Effects of Mo and Cu Contents on Sigma Phase Precipitation in 25Cr-5Ni-Mo-Cu-1Mn-0.18N Duplex Stainless Steel
- Resource Type
- Journal Article
- Authors
- Briony Holmes; Hongbiao Dong; Kasra Sotoudeh; Kazuhiro Ogawa; Kenta Yamada; Takahiro Osuki
- Source
- ISIJ International. 2023, 63(1):143
- Subject
- duplex stainless steel
sigma phase
time-temperature-precipitation (TTP) diagram
welding
- Language
- English
- ISSN
- 0915-1559
1347-5460
This work investigated the effects of Mo and Cu contents on sigma phase precipitation in S82551 using time-temperature-precipitation (TTP) diagram generated by experimental work and calculation. The effects of Mo and Cu contents on the nose temperature and time of C-curve were clarified and compared with S31803 (22Cr-5Ni-3Mo) and S32750 (25Cr-7Ni-4Mo), which indicates the critical heating condition to be free from sigma phase precipitation in duplex stainless steels.