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物理学报. 2009, 58(13): 183-S188.
doi: 10.7498/aps.58.183.
高温塑性变形引起的P非平衡晶界偏聚
- 收稿日期: 2008-12-30
- 修回日期: 2009-03-05
- 刊出日期: 2009-12-21
English Abstract
Non-equilibrium grain boundary segregation of phosphorous during high temperature plastic deformation
- Received Date:
30 December 2008
- Accepted Date:
05 March 2009
- Published Online:
21 December 2009
Abstract: The quasi-thermodynamics and the kinetics of deformation-induced non-equilibrium grain boundary segregation are described. This model is used to predict non-equilibrium segregation of P during high temperature plastic deformation in an austenite microstructure. There is a segregation concentration peak of P near 800 ℃ for a strain rate of 1×10-3 s-1 and the deformation magnitude is 20%. When the deformation reaches 20% in magnitude at 1000 ℃ the segregation of P at grain boundaries increases with increasing strain rate. The predictions are generally consistent with some available experimental observations.
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