Study on the flash butt welding of 400 MPa ultra-fine grain steel

被引：0
|
作者：
Wang, WB [1 ]
Shi, YW
Sha, P
Lei, YP
Tian, ZL
机构：
[1] Beijing Polytech Univ, Coll Mat Sci & Engn, Beijing 100022, Peoples R China
[2] Cent Iron & Steel Res Inst, Beijing 100081, Peoples R China
来源：
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2003年 / 12卷 / 05期
关键词：
flash butt welding; mechanical property; ultra-fine grain reinforce steel bar;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A 400 MPa ultra-fine grain steel possesses high strength and toughness. Due to its fine grain size, the heat affect zone (HAZ) of the weld joint will soften during welding. The weldability of 400 MPa ultra-fine reinforced steel bar of flash butt welding is investigated by using the micro metallographical examination and macro-mechanical-property tests. The joint of flash butt welding has a superior mechanical property. The HAZ in the weld joint does not show apparent softening. There is only a localized softening spot inside the weld seam, which does not affect the property of the whole joint. Therefore, flash butt welding is appropriate for joining the 400 MPa ultra-fine grain reinforced steel bars. The resulting weld joint has excellent mechanical properties.
引用
收藏
页码：581 / 583
页数：3
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