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Effect of the Particle Size of γ’ Phase on the Mechanical Properties of Ni Base Superalloy
| Content Provider | Semantic Scholar |
|---|---|
| Author | Razumovskii, Igor M. Bykov, Yuriy G. Beresnev, A. G. Poklad, V. A. Razumovskiy, Vsevolod I. |
| Copyright Year | 2011 |
| Abstract | The effect of γ' particle size upon the mechanical properties of Ni base superalloy EP741NP obtained by powder metallurgy was investigated. The particle size of γ' phase in γ-γ' microstructure was varied by changing the cooling rate V from the temperature of the solid solution treatment at 1200 °C (V = 80, 200 and 400 °C \ min.). After solid solution treatment billets were subjected to aging in the standard mode. It was established that as V increases from 80 to 200 °C \ min., the average particle's size of γ' phase decreases from 0.54 microns to 0.22 microns in the aged state. This improves the characteristics of creep and low cycle fatigue at 650°C: time to rupture under load 1000 MPa increased from 132 hours to 416 hours and low cycle fatigue increased from 42,215 to 82,016 cycles. |
| File Format | PDF HTM / HTML |
| DOI | 10.4028/www.scientific.net/AMR.278.96 |
| Volume Number | 278 |
| Alternate Webpage(s) | https://www.scientific.net/AMR.278.96.pdf |
| Alternate Webpage(s) | https://doi.org/10.4028/www.scientific.net%2FAMR.278.96 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
