Development of novel lightweight metastable metal - (metal + ceramic) composites using a new powder metallurgy approach
In the current study, metal-(metal + ceramic) composites composed of biocompatible elements, magnesium (Mg), zinc (Zn), calcium (Ca) and manganese (Mn) were synthesized using a sinter-less powder metallurgy method. The composite has a composition of Mg₄₉Zn₄₉Ca₁Mn₁ (wt.%) in which the compositional r...
| Main Authors: | , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2021
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/148592 |
| _version_ | 1811678562944548864 |
|---|---|
| author | Tun, Khin Sandar Padnuru Sripathy, Akshay Tekumalla, Sravya Gupta, Manoj |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Tun, Khin Sandar Padnuru Sripathy, Akshay Tekumalla, Sravya Gupta, Manoj |
| author_sort | Tun, Khin Sandar |
| collection | NTU |
| description | In the current study, metal-(metal + ceramic) composites composed of biocompatible elements, magnesium (Mg), zinc (Zn), calcium (Ca) and manganese (Mn) were synthesized using a sinter-less powder metallurgy method. The composite has a composition of Mg₄₉Zn₄₉Ca₁Mn₁ (wt.%) in which the compositional ratio between Mg and Zn was chosen to be near eutectic Mg-Zn composition. The synthesis method was designed to avoid/minimize intermetallic formation by using processing temperatures lower than the Mg-Zn binary eutectic temperature (~ 340 °C). The synthesis process involved extrusion of green compacts at two different temperatures, 150 °C and 200 °C, without sintering. Extrusion was performed directly on the green compacts as well as on the compacts soaked at temperatures of 150 °C and 200 °C, respectively. Microstructure and mechanical properties of the materials synthesized under various processing conditions were investigated. Effect of extrusion temperature as well as soaking temperature on the materials' properties were also evaluated in details and different properties showed an optimum under different conditions. All the synthesized materials showed no evidence of intermetallic formation which was confirmed by SEM/EDS, XRD, and Differential Scanning Calorimetry (DSC) techniques. The study establishes development of unconventional metal-(metal + ceramic) eco-friendly composites and provides important insight into realizing certain properties without using sintering step thus to minimize the energy consumption of the process. The study also highlights the use of magnesium turnings (recyclability) to develop advanced materials. |
| first_indexed | 2024-10-01T02:55:15Z |
| format | Journal Article |
| id | ntu-10356/148592 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:55:15Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1485922021-05-10T04:16:26Z Development of novel lightweight metastable metal - (metal + ceramic) composites using a new powder metallurgy approach Tun, Khin Sandar Padnuru Sripathy, Akshay Tekumalla, Sravya Gupta, Manoj School of Mechanical and Aerospace Engineering Engineering::Mechanical engineering Magnesium Powder Metallurgy In the current study, metal-(metal + ceramic) composites composed of biocompatible elements, magnesium (Mg), zinc (Zn), calcium (Ca) and manganese (Mn) were synthesized using a sinter-less powder metallurgy method. The composite has a composition of Mg₄₉Zn₄₉Ca₁Mn₁ (wt.%) in which the compositional ratio between Mg and Zn was chosen to be near eutectic Mg-Zn composition. The synthesis method was designed to avoid/minimize intermetallic formation by using processing temperatures lower than the Mg-Zn binary eutectic temperature (~ 340 °C). The synthesis process involved extrusion of green compacts at two different temperatures, 150 °C and 200 °C, without sintering. Extrusion was performed directly on the green compacts as well as on the compacts soaked at temperatures of 150 °C and 200 °C, respectively. Microstructure and mechanical properties of the materials synthesized under various processing conditions were investigated. Effect of extrusion temperature as well as soaking temperature on the materials' properties were also evaluated in details and different properties showed an optimum under different conditions. All the synthesized materials showed no evidence of intermetallic formation which was confirmed by SEM/EDS, XRD, and Differential Scanning Calorimetry (DSC) techniques. The study establishes development of unconventional metal-(metal + ceramic) eco-friendly composites and provides important insight into realizing certain properties without using sintering step thus to minimize the energy consumption of the process. The study also highlights the use of magnesium turnings (recyclability) to develop advanced materials. Ministry of Education (MOE) Published version This research was funded by Ministry of Education, Singapore, WBS# R 265-000-622-112. 2021-05-10T04:16:26Z 2021-05-10T04:16:26Z 2020 Journal Article Tun, K. S., Padnuru Sripathy, A., Tekumalla, S. & Gupta, M. (2020). Development of novel lightweight metastable metal - (metal + ceramic) composites using a new powder metallurgy approach. Materials, 13(15). https://dx.doi.org/10.3390/ma13153283 1996-1944 https://hdl.handle.net/10356/148592 10.3390/ma13153283 32718023 15 13 en WBS# R 265-000-622-112 Materials © 2020 The Author(s). Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). application/pdf |
| spellingShingle | Engineering::Mechanical engineering Magnesium Powder Metallurgy Tun, Khin Sandar Padnuru Sripathy, Akshay Tekumalla, Sravya Gupta, Manoj Development of novel lightweight metastable metal - (metal + ceramic) composites using a new powder metallurgy approach |
| title | Development of novel lightweight metastable metal - (metal + ceramic) composites using a new powder metallurgy approach |
| title_full | Development of novel lightweight metastable metal - (metal + ceramic) composites using a new powder metallurgy approach |
| title_fullStr | Development of novel lightweight metastable metal - (metal + ceramic) composites using a new powder metallurgy approach |
| title_full_unstemmed | Development of novel lightweight metastable metal - (metal + ceramic) composites using a new powder metallurgy approach |
| title_short | Development of novel lightweight metastable metal - (metal + ceramic) composites using a new powder metallurgy approach |
| title_sort | development of novel lightweight metastable metal metal ceramic composites using a new powder metallurgy approach |
| topic | Engineering::Mechanical engineering Magnesium Powder Metallurgy |
| url | https://hdl.handle.net/10356/148592 |
| work_keys_str_mv | AT tunkhinsandar developmentofnovellightweightmetastablemetalmetalceramiccompositesusinganewpowdermetallurgyapproach AT padnurusripathyakshay developmentofnovellightweightmetastablemetalmetalceramiccompositesusinganewpowdermetallurgyapproach AT tekumallasravya developmentofnovellightweightmetastablemetalmetalceramiccompositesusinganewpowdermetallurgyapproach AT guptamanoj developmentofnovellightweightmetastablemetalmetalceramiccompositesusinganewpowdermetallurgyapproach |