Investigation of the rupture of Ti/Steel laminated composite with soft interlayers

The Effect of Soft Interlayers on the Behavior of a Four-Layer Titanium-Steel Composite at High Temperatures

“…Simulating the behavior of multi-layer titanium-steel composite was carried out using SIMULIA/ABAQUS software package by Mises model, based on the finite element method. Verification of the model was performed by earlier test results of titanium-steel composite samples at normal temperature [8].…”

“…Application of titanium-steel adapters with interlayer between titanium and steel that excludes or reduces the intensity of diffusion processes and the formation of brittle intermetallic interlayer and ridges of titanium carbides, is generally accepted for nuclear power, missile, space and cryogenic technology, where during operation equipment is subjected to heat more of 600°C [4][5][6]. Applying of a copper-niobium interlayer (diffusion barrier) in a titanium-steel composition Ti-Nb-Cu-steel maintains the mechanical properties without embrittlement due to prevention the formation of intermetallic interlayer during heating to 1000°C for several hours [5].…”

“…Regularities of change of mechanical properties of the compositions with soft interlayer are largely depend on the relative thickness of the soft sublayer χ = δ/d, where δ -thickness of the soft interlayer, d -the transverse dimension of the test sample [6].…”

Effects of Interlayer on the Microstructure and Mechanical Properties of Resistance Spot Welded Titanium/Steel Joints: A Short Review

“…Secondly, the interlayer metal does not combine with titanium or steel to form brittle intermetallic compounds, or the resulting compounds have a brittleness better than Fe-Ti intermetallic compounds [26,27]. At present, the interlayer mainly used by researchers are Cu [28][29][30], Ni [31,32], Ta [33], V [34], Nb [35,36], Ag [25] and Al [37][38][39][40]. For example, Ni and Fe do not form intermetallic compounds.…”

Compressive Strength of Four-Layer Titanium-Steel Adapter with Soft Interlayer of Varying Thickness

“…For parts of nuclear power, space and cryogenic technology operated at temperatures above 600°C, the titanium-steel composites with copper-niobium interlayer as diffusion barrier were created by VSTU [1,2]. The interlayers have a lower strength than the main layer, which should lead to a drop in peel strength, but the use of small thicknesses of copper allows to avoid it due to the effect of contact hardening [3,4].…”