Abstract
This study deals with the behaviour of δ ferrite during quenching, in an industrial ferritic stainless steel containing 11% Cr. The two-phase structure at high temperatures is believed to be responsible for fracture during hot-rolling. To better understand this phenomenon, solid state phase transformations occurring during quenching have been studied for various holding and starting temperatures. It is found that δ ferrite exhibits two different quenching behaviours: Type I behaviour: for temperatures higher than 1250°C δ→γ transformation is of the massive type and on quenching the δ phase transforms into austenite which is subsequently transformed into martensite. Type II behaviour: for temperatures below 1225°C the transformation becomes diffusional and slow so that the δ phase is retained in the bcc state after quenching.
Original language | English |
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Pages | 761-770 |
Number of pages | 10 |
Publication status | Published - 2005 |
Externally published | Yes |
Event | International Conference on Solid-Solid Phase Transformations in Inorganic Materials (PTM) 2005 - Phoenix Arizona USA, Phoenix, United States of America Duration: 29 May 2005 → 3 Jun 2005 |
Conference
Conference | International Conference on Solid-Solid Phase Transformations in Inorganic Materials (PTM) 2005 |
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Abbreviated title | PTM 2005 |
Country/Territory | United States of America |
City | Phoenix |
Period | 29/05/05 → 3/06/05 |
Keywords
- Austenite
- Martensite
- Massive transformation
- δ Ferrite