1. Strain-induced Stabilisation of Austenite Against Bainite Transformation
S. B. Singh1 and H. K. D. H. Bhadeshia2
1Indian Institute of Technology, Kharagpur, India
2University of Cambridge, UK

2. Si to suppress carbide precipitation
Fe C Si Mn (wt%)
High hardenability
Si to suppress carbide precipitation

5. Dilatation curves for bainite

7. 500 oC, e = 0
475 oC, e = 0

8. Inhomogeneous nature of deformation (barrelling) leads to non-uniform microstructure along the compression axis.

9. 500 oC, e = 0.18, edge
500 oC, e = 0.18, center

10. 500 oC, e = 0.69, center

11. 475 oC, e = 0.18, edge
475 oC, e = 0.18, center

12. 475 oC, e = 0.36, edge
475 oC, e = 0.36, center

13. 475 oC, e = 0.69, edge
475 oC, e = 0.69, center

15. Dilatation curves for ferrite

18. Conclusion
Bainite, like martensite, shows stabilisation effects. The amount of bainite that can form at any temperature is reduced when austenite is deformed.