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
收藏
页码：268 / 273
页数：6
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