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| Content Provider | Springer Nature Link |
|---|---|
| Author | Feng, Yicheng Cao, Fuyang Kang, Fuwei Zhang, Xuemin Yue, Hongyan |
| Copyright Year | 2014 |
| Abstract | The microstructural evolution and mechanical properties of a spray-formed superalloy were studied in this paper. Based on a better understanding of the microstructural evolution of the spray-formed superalloy during solution treatment, an optimum solution treatment process was obtained, namely, at 1,140 °C for 6 h, and air cooling (AC). The effects of the ageing treatments on the mechanical properties of the post-solution-treated spray-formed superalloy were evaluated using ageing harden curves and tensile testing. The results indicated that the maximum hardness value was achieved at 850 °C for 8 h, AC. Due to co-precipitation of primary and secondary γ′ precipitates during the heat treatment, the spray-formed superalloy obtained an excellent combination of yield strength (YS = 1,110 MPa), ultimate tensile strength (UTS = 1,503 MPa), ductility (elongation, EL = 21%) and excellent stress rupture properties at 650 °C (UTS = 1,209 MPa, EL = 15.8%). The heat treatment also improved the rupture life at 650 °C/950 MPa and 750 °C/539 MPa up to 140 h without rupturing. The tensile-fractured surfaces exhibit ductile transgranular failure feature. The optimum heat treatment process was determined to be 1,140 °C/6 h + 850 °C/8 h + AC. |
| Starting Page | 1063 |
| Ending Page | 1069 |
| Page Count | 7 |
| File Format | |
| ISSN | 10067191 |
| Journal | Acta Metallurgica Sinica (English Letters) |
| Volume Number | 27 |
| Issue Number | 6 |
| e-ISSN | 21941289 |
| Language | English |
| Publisher | The Chinese Society for Metals |
| Publisher Date | 2014-08-15 |
| Publisher Place | Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Spectroscopy/Spectrometry Tribology, Corrosion and Coatings Ageing harden Organometallic Chemistry Mechanical properties Characterization and Evaluation of Materials Metallic Materials Microstructure Spray-formed superalloy Nanotechnology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Industrial and Manufacturing Engineering Metals and Alloys |
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