Mechanical performance of 22SiMn2TiB steel welded with low-transformation-temperature filler wire and stainless steel filler wire

扫码查看

原文链接

万方数据

外文摘要：TX-80 low-transformation-temperature(LTT)welding wire was used to replace the traditional ER 307Si welding wire to realize the connection of 22SiMn2TiB armor steel in manual overlay welding.The previously existing issues,such as welding cracks,large welding deformation,and severe welding residual stress,were solved to ensure good strength and ductility requirements.In particular,with the same welding conditions,TX-80 LTT wire eliminates welding cracks.It reduces the welding deformation no matter the base pretreatment of pre-setting angle or no pre-setting angle.By comparison,it was found that the microstructure at the TX-80 weld is mainly composed of martensite and a small amount of retained austenite.In contrast,the microstructure of the ER 307Si weld consists of a large amount of austenite and a small amount of skeleton-like ferrite.The variation trend of residual stress and microhardness from the weld to the base were investigated and compared with the mechanical properties of base materials.The TX-80 and the ER 307Si tensile samples elongation is 6.76％and 6.01％,while the ultimate tensile strengths are 877 and 667 MPa,respectively.The average impact toughness at room temperature of the ER 307Si weld is 143.9 J/cm2,much higher than that of the TX-80 weld,which is only 36.7 J/cm2.The relationship between impact and tensile properties with microstructure species and distribution was established.In addition,the fracture surface of the tensile and the impact samples was observed and analyzed.Deeper dimples,fewer pores,larger radiation zone,and shear lips of TX-80 samples indicate better tensile ductility and worse impact toughness than those of ER 307Si weld.

外文关键词：

Low-transformation-temperature material22SiMn2TiB steelWelding deformationResidual stressMartensitic transformationMechanical property

作者：

Zi-dong Lin、Kai-jie Song、Zhen Sun、Zi-qian Zhu、Xue-feng Zhao、Constantinos Goulas、Wei Ya、Xing-hua Yu

展开 >

作者单位：

School of Materials Science and Engineering,Beijing Institute of Technology,Beijing 100081,China

Beijing Institute of Technology Chongqing Innovation Center,Chongqing 401120,China

Department of Design Production and Management,Faculty of Engineering Technology,University of Twente,Enschede 7500 AE,The Netherlands

Rotterdam Additive Manufacture Fieldlab(RAMLAB),Rotterdam 3089 JW,The Netherlands

展开 >

基金：

National Key Laboratory Foundation of Science and Technology on Materials under Shock and Impact国家自然科学基金Beijing Institute of Technology Young Scholar Startup Program国家留学基金委项目Experimental Center of Advanced Materials(ECAM)of the Beijing Institute of Technology

项目编号：

2021ZX52002222019U2141216202106030118

出版年：

2024

DOI：

10.1007/s42243-023-01098-x

钢铁研究学报(英文版)

钢铁研究总院

钢铁研究学报(英文版)

CSTPCD

影响因子：0.584

ISSN：1006-706X

年,卷(期)：2024.31(4)