Powder Metallurgical Processing and Characterization of Molybdenum Addition to Tungsten Heavy Alloys by Spark Plasma Sintering
The effect of adding molybdenum to the heavy tungsten alloy of W-Ni-Fe on its material characteristics was examined in the current study. The elemental powders of tungsten, iron, nickel, and molybdenum, with a composition analogous to W-3Fe-7Ni-xMo (x = 0, 22.5, 45, 67.5 wt.%), were fabricated using...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-10-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/14/19/5756 |
| _version_ | 1797516098106556416 |
|---|---|
| author | A. Raja Annamalai A. Muthuchamy Muthe Srikanth Senthilnathan Natarajan Shashank Acharya Anup Khisti Chun-Ping Jen |
| author_facet | A. Raja Annamalai A. Muthuchamy Muthe Srikanth Senthilnathan Natarajan Shashank Acharya Anup Khisti Chun-Ping Jen |
| author_sort | A. Raja Annamalai |
| collection | DOAJ |
| description | The effect of adding molybdenum to the heavy tungsten alloy of W-Ni-Fe on its material characteristics was examined in the current study. The elemental powders of tungsten, iron, nickel, and molybdenum, with a composition analogous to W-3Fe-7Ni-xMo (x = 0, 22.5, 45, 67.5 wt.%), were fabricated using the spark plasma sintering (SPS) technique at a sintering temperature of 1400 °C and under pressure of 50 MPa. The sintered samples were subjected to microstructural characterization and tested for mechanical strength. The smallest grain size of 9.99 microns was observed for the 45W-45Mo alloy. This alloy also gave the highest tensile and yield strengths of 1140 MPa and 763 MPa, respectively. The hardness increased with the increased addition of molybdenum. The high level of hardness was observed for 67.5Mo with a 10.8% increase in the base alloy’s hardness. The investigation resulted in the alloy of 45W-7Ni-3Fe-45Mo, observed to provide optimum mechanical properties among all the analyzed samples. |
| first_indexed | 2024-03-10T06:56:31Z |
| format | Article |
| id | doaj.art-f7737e4588724efebd5e69ca9c45d07b |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T06:56:31Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-f7737e4588724efebd5e69ca9c45d07b2023-11-22T16:26:51ZengMDPI AGMaterials1996-19442021-10-011419575610.3390/ma14195756Powder Metallurgical Processing and Characterization of Molybdenum Addition to Tungsten Heavy Alloys by Spark Plasma SinteringA. Raja Annamalai0A. Muthuchamy1Muthe Srikanth2Senthilnathan Natarajan3Shashank Acharya4Anup Khisti5Chun-Ping Jen6Centre for Innovative Manufacturing Research, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, IndiaDepartment of Metallurgical and Materials Engineering, NIT Tiruchirappalli, Tiruchirappalli 620015, Tamil Nadu, IndiaCentre for Innovative Manufacturing Research, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, IndiaCentre for Innovative Manufacturing Research, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, IndiaCentre for Innovative Manufacturing Research, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, IndiaCentre for Innovative Manufacturing Research, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, IndiaSchool of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung 80708, TaiwanThe effect of adding molybdenum to the heavy tungsten alloy of W-Ni-Fe on its material characteristics was examined in the current study. The elemental powders of tungsten, iron, nickel, and molybdenum, with a composition analogous to W-3Fe-7Ni-xMo (x = 0, 22.5, 45, 67.5 wt.%), were fabricated using the spark plasma sintering (SPS) technique at a sintering temperature of 1400 °C and under pressure of 50 MPa. The sintered samples were subjected to microstructural characterization and tested for mechanical strength. The smallest grain size of 9.99 microns was observed for the 45W-45Mo alloy. This alloy also gave the highest tensile and yield strengths of 1140 MPa and 763 MPa, respectively. The hardness increased with the increased addition of molybdenum. The high level of hardness was observed for 67.5Mo with a 10.8% increase in the base alloy’s hardness. The investigation resulted in the alloy of 45W-7Ni-3Fe-45Mo, observed to provide optimum mechanical properties among all the analyzed samples.https://www.mdpi.com/1996-1944/14/19/5756tungsten heavy alloyspowder metallurgyspark plasma sinteringmaterials characteristics |
| spellingShingle | A. Raja Annamalai A. Muthuchamy Muthe Srikanth Senthilnathan Natarajan Shashank Acharya Anup Khisti Chun-Ping Jen Powder Metallurgical Processing and Characterization of Molybdenum Addition to Tungsten Heavy Alloys by Spark Plasma Sintering Materials tungsten heavy alloys powder metallurgy spark plasma sintering materials characteristics |
| title | Powder Metallurgical Processing and Characterization of Molybdenum Addition to Tungsten Heavy Alloys by Spark Plasma Sintering |
| title_full | Powder Metallurgical Processing and Characterization of Molybdenum Addition to Tungsten Heavy Alloys by Spark Plasma Sintering |
| title_fullStr | Powder Metallurgical Processing and Characterization of Molybdenum Addition to Tungsten Heavy Alloys by Spark Plasma Sintering |
| title_full_unstemmed | Powder Metallurgical Processing and Characterization of Molybdenum Addition to Tungsten Heavy Alloys by Spark Plasma Sintering |
| title_short | Powder Metallurgical Processing and Characterization of Molybdenum Addition to Tungsten Heavy Alloys by Spark Plasma Sintering |
| title_sort | powder metallurgical processing and characterization of molybdenum addition to tungsten heavy alloys by spark plasma sintering |
| topic | tungsten heavy alloys powder metallurgy spark plasma sintering materials characteristics |
| url | https://www.mdpi.com/1996-1944/14/19/5756 |
| work_keys_str_mv | AT arajaannamalai powdermetallurgicalprocessingandcharacterizationofmolybdenumadditiontotungstenheavyalloysbysparkplasmasintering AT amuthuchamy powdermetallurgicalprocessingandcharacterizationofmolybdenumadditiontotungstenheavyalloysbysparkplasmasintering AT muthesrikanth powdermetallurgicalprocessingandcharacterizationofmolybdenumadditiontotungstenheavyalloysbysparkplasmasintering AT senthilnathannatarajan powdermetallurgicalprocessingandcharacterizationofmolybdenumadditiontotungstenheavyalloysbysparkplasmasintering AT shashankacharya powdermetallurgicalprocessingandcharacterizationofmolybdenumadditiontotungstenheavyalloysbysparkplasmasintering AT anupkhisti powdermetallurgicalprocessingandcharacterizationofmolybdenumadditiontotungstenheavyalloysbysparkplasmasintering AT chunpingjen powdermetallurgicalprocessingandcharacterizationofmolybdenumadditiontotungstenheavyalloysbysparkplasmasintering |