We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Effect of Double-Step and Strain-Assisted Tempering on Properties of Medium-Carbon Steel.
- Authors
Salvetr, Pavel; Školáková, Andrea; Kotous, Jakub; Drahokoupil, Jan; Melzer, Daniel; Jansa, Zdeněk; Donik, Črtomir; Gokhman, Aleksandr; Nový, Zbyšek
- Abstract
The present work aimed to study the properties of medium-carbon steel during tempering treatment and to present the strength increase of medium-carbon spring steels by strain-assisted tempering (SAT). The effect of double-step tempering and double-step tempering with rotary swaging, also known as SAT, on the mechanical properties and microstructure was investigated. The main goal was to achieve a further enhancement of the strength of medium-carbon steels using SAT treatment. The microstructure consists of tempered martensite with transition carbides in both cases. The yield strength of the DT sample is 1656 MPa, while that of the SAT sample is about 400 MPa higher. On the contrary, plastic properties such as the elongation and reduction in area have lower values after SAT processing, about 3% and 7%, respectively, compared to the DT treatment. Grain boundary strengthening from low-angle grain boundaries can be attributed to the increase in strength. Based on X-ray diffraction analysis, a lower dislocation strengthening contribution was determined for the SAT sample compared to the double-step tempered sample.
- Subjects
TEMPERING; STEEL; CRYSTAL grain boundaries; MARTENSITE; X-ray diffraction; CARBON steel
- Publication
Materials (1996-1944), 2023, Vol 16, Issue 5, p2121
- ISSN
1996-1944
- Publication type
Article
- DOI
10.3390/ma16052121