Abstract
Systematic experiments were conducted on carburized 4320 steel to study thermalinduced transformation of austenite to bainite by measuring the volumetric transformation strains. Up to about 210° C, thermal-induced transformation involved a diffusion-controlled reaction and therefore was time dependent. The mechanism is similar to that described by the second stage of tempering. An Arhennius-type relation was used to model the kinetics of the reaction leading to a volume increase. A positive hydrostatic stress tended to increase the rate of transformation. The anisotropy of the transformation strains were proportional to the deviatoric stress.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 83-88 |
| Number of pages | 6 |
| Journal | Journal of Engineering Materials and Technology, Transactions of the ASME |
| Volume | 115 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 1993 |
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering