Grain boundary segregation and fracture behavior of boron containing Fe-Mn-Ni-(Mo,w) age hardening alloys

被引：0
|
作者：
Dong-Han Seo
Nam-Hoe Heo
Hu-Chul Lee
机构：
[1] Pohang Iron and Steel Co.,Technical Research Laboratories
[2] Ltd.,Technical Support Center
[3] Korea Electric Power Research Institute,School of Materials Science and Engineering
[4] Seoul National University,undefined
来源：
Metals and Materials | 1997年 / 3卷
关键词：
Austenite; Boron; Intergranular Fracture; Tensile Elongation; Isothermal Aging;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The effects of boron addition on the grain boundary segregation and fracture behavior of tempered Fe-Mn-Ni-Mo and Fe-Ni-Mn-W steels were investigated. High segregation of Mn to prior austenitie grain boundaries resulted in severe grain boundary embrittlement in W-bearing alloys. Boron addition did not significantly affect the grain boundary segregation of other alloying elements. Nevertheless, improvement of tensile properties is observed in 16 ppm boron doped W-bearing steel. Segregation of boron itself to grain boundaries is believed to affect the grain boundary strength of this alloy. Lower Mn segregation in Mo containing steels resulted in the ductile fracture when tempered at 480°C.
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页码：245 / 251
页数：6
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