Theoretical and Practical Determination of a Binary Mixture of AISI 316 Steel Powders to Increase Corrosion Resistance in Powder Metallurgical Parts
Powder metallurgical steels have lower corrosion resistance compared to wrought steels. Their behavior is simultaneously affected by interconnected porosity, pore morphology, interaction with sintering atmospheres, and metallurgical phenomena such as steel 'sensitization'. This work presen...
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Universidad Pedagógica y Tecnológica de Colombia
2022
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| Online Access: | https://revistas.uptc.edu.co/index.php/ingenieria/article/view/14417 |
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| author | Cañas-Mendoza, Luz-Adriana Pineda-Triana, Yaneth Vera-López, Enrique |
| author_facet | Cañas-Mendoza, Luz-Adriana Pineda-Triana, Yaneth Vera-López, Enrique |
| author_sort | Cañas-Mendoza, Luz-Adriana |
| collection | OJS |
| description | Powder metallurgical steels have lower corrosion resistance compared to wrought steels. Their behavior is simultaneously affected by interconnected porosity, pore morphology, interaction with sintering atmospheres, and metallurgical phenomena such as steel 'sensitization'. This work presents the theoretical methodology to calculate the optimum composition of the mixture and the conditions for a maximum packing of two sizes spheres (assuming a spherical shape factor) according to the development published by Brouwers for a system of binary mixtures. For the theoretical determination of the mixture, the results of density and porosity of a 316 powder metallurgical stainless steel made from prealloyed powders of two average granulometries (45μm and 150μm) are presented. The powders were combined in different proportions to define the appropriate quantities that allow the manufacture of steel with a low corrosion rate. The obtained results confirm that the theoretical calculation is a reliable alternative to formulate powder metallurgical alloys since good particle packing is achieved, which has a favorable effect on the characteristics of the finished product. |
| format | Online |
| id | oai:oai.revistas.uptc.edu.co:article-14417 |
| institution | Revista Facultad de Ingeniería |
| language | eng |
| publishDate | 2022 |
| publisher | Universidad Pedagógica y Tecnológica de Colombia |
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| spelling | oai:oai.revistas.uptc.edu.co:article-144172022-11-18T19:23:30Z Theoretical and Practical Determination of a Binary Mixture of AISI 316 Steel Powders to Increase Corrosion Resistance in Powder Metallurgical Parts Determinación teórica y práctica de una mezcla binaria de polvos de acero AISI 316 para aumentar la resistencia a la corrosión en piezas pulvimetalúrgicas Cañas-Mendoza, Luz-Adriana Pineda-Triana, Yaneth Vera-López, Enrique Powder metallurgy sintered porosity sintered density austenitic stainless steels corrosion rate Pulvimetalurgia porosidad de sinterizado densidad de sinterizado aceros inoxidables austeníticos velocidad de corrosión Powder metallurgical steels have lower corrosion resistance compared to wrought steels. Their behavior is simultaneously affected by interconnected porosity, pore morphology, interaction with sintering atmospheres, and metallurgical phenomena such as steel 'sensitization'. This work presents the theoretical methodology to calculate the optimum composition of the mixture and the conditions for a maximum packing of two sizes spheres (assuming a spherical shape factor) according to the development published by Brouwers for a system of binary mixtures. For the theoretical determination of the mixture, the results of density and porosity of a 316 powder metallurgical stainless steel made from prealloyed powders of two average granulometries (45μm and 150μm) are presented. The powders were combined in different proportions to define the appropriate quantities that allow the manufacture of steel with a low corrosion rate. The obtained results confirm that the theoretical calculation is a reliable alternative to formulate powder metallurgical alloys since good particle packing is achieved, which has a favorable effect on the characteristics of the finished product. Los aceros pulvimetalúrgicos tienen una menor resistencia a la corrosión en comparación con los aceros forjados. Su comportamiento se ve afectado simultáneamente por la porosidad interconectada, la morfología de los poros, la interacción con las atmósferas de sinterización y fenómenos metalúrgicos como la "sensitización" del acero. Este trabajo presenta la metodología teórica para calcular la composición óptima de una mezcla y las condiciones requeridas para obtener un empaquetamiento máximo de esferas de dos tamaños promedio de partículas (asumiendo un factor de forma esférico) según la investigación publicada por Brouwers para un sistema de mezclas binarias. Para la determinación teórica de la mezcla se presentan los resultados de densidad y porosidad de un acero inoxidable pulvimetalúrgico 316 elaborado a partir de polvos prealeados de dos granulometrías promedio (45μm y 150μm). Los polvos se combinaron en diferentes proporciones, con el fin de definir las cantidades adecuadas que permitan fabricar un acero con bajos valores de su velocidad de corrosión. Los resultados obtenidos confirman que el cálculo teórico es una alternativa confiable para formular aleaciones pulvimetalúrgicas, ya que se logra un alto empaquetamiento de partículas, lo cual incide favorablemente en las características del producto terminado. Universidad Pedagógica y Tecnológica de Colombia 2022-09-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/xml https://revistas.uptc.edu.co/index.php/ingenieria/article/view/14417 10.19053/01211129.v31.n61.2022.14417 Revista Facultad de Ingeniería; Vol. 31 No. 61 (2022): July-September 2022 (Continuous Publication); e14417 Revista Facultad de Ingeniería; Vol. 31 Núm. 61 (2022): Julio-Septiembre 2022 (Publicación Continua); e14417 2357-5328 0121-1129 eng https://revistas.uptc.edu.co/index.php/ingenieria/article/view/14417/12122 https://revistas.uptc.edu.co/index.php/ingenieria/article/view/14417/12316 Copyright (c) 2022 Luz-Adriana Cañas-Mendoza, Yaneth Pineda-Triana, Enrique Vera-López http://creativecommons.org/licenses/by/4.0 |
| spellingShingle | Powder metallurgy sintered porosity sintered density austenitic stainless steels corrosion rate Pulvimetalurgia porosidad de sinterizado densidad de sinterizado aceros inoxidables austeníticos velocidad de corrosión Cañas-Mendoza, Luz-Adriana Pineda-Triana, Yaneth Vera-López, Enrique Theoretical and Practical Determination of a Binary Mixture of AISI 316 Steel Powders to Increase Corrosion Resistance in Powder Metallurgical Parts |
| title | Theoretical and Practical Determination of a Binary Mixture of AISI 316 Steel Powders to Increase Corrosion Resistance in Powder Metallurgical Parts |
| title_alt | Determinación teórica y práctica de una mezcla binaria de polvos de acero AISI 316 para aumentar la resistencia a la corrosión en piezas pulvimetalúrgicas |
| title_full | Theoretical and Practical Determination of a Binary Mixture of AISI 316 Steel Powders to Increase Corrosion Resistance in Powder Metallurgical Parts |
| title_fullStr | Theoretical and Practical Determination of a Binary Mixture of AISI 316 Steel Powders to Increase Corrosion Resistance in Powder Metallurgical Parts |
| title_full_unstemmed | Theoretical and Practical Determination of a Binary Mixture of AISI 316 Steel Powders to Increase Corrosion Resistance in Powder Metallurgical Parts |
| title_short | Theoretical and Practical Determination of a Binary Mixture of AISI 316 Steel Powders to Increase Corrosion Resistance in Powder Metallurgical Parts |
| title_sort | theoretical and practical determination of a binary mixture of aisi 316 steel powders to increase corrosion resistance in powder metallurgical parts |
| topic | Powder metallurgy sintered porosity sintered density austenitic stainless steels corrosion rate Pulvimetalurgia porosidad de sinterizado densidad de sinterizado aceros inoxidables austeníticos velocidad de corrosión |
| topic_facet | Powder metallurgy sintered porosity sintered density austenitic stainless steels corrosion rate Pulvimetalurgia porosidad de sinterizado densidad de sinterizado aceros inoxidables austeníticos velocidad de corrosión |
| url | https://revistas.uptc.edu.co/index.php/ingenieria/article/view/14417 |
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