Diffusion bonding between commercially pure titanium and micro-duplex stainless steel

Kundu, Sukumar; Chatterjee, S.

doi:10.1016/j.msea.2007.07.033

Cited by 82 publications

(34 citation statements)

References 18 publications

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“…Reaction index of '2' in the present study reveals the rate controlling process for growth of the diffusion zones as volume diffusion. The activation energies for the growth of FeTi?Fe 2 Ti (184 kJ/mol) and bTi(Fe) (157 kJ/mol) phases in the present study are far lower than the reported Q values of 228 and 227 kJ/mol, respectively, in diffusion bonded joints of microduplex steel/cpTi [38]. The reason can be attributed to the presence of large number of lattice defects at the explosive joint interface which aids the diffusion.…”

Section: Discussioncontrasting

confidence: 75%

Effect of alloying elements on interdiffusion phenomena in explosive clads of 304LSS/Ti–5Ta–2Nb alloy

2016

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Dissimilar joints of 304L austenitic stainless steel (SS) and Ti-5Ta-2Nb alloy were fabricated using explosive cladding process with an aim to avoid the formation of brittle intermetallic phases at the interface. Subsequently, diffusion annealing heat treatments were carried out at temperatures in the range of 550-800°C for various durations. In the present study, concentration and temperature dependence of the distinct diffusion zones, formed at the clad interface, due to interdiffusion of the alloying elements, have been established using Electron Probe Micro Analysis and imaging of the interface. Molar volume showed a close match with the ideal Vegard's law at low temperatures while a non-linear negative deviation has been observed at high temperatures (800°C) due to the formation of secondary phases such as FeTi, Fe 2 Ti and bTi(Fe) phases. Interdiffusion parameters evaluated by Wagner's method showed sluggish diffusion kinetics of Fe and Ti at concentration corresponding to a two phase mixture of FeTi and Fe 2 Ti. Further, an attempt has been made to understand multicomponent diffusion using Dayananda's approach and estimation of effective interdiffusion coefficients revealed *22 lm shift of the interface from Matano plane at 800°C.

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Section: Discussioncontrasting

confidence: 75%

Effect of alloying elements on interdiffusion phenomena in explosive clads of 304LSS/Ti–5Ta–2Nb alloy

2016

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“…Several studies were made to join stainless steel and Ti using low thermal input processes as diffusion bonding [2,3] and friction stir welding [4]. In the first study, D. Poddar used diffusion bonding to join commercially pure (CP) titanium to precipitation hardening stainless steel.…”

Section: Welding Process Controlmentioning

confidence: 99%

Dissimilar metal joining of stainless steel and titanium using copper as transition metal

Pardal

Ganguly

Williams

et al. 2016

Int J Adv Manuf Technol

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Joining of stainless steel and titanium dissimilar metal combination has a specific interest in the nuclear industry. Due to the metallurgical incompatibility, it has been very difficult to produce reliable joints between these metals due to the formation of FeTi and Fe 2 Ti types of intermetallic compounds. The metallurgical incompatibility between both materials is enhanced by the time-temperature profile of the welding process used. Brittle intermetallics (IMCs) are formed during FeTi welding (FeTi and Fe 2 Ti). The present study uses the low thermal heat input process cold metal transfer (CMT), when compared with conventional GMAW, to deposit a copper (Cu) bead between Ti and stainless steel. Cu is compatible with Fe, and it has a lower melting point than the two base materials. The welds were produced between AMS 4911L (Ti-6Al-4V) and AISI 316L stainless steel using a CuSi-3 welding wire. The joints produced revealed two IM layers located near the parent metals/weld interfaces. The hardness of these layers is higher than the remainder of the weld bead. Tensile tests were carried out with a maximum strength of 200 MPa, but the interfacial failure could not be avoided. Ti atomic migration was observed during experimental trials; however, the IMC formed are less brittle than FeTi, inducing higher mechanical properties.

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“…However, the mechanical resistance of such joints is limited by the brittleness of CueTi intermetallics. Kundu and Chatterjee [4] report the successful diffusion bonding of titanium with steel through copper interlayer. The strength of the joints was determined by the content of diffusion interfaces between Ti and Cu, which contained various intermetallic phases (CuTi 2 , CuTi, Cu 3 Ti 2 , Cu 4 Ti 3 , FeTi, Fe 2 Ti, Cr 2 Ti, s 2 , s 3 and s 5 ).…”

Section: Introductionmentioning

confidence: 99%

The formation of intermetallics in dissimilar Ti6Al4V/copper/AISI 316 L electron beam and Nd:YAG laser joints

et al. 2011

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Diffusion bonding between commercially pure titanium and micro-duplex stainless steel

Cited by 82 publications

References 18 publications

Effect of alloying elements on interdiffusion phenomena in explosive clads of 304LSS/Ti–5Ta–2Nb alloy

Effect of alloying elements on interdiffusion phenomena in explosive clads of 304LSS/Ti–5Ta–2Nb alloy

Dissimilar metal joining of stainless steel and titanium using copper as transition metal

The formation of intermetallics in dissimilar Ti6Al4V/copper/AISI 316 L electron beam and Nd:YAG laser joints

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