Microstructure and Reciprocating Sliding Wear Resistance Evaluation on SiMo Ductile Iron Low Alloyed with Cobalt
High silicon and molybdenum (SiMo) ductile irons present a metallic matrix composed principally of ferrite with little volume fraction of pearlite and carbides. In this work, two SiMo ductile irons with similar levels of silicon, 0.3% Mo (DI-0.3Mo) and 0.6% Mo with 0.8% Co (DI-0.6Mo-0.8Co), were eva...
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MDPI AG
2025-03-01
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| author | Eduardo Colin-García Alejandro Cruz-Ramírez Marisa Moreno-Ríos Ricardo Gerardo Sánchez-Alvarado José Antonio Romero-Serrano Juan Cancio Jiménez-Lugos Armando Irvin Martínez-Pérez Edgar Ernesto Vera-Cárdenas |
| author_facet | Eduardo Colin-García Alejandro Cruz-Ramírez Marisa Moreno-Ríos Ricardo Gerardo Sánchez-Alvarado José Antonio Romero-Serrano Juan Cancio Jiménez-Lugos Armando Irvin Martínez-Pérez Edgar Ernesto Vera-Cárdenas |
| author_sort | Eduardo Colin-García |
| collection | DOAJ |
| description | High silicon and molybdenum (SiMo) ductile irons present a metallic matrix composed principally of ferrite with little volume fraction of pearlite and carbides. In this work, two SiMo ductile irons with similar levels of silicon, 0.3% Mo (DI-0.3Mo) and 0.6% Mo with 0.8% Co (DI-0.6Mo-0.8Co), were evaluated to determine the effect of molybdenum and cobalt on the microstructure, hardness, and wear performance at room temperature. The microstructural characterization of the ductile irons was performed using light microscopy and SEM-EDS. At the same time, mechanical characterization was carried out using Rockwell C hardness, and wear was evaluated using reciprocating ball-on-flat sliding wear tests. The result showed that DI-0.6Mo-0.8Co obtained the higher nodule count (247 nod/mm<sup>2</sup>), nodularity (86.69%), volume fraction of ferrite (78.15%), and molybdenum carbides (2.1%), while DI-0.3Mo presented a higher volume fraction of pearlite (12.8%) and free graphite (13.88%). The higher value of Rockwell C hardness with 21.29 HRC was obtained in DI-0.6Mo-0.8Co due to a higher amount of molybdenum carbides. The wear resistance shows that the DI-0.6Mo-0.8Co sample presented the highest wear resistance due to an adequate balance between a ferritic matrix reinforced by the molybdenum and cobalt addition and a high carbide content. |
| format | Article |
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| institution | OA Journals |
| issn | 2073-4352 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | MDPI AG |
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| series | Crystals |
| spelling | doaj-art-16d73caa348043859e4216b1e8669cda2025-08-20T02:11:01ZengMDPI AGCrystals2073-43522025-03-0115327810.3390/cryst15030278Microstructure and Reciprocating Sliding Wear Resistance Evaluation on SiMo Ductile Iron Low Alloyed with CobaltEduardo Colin-García0Alejandro Cruz-Ramírez1Marisa Moreno-Ríos2Ricardo Gerardo Sánchez-Alvarado3José Antonio Romero-Serrano4Juan Cancio Jiménez-Lugos5Armando Irvin Martínez-Pérez6Edgar Ernesto Vera-Cárdenas7Escuela Superior de Ingeniería Química e Industrias Extractivas, Instituto Politécnico Nacional, Unidad Profesional Adolfo López Mateos, Ciudad de México 07738, MexicoUnidad Profesional Interdisciplinaria de Ingeniería Campus Hidalgo, Instituto Politécnico Nacional, Carretera Pachuca-Actopan km 1-500, San Agustín Tlaxiaca 42162, MexicoDivisión de Estudios de Posgrado e Investigación, Tecnológico Nacional de México/Instituto Tecnológico de Pachuca, Pachuca 42080, MexicoEscuela Superior de Ingeniería Química e Industrias Extractivas, Instituto Politécnico Nacional, Unidad Profesional Adolfo López Mateos, Ciudad de México 07738, MexicoEscuela Superior de Ingeniería Química e Industrias Extractivas, Instituto Politécnico Nacional, Unidad Profesional Adolfo López Mateos, Ciudad de México 07738, MexicoEscuela Superior de Ingeniería Química e Industrias Extractivas, Instituto Politécnico Nacional, Unidad Profesional Adolfo López Mateos, Ciudad de México 07738, MexicoDivisión de Estudios de Posgrado e Investigación, Tecnológico Nacional de México/Instituto Tecnológico de Pachuca, Pachuca 42080, MexicoDivisión de Estudios de Posgrado e Investigación, Tecnológico Nacional de México/Instituto Tecnológico de Pachuca, Pachuca 42080, MexicoHigh silicon and molybdenum (SiMo) ductile irons present a metallic matrix composed principally of ferrite with little volume fraction of pearlite and carbides. In this work, two SiMo ductile irons with similar levels of silicon, 0.3% Mo (DI-0.3Mo) and 0.6% Mo with 0.8% Co (DI-0.6Mo-0.8Co), were evaluated to determine the effect of molybdenum and cobalt on the microstructure, hardness, and wear performance at room temperature. The microstructural characterization of the ductile irons was performed using light microscopy and SEM-EDS. At the same time, mechanical characterization was carried out using Rockwell C hardness, and wear was evaluated using reciprocating ball-on-flat sliding wear tests. The result showed that DI-0.6Mo-0.8Co obtained the higher nodule count (247 nod/mm<sup>2</sup>), nodularity (86.69%), volume fraction of ferrite (78.15%), and molybdenum carbides (2.1%), while DI-0.3Mo presented a higher volume fraction of pearlite (12.8%) and free graphite (13.88%). The higher value of Rockwell C hardness with 21.29 HRC was obtained in DI-0.6Mo-0.8Co due to a higher amount of molybdenum carbides. The wear resistance shows that the DI-0.6Mo-0.8Co sample presented the highest wear resistance due to an adequate balance between a ferritic matrix reinforced by the molybdenum and cobalt addition and a high carbide content.https://www.mdpi.com/2073-4352/15/3/278ductile ironmicrostructuresiliconmolybdenumcobaltRockwell C hardness |
| spellingShingle | Eduardo Colin-García Alejandro Cruz-Ramírez Marisa Moreno-Ríos Ricardo Gerardo Sánchez-Alvarado José Antonio Romero-Serrano Juan Cancio Jiménez-Lugos Armando Irvin Martínez-Pérez Edgar Ernesto Vera-Cárdenas Microstructure and Reciprocating Sliding Wear Resistance Evaluation on SiMo Ductile Iron Low Alloyed with Cobalt Crystals ductile iron microstructure silicon molybdenum cobalt Rockwell C hardness |
| title | Microstructure and Reciprocating Sliding Wear Resistance Evaluation on SiMo Ductile Iron Low Alloyed with Cobalt |
| title_full | Microstructure and Reciprocating Sliding Wear Resistance Evaluation on SiMo Ductile Iron Low Alloyed with Cobalt |
| title_fullStr | Microstructure and Reciprocating Sliding Wear Resistance Evaluation on SiMo Ductile Iron Low Alloyed with Cobalt |
| title_full_unstemmed | Microstructure and Reciprocating Sliding Wear Resistance Evaluation on SiMo Ductile Iron Low Alloyed with Cobalt |
| title_short | Microstructure and Reciprocating Sliding Wear Resistance Evaluation on SiMo Ductile Iron Low Alloyed with Cobalt |
| title_sort | microstructure and reciprocating sliding wear resistance evaluation on simo ductile iron low alloyed with cobalt |
| topic | ductile iron microstructure silicon molybdenum cobalt Rockwell C hardness |
| url | https://www.mdpi.com/2073-4352/15/3/278 |
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