| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1470787 | Corrosion Science | 2009 | 7 Pages |
Abstract
The microstructure and properties of UNS S31803 duplex stainless steel had been investigated following isothermally aging in a temperature range of 450–1000 °C for 10 min, which simulates a fairly long time relative to a weld thermal cycle. The results showed that specimens aged between 600 and 950 °C are subjected to precipitation of secondary phases, such as Cr2N, σ and χ. And the most significant reduction in pitting corrosion resistance and impact energy occurs at 850 °C. Moreover, at aging temperatures below 600 °C, austenite is the preferred site for pitting initiation, which changes to precipitates modified ferrite phase at higher temperatures above 600 °C.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Bo Deng, Zhiyu Wang, Yiming Jiang, Tao Sun, Juliang Xu, Jin Li,