Determination of hardness in welded rail surface via Barkhausen noise

被引：0
|
作者：
Zhang, Xiang [1 ]
Qiao, Sen [2 ]
Peng, Jian-ping [1 ]
Gao, Xiao-rong [1 ]
Dai, An [3 ]
Li, Wei [3 ]
机构：
[1] Southwest Jiaotong Univ, Photoelect Engn Inst, Chengdu, Peoples R China
[2] China Railway Xian Grp Co Ltd, Xian Rolling Stock Depot, Xian, Peoples R China
[3] Southwest Jiaotong Univ, Sch Mech Engn, Chengdu, Peoples R China
来源：
PROCEEDINGS OF 2019 FAR EAST NDT NEW TECHNOLOGY & APPLICATION FORUM (FENDT) | 2019年
关键词：
Hyper-eutectoid rail; Barkhausen noise; welding; hardness test; STEEL WELDMENTS;
D O I：
10.1109/fendt47723.2019.8962626
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
At present, the railway mainly uses eutectoid pearlite rails. The hyper-eutectoid steel improves the strength and hardness of the rail compared to the eutectoid pearlite steel, and is now laid on heavy-duty railway lines. Aiming at the failure of welded rail, welding surface was tested by the magnetic Barkhausen noise (MBN) method. Combined with the surface hardness test and metallographic analysis, hardness changed and structural transformation caused by flash welding was analyzed from the microscopic point of view. The relationship between hardness and MBN signal was quantitatively analyzed, results showed that there was a good correlation between two parameters.
引用
收藏
页码：158 / 162
页数：5
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