Szczegóły publikacji
Opis bibliograficzny
Thermal stability of rolled metastable austenitic stainless steel 1.4307 studied using positron annihilation / E. Dryzek, M. Sarnek, M. WRÓBEL // Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials ; ISSN 1073-5623. — 2019 — vol. 50A iss. 2, s. 581–589. — Bibliogr. s. 589. — Publikacja dostępna online od: 2018-12-07
Autorzy (3)
- Dryzek Ewa
- Sarnek M.
- AGHWróbel Mirosław
Dane bibliometryczne
| ID BaDAP | 119820 |
|---|---|
| Data dodania do BaDAP | 2019-01-31 |
| Tekst źródłowy | URL |
| DOI | 10.1007/s11661-018-5053-x |
| Rok publikacji | 2019 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Metallurgical and Materials Transactions, A, Physical Metallurgy and Materials Science |
Abstract
Positron annihilation spectroscopy (PAS) was used in the study of cumulative isochronal and isothermal annealing of rolled 1.4307 (EN) stainless steel (SS). Due to different rolling temperatures, the SS samples varied in the -martensite volume fraction from 0.09 to 0.91. The measurements of positron annihilation characteristics, i.e., Doppler broadening (DB) of the annihilation line, showed a gradual annealing of vacancies in the temperature range between 200 degrees C and 400 degrees C, which indicated the first stage of recovery. This first stage of recovery did not change the microhardness. In the temperature range from 475 degrees C to 600 degrees C, a decrease in the microhardness and generation of new open volume defects accompanying the reversion of -martensite to austenite was observed. The amount of these defects correlated with the initial -martensite volume fraction. Their formation could be related to the volume contraction occurring during bcc/fcc transformation. The different chemical surroundings suggested that the positron trapping defects were associated with the metal carbide precipitates.