Effect of dopant and heat treatment on the microstructure and mechanical properties of Nickel-Aluminum bronze.
The effect of dopant and heat treatment on the microstructure and mechanical properties of Nickel-aluminum bronze (Cu-10%Al-5%Ni-5%Fe-x%Mo) were extensively investigated. The cast samples were heat treated through different processes, including solutionizing, quenching, and aging; their microstructu...
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| Format: | Article |
| Language: | English |
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The Netherlands Press
2019-07-01
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| Series: | Metallurgical & Materials Engineering |
| Subjects: | |
| Online Access: | https://metall-mater-eng.com/index.php/home/article/view/423 |
| _version_ | 1797963819966791680 |
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| author | Franklin Amaechi Anene Nkem Emelike Nwankwo Victor Ugochukwu Nwoke |
| author_facet | Franklin Amaechi Anene Nkem Emelike Nwankwo Victor Ugochukwu Nwoke |
| author_sort | Franklin Amaechi Anene |
| collection | DOAJ |
| description | The effect of dopant and heat treatment on the microstructure and mechanical properties of Nickel-aluminum bronze (Cu-10%Al-5%Ni-5%Fe-x%Mo) were extensively investigated. The cast samples were heat treated through different processes, including solutionizing, quenching, and aging; their microstructures were examined using an optical microscope, scanning electron microscopy and energy dispersive spectroscopy analysis and their mechanical properties determined. The microstructure of the as-cast samples consisted of Cu-rich ‘α-phase, ‘κ-phases and small volume fraction of β'-phase while solutionizing transformed the β'-phase to a homogenous β-phase, α, and κ phases. Quenching transformed all β phase to β'-phase, however, aging the alloy precipitated fine dispersive strengthening κ-phases from the quenched microstructure. The results of the mechanical tests showed that the aged samples had improved excellent mechanical properties compared to the as-cast samples. Compared to the base alloy, the tensile strength and hardness of the aged 2% Mo sample increased by 58% and 55%, respectively while the impact strength and elongation decreased by 27% and 22%, respectively. Similarly, the tensile strength and hardness of the aged 3% Mo sample increased by 44% and 49%, respectively, while the impact strength and % elongation decreased by 23.9% and 24.9%, respectively. |
| first_indexed | 2024-04-11T01:34:16Z |
| format | Article |
| id | doaj.art-017c4a4f095d4bef8567be16084a47a9 |
| institution | Directory Open Access Journal |
| issn | 2217-8961 |
| language | English |
| last_indexed | 2024-04-11T01:34:16Z |
| publishDate | 2019-07-01 |
| publisher | The Netherlands Press |
| record_format | Article |
| series | Metallurgical & Materials Engineering |
| spelling | doaj.art-017c4a4f095d4bef8567be16084a47a92023-01-03T09:02:35ZengThe Netherlands PressMetallurgical & Materials Engineering2217-89612019-07-0125214716210.30544/423423Effect of dopant and heat treatment on the microstructure and mechanical properties of Nickel-Aluminum bronze.Franklin Amaechi Anene0Nkem Emelike Nwankwo1Victor Ugochukwu Nwoke2Metallurgical and Materials Engineering Department, Nnamdi Azikiwe University, Awka, Anambra StateMetallurgical and Materials Engineering Department, Nnamdi Azikiwe University, Awka, Anambra StateMetallurgical and Materials Engineering Department, Nnamdi Azikiwe University, Awka, Anambra StateThe effect of dopant and heat treatment on the microstructure and mechanical properties of Nickel-aluminum bronze (Cu-10%Al-5%Ni-5%Fe-x%Mo) were extensively investigated. The cast samples were heat treated through different processes, including solutionizing, quenching, and aging; their microstructures were examined using an optical microscope, scanning electron microscopy and energy dispersive spectroscopy analysis and their mechanical properties determined. The microstructure of the as-cast samples consisted of Cu-rich ‘α-phase, ‘κ-phases and small volume fraction of β'-phase while solutionizing transformed the β'-phase to a homogenous β-phase, α, and κ phases. Quenching transformed all β phase to β'-phase, however, aging the alloy precipitated fine dispersive strengthening κ-phases from the quenched microstructure. The results of the mechanical tests showed that the aged samples had improved excellent mechanical properties compared to the as-cast samples. Compared to the base alloy, the tensile strength and hardness of the aged 2% Mo sample increased by 58% and 55%, respectively while the impact strength and elongation decreased by 27% and 22%, respectively. Similarly, the tensile strength and hardness of the aged 3% Mo sample increased by 44% and 49%, respectively, while the impact strength and % elongation decreased by 23.9% and 24.9%, respectively.https://metall-mater-eng.com/index.php/home/article/view/423NiAl bronzedopantheat treatmentmicrostructurequenchingaging |
| spellingShingle | Franklin Amaechi Anene Nkem Emelike Nwankwo Victor Ugochukwu Nwoke Effect of dopant and heat treatment on the microstructure and mechanical properties of Nickel-Aluminum bronze. Metallurgical & Materials Engineering NiAl bronze dopant heat treatment microstructure quenching aging |
| title | Effect of dopant and heat treatment on the microstructure and mechanical properties of Nickel-Aluminum bronze. |
| title_full | Effect of dopant and heat treatment on the microstructure and mechanical properties of Nickel-Aluminum bronze. |
| title_fullStr | Effect of dopant and heat treatment on the microstructure and mechanical properties of Nickel-Aluminum bronze. |
| title_full_unstemmed | Effect of dopant and heat treatment on the microstructure and mechanical properties of Nickel-Aluminum bronze. |
| title_short | Effect of dopant and heat treatment on the microstructure and mechanical properties of Nickel-Aluminum bronze. |
| title_sort | effect of dopant and heat treatment on the microstructure and mechanical properties of nickel aluminum bronze |
| topic | NiAl bronze dopant heat treatment microstructure quenching aging |
| url | https://metall-mater-eng.com/index.php/home/article/view/423 |
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