A Control Method of Grain-Boundary Brittleness by Step Cooling Technique |
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| Journal | Key Engineering Materials (Volumes 324 - 325) |
|---|---|
| Volume | Fracture and Damage Mechanics V |
| Edited by | M.H. Aliabadi, Qingfen Li, Li Li and F.-G. Buchholz |
| Pages | 39-42 |
| DOI | 10.4028/www.scientific.net/KEM.324-325.39 |
| Citation | Li Li et al., 2006, Key Engineering Materials, 324-325, 39 |
| Online since | November, 2006 |
| Authors | Li Li, Qing Fen Li, Hui Min Zhou |
| Keywords | Effective-Time-Method, Grain Boundary Activity, Step Cooling Technique |
| Abstract | For most of the experiments and the practical problems about the non-equilibrium grain-boundary segregation (NGS), segregation will always occur during continuous cooling. The effective-time-method assumed that any continuous cooling curve for a sample can be replaced by a corresponding stepped curve. In this paper, the non-equilibrium grain-boundary segregation of phosphorus in step cooling process in an industrial steel12Cr1MoVis studied based on the effective-time-method and compared with that in isothermal holding process. Results show that the calculated result is in good accordance with the experimental observation. It provides a direct support for the effective-time-method of NGS. The step cooling process can speed-up the embrittlement of the steel. Based on the step cooling technique, a control method of grain-boundary brittleness is proposed. |
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