Effect of Boron on the Hot Ductility of Resulfurized Low-Carbon Free-Cutting Steel

被引：1

作者：

Liu, Hai-tao ^{[1
,2
]}

Chen, Wei-qing ^{[1
,2
]}

机构：

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

[2] Beijing Univ Sci & Technol, Sch Met & Ecol Engn, Beijing 100083, Peoples R China

来源：

METAL SCIENCE AND HEAT TREATMENT | 2015年 / 57卷 / 5-6期

关键词：

free-cutting steel; boron; hot ductility; grain boundary segregation; DYNAMIC RECRYSTALLIZATION; SULFUR; NB; PRECIPITATION; BEHAVIOR; ELEMENTS;

D O I：

10.1007/s11041-015-9873-7

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The hot ductility of resulfurized low-carbon free-cutting steel with boron additives is studied in the temperature range 850 - 1200A degrees C with the help of a Gleeble-1500 thermomechanical simulator. The introduction of boron increases hot ductility, especially at 900 - 1050A degrees C. In the single-phase austenitic region, this effect is caused by segregation of boron over grain boundaries, acceleration of dynamic recrystallization, and solid-solution softening of deformed austenite.

引用

页码：268 / 273

页数：6

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