Back to Search
Start Over
Precipitation Strengthening Behavior of 15-5PH Stainless Steel During Aging at 500 °C.
- Source :
- Journal of Materials Engineering & Performance; Dec2023, Vol. 32 Issue 23, p10526-10532, 7p
- Publication Year :
- 2023
-
Abstract
- The mechanical property and microstructures of the 15-5PH stainless steel aged at 500 °C for different times have been studied in detail by using transmission electron microscopy and atom probe tomography. The precipitation-hardening effect is significant during aging and the peak hardness occurs at 2 h, but prolonged aging decreases the hardness significantly. The peak hardness is attributed to the formation of a large number of Cu-rich precipitates of 3-6 nm in diameter, with the Ni and Mn atoms segregating around the Cu-rich precipitates and forming a core–shell structure. The over-aging process increases the size of Cu-rich precipitates and causes Si and Nb atoms to segregate to the vicinity of Ni and Mn atoms, forming Nb-rich and NbN-rich particles. The formation of various phase precipitates, including possible G-phase particles, and their effects on mechanical property are discussed. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10599495
- Volume :
- 32
- Issue :
- 23
- Database :
- Complementary Index
- Journal :
- Journal of Materials Engineering & Performance
- Publication Type :
- Academic Journal
- Accession number :
- 173806358
- Full Text :
- https://doi.org/10.1007/s11665-023-07879-5