Beneficial effect of B on hot ductility of 20CrMnTi steel with 0.05% Sn

被引：5

作者：

Peng, Hongbing ^{[1
]}

Chen, Weiqing ^{[1
]}

Chen, Lie ^{[2
]}

Guo, Dong ^{[2
]}

机构：

[1] Univ Sci & Technol Beijing, State Key Lab Adv Met, Beijing 100083, Peoples R China

[2] Xining Special Steel Co Ltd, Xining 810005, Peoples R China

来源：

METALLURGICAL RESEARCH & TECHNOLOGY | 2014年 / 111卷 / 04期

关键词：

Boron; tin; hot ductility; 20CrMnTi steel; AUSTENITIC STAINLESS-STEEL; GRAIN-BOUNDARY SEGREGATION; TRANSVERSE CRACKING; BORON;

D O I：

10.1051/metal/2014027

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The beneficial effect of B on the hot ductility of 20CrMnTi steel with 0.05% Sn was investigated. The results show that there is a trough in the hot ductility-temperature curve. With the increase in the B content, the trough shifts to a lower temperature and becomes shallow, and the hot brittle range becomes narrow. In addition, B greatly enhancing the hot ductility was due mainly to its suppressing the Sn segregation, retarding the austenite/ferrite deformation, accelerating the onset of dynamic recrystallization (DRX) and promoting the intragranular nucleation of ferrite. Moreover, in the present case, adding 92 ppm B can nucleation of ferrite. Moreover, in the present case, adding 92 ppm B can obtain the best effect in improving the hot ductility of 20CrMnTi steel with 0.05% Sn.

引用

页码：221 / 227

页数：7

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