Dynamic recrystallisation in aluminium alloyed hypereutectoid steels under hot working conditions
- Dynamic recrystallisation in aluminium alloyed hypereutectoid steels under hot working conditions
- Phaniraj Madakashira; 장윤수; 김동익; 심재혁; 이충열; 이덕락
- Hypereutectoid steel; Aluminium; Dynamic recrystallisation; Mean flow stress
- Issue Date
- Materials science and technology : MST : a publication of the Institute of Metals
- VOL 26, NO 6, 714-719
- Hot deformation behaviour of hypereutectoid steels (0‧ 83–0‧ 92%C) alloyed with 0–2%Al is
investigated. Compression tests were carried out in the temperature range 1000–1100℃ at 0‧
10 s-1 strain rates. The stress–strain curves are analysed using work hardening rate flow stress
plots to determine the critical and peak stress and the corresponding strains associated with
dynamic recrystallisation. The addition of Al increases the strain hardening rate and lowers the
peak strain. There is an optimum content beyond which peak strain increases with Al addition.
Phase diagram calculations show that the multiphase microstructure present during deformation
is responsible for the non-linear effect of Al. The steady state stress is modelled using the sine
hyperbolic constitutive equation, and the activation energy for deformation is determined.
- Appears in Collections:
- KIST Publication > Article
- Files in This Item:
There are no files associated with this item.
- RIS (EndNote)
- XLS (Excel)
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.