Interface Characteristic and Properties of Stainless Steel/HSLA Steel Clad Plate by Vacuum Rolling Cladding

Abstract

304 austenite stainless steel plate and HSLA steel plate were subjected to vacuum rolling cladding (VRC). The microstructure characteristic and properties of the clad interface were investigated in detail. During the VRC process, the clad interface was held at a high vacuum all the time, resulting in significantly decreased oxidation at the interface. A small amount of very fine oxide particles (diameter < 0:5 mm) can be found at the clad interface, and no obvious defects were observed. The remarkable diffusion of Ni and Cr elements led to the formation of a transition zone with high hardness. The shear strength of the clad interface was as high as 487 MPa, and the fracture occurred at the HSLA steel near the transition zone. No cracks were found at the clad interface after the 180 bending tests with both outside and inside manners.

Superior bonding properties of dissimilar steel joint produced by electroslag remelting

“…The material also exhibited a stable bonding structure without defects and imperfect bonding. Xie et al [22] concluded that a defect-free clad interface was the key factor for excellent clad plate. Moreover, though the alloy demonstrated asymmetric distribution of martensite, the phase fraction gradually changed to minimize the residual stress.…”

“…The combination of EW and hot rolling led to a bonding strength of 384 MPa [21]. Xie et al [22] increased the bonding strength to 487 MPa by performing the HRB process in a vacuum to suppress the oxidation. Venkateswara Rao et al [14] reported a bonding strength of 488 MPa for WO-clad steel.…”

Investigation of the Evolution of Central Defects in Ultra-Heavy Plate Rolled Using Gradient Temperature Process

“…Based on previous studies of clad rolling processes, [18][19][20][21] the effects of GTR on clad interfacial characteristics and defect closure capability were investigated and compared with those of UTR. Because of the limited access to of rolling mill, the rolling experiments were carried out in a laboratory.…”

Mechanical bonding properties and interfacial morphologies of austenitic stainless steel clad plates

“…According to the literature [23,24], diffusion coefficients of Ni and Cr in ɣ-Fe at the rolling temperature of 1180°C were calculated to be approximately 5.7×10 -11 and 4.6×10 -11 Cm 2 /s, respectively. The bond interface is expected to reach such high temperature (1200°C) during hot-roll cladding process, and hence these diffusion coefficients are considered valid for the present study.…”

“…The later have also shown that there was a diffusion phenomenon of chemical elements (C, Cr, Ni, Mo,..) around the interface line and resulted in the appearance of brittle intermetallic diffusion layer [22][23][24][25].…”