表面粗糙度对热轧不锈钢复合板界面质量的影响

doi:10.11896/cldb.20020029

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Abstract In order to study the influence of slab surface roughness on the interface quality of stainless steel clad plate, a 3D thermal-force-coupled finite element model for hot rolling forming of non-co-nodes of stainless steel composite plates was established based on MSC.Marc software. The effect of friction coefficient between bimetals on the interface adhesion characteristics of the rolling deformation zone of composite plates were studied. At the same time, hot rolling tests and performance evaluation tests of slabs with different surface roughness were carried out. The results show that when the friction coefficient between bimetals increases, the earlier the bimetal bonding occurs in the rolling deformation zone. The larger surface roughness of slab inhibits the diffusion of carbon elements at the interface, but it is also more likely to cause the formation of interfacial compounds and holes. The results of tension shear test show that the shear strength of clad plate with Ra=7.6 μm is the highest, reaching 384.81 MPa, and that of clad plate with Ra=1.6 μm is 365.85 MPa. Both samples of tension-shear are ductile fracture. For the clad plate with Ra=15.6 μm, due to the hole defects in the interface, brittle fracture occurs, with the lowest tensile-shear strength of 321.74 MPa.

Key words： stainless steel clad plate finite element model surface roughness shear strength

Published: 10 May 2021

CLC number:

TG335.81

Fund:Joint Fund for Iron and Steel Research of the National Natural Science Foundation of China and Baosteel Group Corporation (U1660111), the Natural Science Foundation-High End Iron and Steel Metallurgy Foundation of Hebei Province (E2020203033).

About author:: Herong Jin received his B.E. degree in mechanical design and theory and Ph.D. degree in Detection Techno-logy and Instrument from the Yanshan University in Sep. 2002—Jun. 2007. He was appointed to the faculty upon graduation, and is currently a Ph. D. tutor of the YSU. He has published more than 60 journal papers as the first author, applied more than 60 national invention patents and 30 of them were authorized. In addition, he is also a reviewer of several academic journals. His research interests focus on the advanced metals with national research priority, the mechanism and performance evaluation method of bimetal composite for-ming under extreme conditions.

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	JIN Herong
	ZHANG Zhaorui
	HAN Minfeng
	JING Shitao
	ZHAO Dingxuan

Cite this article:

JIN Herong,ZHANG Zhaorui,HAN Minfeng, et al. Effect of Surface Roughness on Interface Quality of Hot Rolled Stainless Steel Clad Plate[J]. Materials Reports, 2021, 35(8): 8151-8156.

URL:

http://www.mater-rep.com/EN/10.11896/cldb.20020029 OR http://www.mater-rep.com/EN/Y2021/V35/I8/8151

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