Transactions of Materials and Heat Treatment

Title：Metadynamic recrystallization behavior of 316LN steel

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ClassificationCode：TG316

year,vol(issue):pagenumber：2019,44(8):176-181

Abstract：

The doublepass hot compression tests were conducted by Gleeble-1500D thermal simulator under the conditions of deformation temperature of 1050-1150 ℃, strain rate of 0.01-1 s-1 and pass interval time of 10-60 s, and the meta-dynamic recrystallization behavior of 316LN stainless steel was studied. The experimental results show that the material undergoes obvious meta-dynamic recrystallization under all experimental conditions, and the influences of the deformation temperature, strain rate and pass interval time on microstructure are very significant by metallographic observations. With the increasing of deformation temperature, strain rate and pass interval time, the softening degree of material increases, and the grain structure becomes more uniform. Furthermore, based on the strainstress curves obtained from compression tests, the metadynamic recrystallization kinetics model of 316LN steel is established. Comparing with the predicted values and the experimental values, the model is of high accuracy.

Funds：

山西省自然科学基金资助项目（201601D011002）

作者简介：李景丹（1989-），女，博士研究生 E-mail：929949477@qq.com 通讯作者：刘建生（1958-），男，博士，教授 E-mail：jiansliu@163.com

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