Features of Obtaining Ni-Cr-Fe Alloy Powders by Plasma Atomization
- 27 July 2021
- journal article
- Published by Trans Tech Publications, Ltd. in Materials Science Forum
- Vol. 1040, 1-7
- https://doi.org/10.4028/www.scientific.net/msf.1040.1
Abstract
New requirements put forward to the modern industry to reduce harmful emissions increase the utilization rate of metal, reduce the production time of equipment, the production of components and parts from hard-to-process materials aim to introduce new technological processes. A promising technology is additive growing, which allows one to minimize the production time of unique products, to use hard-to-process alloys, for example, based on the Ni-Fe-Cr system, in their manufacture. The study was carried out by the method of mathematical planning of the experiment with subsequent processing of the results on a supercomputer. The results of the influence of the current applied to the plasma torch and the flow rate of the plasma-forming gas are presented; wire feed rates during spraying in power plants per fraction and particle size ratio in the volume of the yield of suitable. The minimum allowable yield of the product is set at 30 % with the production of fractions in the range from 40 to 140 microns. The results obtained for the Inconel 718 alloy confirmed the possibility of obtaining Ni-Cr-Fe alloy powders. The mode proposed in the work allows obtaining commodity fractions at the level of 30-35% of the mass of the sprayed feedstock. Additional tests of the mechanical properties and corrosion resistance of samples made from the resulting powder showed satisfactory results, similar to the results of tests of samples made from heat-treated alloy forgings.Keywords
This publication has 5 references indexed in Scilit:
- Regulation of powder particle sizes during plasma sprayingIOP Conference Series: Materials Science and Engineering, 2020
- Fabrication of micro-fine spherical high Nb containing TiAl alloy powder based on reaction synthesis and RF plasma spheroidizationPowder Technology, 2015
- The present and future of additive manufacturing in the aerospace sector: A review of important aspectsProceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 2015
- Preparation of Spherical Titanium Powders from Polygonal Titanium Hydride Powders by Radio Frequency Plasma TreatmentMATERIALS TRANSACTIONS, 2013
- Plasma spheroidization of iron powders in a non-transferred DC thermal plasma jetMaterials Characterization, 2008