The Effect of Hot Oscillatory Pressing Temperature on Microstructure and Tensile Behavior of Powder Metallurgy Superalloy
The effect of the hot oscillatory pressing (HOPing) temperature on the microstructure and tensile behavior of the powder metallurgy superalloys was investigated and compared with those of the hot pressed (HPed) sample. The results show that as the HOPing temperature rises, the pores and residual den...
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| Format: | Article |
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MDPI AG
2022-09-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/12/10/1652 |
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| author | Guizhong Li Dejian Sun Jiachen Kang Yang Gao Xuewei Yan Qiancheng Gao Ka Gao |
| author_facet | Guizhong Li Dejian Sun Jiachen Kang Yang Gao Xuewei Yan Qiancheng Gao Ka Gao |
| author_sort | Guizhong Li |
| collection | DOAJ |
| description | The effect of the hot oscillatory pressing (HOPing) temperature on the microstructure and tensile behavior of the powder metallurgy superalloys was investigated and compared with those of the hot pressed (HPed) sample. The results show that as the HOPing temperature rises, the pores and residual dendrites disappear, the grain size becomes coarser and more uniform, the prior particle boundaries (PPBs) scale decreases; the yield strength decreases gradually; the ultimate tensile strength and elongation increase first and then decrease; the tensile property stability gradually increases. The highest ultimate tensile strength and elongation of 1403 MPa and 35%, respectively, are reached when the HOPing temperature is 1160 °C. The fracture mode of the sample hot oscillatory pressed (HOPed) at 1160 °C is a transgranular and intergranular mixed fracture. Compared with the HPed sample, room temperature tensile properties of the HOPed sample improve remarkably due to the reduced size and density of PPBs precipitates. |
| first_indexed | 2024-03-09T19:48:46Z |
| format | Article |
| id | doaj.art-e673cd4bba8240bca7e3085425c2a621 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-09T19:48:46Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-e673cd4bba8240bca7e3085425c2a6212023-11-24T01:18:30ZengMDPI AGMetals2075-47012022-09-011210165210.3390/met12101652The Effect of Hot Oscillatory Pressing Temperature on Microstructure and Tensile Behavior of Powder Metallurgy SuperalloyGuizhong Li0Dejian Sun1Jiachen Kang2Yang Gao3Xuewei Yan4Qiancheng Gao5Ka Gao6School of Materials Science and Engineering, Zhengzhou University of Aeronautics, Zhengzhou 450046, ChinaSchool of Materials Science and Engineering, Zhengzhou University of Aeronautics, Zhengzhou 450046, ChinaSchool of Materials Science and Engineering, Zhengzhou University of Aeronautics, Zhengzhou 450046, ChinaSchool of Materials Science and Engineering, Zhengzhou University of Aeronautics, Zhengzhou 450046, ChinaSchool of Aero Engine, Zhengzhou University of Aeronautics, Zhengzhou 450046, ChinaSchool of Materials Science and Engineering, Zhengzhou University of Aeronautics, Zhengzhou 450046, ChinaSchool of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, ChinaThe effect of the hot oscillatory pressing (HOPing) temperature on the microstructure and tensile behavior of the powder metallurgy superalloys was investigated and compared with those of the hot pressed (HPed) sample. The results show that as the HOPing temperature rises, the pores and residual dendrites disappear, the grain size becomes coarser and more uniform, the prior particle boundaries (PPBs) scale decreases; the yield strength decreases gradually; the ultimate tensile strength and elongation increase first and then decrease; the tensile property stability gradually increases. The highest ultimate tensile strength and elongation of 1403 MPa and 35%, respectively, are reached when the HOPing temperature is 1160 °C. The fracture mode of the sample hot oscillatory pressed (HOPed) at 1160 °C is a transgranular and intergranular mixed fracture. Compared with the HPed sample, room temperature tensile properties of the HOPed sample improve remarkably due to the reduced size and density of PPBs precipitates.https://www.mdpi.com/2075-4701/12/10/1652powder metallurgy superalloyshot oscillatory pressingtensile behaviorprior particle boundary |
| spellingShingle | Guizhong Li Dejian Sun Jiachen Kang Yang Gao Xuewei Yan Qiancheng Gao Ka Gao The Effect of Hot Oscillatory Pressing Temperature on Microstructure and Tensile Behavior of Powder Metallurgy Superalloy Metals powder metallurgy superalloys hot oscillatory pressing tensile behavior prior particle boundary |
| title | The Effect of Hot Oscillatory Pressing Temperature on Microstructure and Tensile Behavior of Powder Metallurgy Superalloy |
| title_full | The Effect of Hot Oscillatory Pressing Temperature on Microstructure and Tensile Behavior of Powder Metallurgy Superalloy |
| title_fullStr | The Effect of Hot Oscillatory Pressing Temperature on Microstructure and Tensile Behavior of Powder Metallurgy Superalloy |
| title_full_unstemmed | The Effect of Hot Oscillatory Pressing Temperature on Microstructure and Tensile Behavior of Powder Metallurgy Superalloy |
| title_short | The Effect of Hot Oscillatory Pressing Temperature on Microstructure and Tensile Behavior of Powder Metallurgy Superalloy |
| title_sort | effect of hot oscillatory pressing temperature on microstructure and tensile behavior of powder metallurgy superalloy |
| topic | powder metallurgy superalloys hot oscillatory pressing tensile behavior prior particle boundary |
| url | https://www.mdpi.com/2075-4701/12/10/1652 |
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