Central Composite Experiment Design (CCD)-Response Surface Method (RSM) to Optimize the Sintering Process of Ti-6Al-4V Alloy
It is widely acknowledged that the blended elemental (BE) powder metallurgy (PM) Ti6Al4V alloy attracted unusual due to its low cost and comprehensive mechanical properties. However, the high porosity and mediocre mechanical properties of traditional vacuum sintering limited its application. To achi...
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MDPI AG
2021-01-01
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| Online Access: | https://www.mdpi.com/2075-4701/11/2/197 |
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| author | Jing Xia Shaopeng Liu Bing Zhang Yungui Chen |
| author_facet | Jing Xia Shaopeng Liu Bing Zhang Yungui Chen |
| author_sort | Jing Xia |
| collection | DOAJ |
| description | It is widely acknowledged that the blended elemental (BE) powder metallurgy (PM) Ti6Al4V alloy attracted unusual due to its low cost and comprehensive mechanical properties. However, the high porosity and mediocre mechanical properties of traditional vacuum sintering limited its application. To achieve better mechanical performance, the central composite designs (CCDs) method was employed to analyze the influence of sintering parameters, such as sintering temperature (St), heating rate (Hr), and holding time (Ht). The results indicated that St makes the most significant contribution to compressive strength and sintering density, accounting for 95.5% and 86.54% respectively. In addition, Ht makes the most significant contribution to compression ratio, which accounted for 89.35%. Through the analysis of response surface methodology (RSM), the optimum sintering parameters (St, Ht, Hr) could be considered to be 1300 °C, 148 min and 5 °C/min. In addition, verification experiments were carried out under the optimum conditions, and the experimental results were in good agreement with the predicted values, since the deviation of the predicted and experimental values was less than 4.9%. Therefore, the results of this study could certify the reliability of CCDs method, which would contribute to the development of titanium alloys with low cost and high mechanical properties. |
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| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-09T03:57:32Z |
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| spelling | doaj.art-724a83a18e4c4c86b2938239695f58532023-12-03T14:17:59ZengMDPI AGMetals2075-47012021-01-0111219710.3390/met11020197Central Composite Experiment Design (CCD)-Response Surface Method (RSM) to Optimize the Sintering Process of Ti-6Al-4V AlloyJing Xia0Shaopeng Liu1Bing Zhang2Yungui Chen3College of Materials Science and Engineering, Sichuan University, Chengdu 610065, ChinaCollege of Materials Science and Engineering, Sichuan University, Chengdu 610065, ChinaCollege of Materials Science and Engineering, Sichuan University, Chengdu 610065, ChinaEngineering Research Center of Alternative Energy Materials & Devices, Ministry of Education, Chengdu 610065, ChinaIt is widely acknowledged that the blended elemental (BE) powder metallurgy (PM) Ti6Al4V alloy attracted unusual due to its low cost and comprehensive mechanical properties. However, the high porosity and mediocre mechanical properties of traditional vacuum sintering limited its application. To achieve better mechanical performance, the central composite designs (CCDs) method was employed to analyze the influence of sintering parameters, such as sintering temperature (St), heating rate (Hr), and holding time (Ht). The results indicated that St makes the most significant contribution to compressive strength and sintering density, accounting for 95.5% and 86.54% respectively. In addition, Ht makes the most significant contribution to compression ratio, which accounted for 89.35%. Through the analysis of response surface methodology (RSM), the optimum sintering parameters (St, Ht, Hr) could be considered to be 1300 °C, 148 min and 5 °C/min. In addition, verification experiments were carried out under the optimum conditions, and the experimental results were in good agreement with the predicted values, since the deviation of the predicted and experimental values was less than 4.9%. Therefore, the results of this study could certify the reliability of CCDs method, which would contribute to the development of titanium alloys with low cost and high mechanical properties.https://www.mdpi.com/2075-4701/11/2/197powder metallurgycentral composite designsmicrostructuremechanical propertyANOVA |
| spellingShingle | Jing Xia Shaopeng Liu Bing Zhang Yungui Chen Central Composite Experiment Design (CCD)-Response Surface Method (RSM) to Optimize the Sintering Process of Ti-6Al-4V Alloy Metals powder metallurgy central composite designs microstructure mechanical property ANOVA |
| title | Central Composite Experiment Design (CCD)-Response Surface Method (RSM) to Optimize the Sintering Process of Ti-6Al-4V Alloy |
| title_full | Central Composite Experiment Design (CCD)-Response Surface Method (RSM) to Optimize the Sintering Process of Ti-6Al-4V Alloy |
| title_fullStr | Central Composite Experiment Design (CCD)-Response Surface Method (RSM) to Optimize the Sintering Process of Ti-6Al-4V Alloy |
| title_full_unstemmed | Central Composite Experiment Design (CCD)-Response Surface Method (RSM) to Optimize the Sintering Process of Ti-6Al-4V Alloy |
| title_short | Central Composite Experiment Design (CCD)-Response Surface Method (RSM) to Optimize the Sintering Process of Ti-6Al-4V Alloy |
| title_sort | central composite experiment design ccd response surface method rsm to optimize the sintering process of ti 6al 4v alloy |
| topic | powder metallurgy central composite designs microstructure mechanical property ANOVA |
| url | https://www.mdpi.com/2075-4701/11/2/197 |
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