Effect on hardness and microstructures of rail joint with ultra-narrow gap arc welding by post weld heat treatment

doi:10.4028/www.scientific.net/KEM.737.90

CORC > 兰州理工大学 > 兰州理工大学 > 省部共建有色金属先进加工与再利用国家重点实验室

	Effect on hardness and microstructures of rail joint with ultra-narrow gap arc welding by post weld heat treatment
	Gong, Lian; Zhu, Liang; Zhou, Hong Xiang
	2017
会议日期	October 14, 2016 - October 16, 2016
会议地点	Phuket, Thailand
关键词	Binary alloys Electric welding Gas welding Heat treatment Manganese alloys Microstructure Scanning electron microscopy Stress relief Uranium alloys Welds Base metals Microhardness tests Narrow gap Narrow gap welding Post weld heat treatment Rail joint Stress relief annealing Weld seam
卷号	737 KEM
DOI	10.4028/www.scientific.net/KEM.737.90
页码	90-94
英文摘要	U71Mn rails were welded by ultra-narrow gap welding with constrained arc by flux strips, then normalizing treatment and stress relief annealing were performed for the joints. Another sample with no heat treatment, was studied in comparison. The effect of post weld heat treatment on the hardness and microstructure of rail joint were studied by scanning electron microscope (SEM) and microhardness test. The test results showed that normalizing treatment can improve the hardness of weld seam and base metal, and stress relief annealing couldn't improve the hardness of joints obviously. © 2017 Trans Tech Publications.
会议录	Key Engineering Materials
会议录出版者	Trans Tech Publications Ltd
语种	英语
ISSN号	10139826
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/118009]
专题	省部共建有色金属先进加工与再利用国家重点实验室材料科学与工程学院
作者单位	State Key Laboratory of Gansu Advanced Non-Ferrous Metal Materials, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Gong, Lian,Zhu, Liang,Zhou, Hong Xiang. Effect on hardness and microstructures of rail joint with ultra-narrow gap arc welding by post weld heat treatment[C]. 见:. Phuket, Thailand. October 14, 2016 - October 16, 2016.