://dx.doi.org/10.5755/j01.ms.17.2.482

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