Diffusion bonding of titanium to 304 stainless steel

Ghosh, Manojit; Bhanumurthy, K.; Kale, G.B.; Krishnan, J.; Chatterjee, S.

doi:10.1016/j.jnucmat.2003.07.004

Cited by 157 publications

(79 citation statements)

References 24 publications

(25 reference statements)

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“…11,16) With a further rise in bonding temperature to 950°C and above, the coalescence of mating surfaces increases. However, Fe 2 NbϩFe 7 Nb 6 intermetallics phase mixture is formed at the SS-Nb interface and their thickness increases with the increase in bonding temperature.…”

Section: Mechanical Properties Of the Diffusion Bondedmentioning

confidence: 99%

Evolution of Interface Microstructure and Mechanical Properties of Titanium/304 Stainless Steel Diffusion Bonded Joint Using Nb Interlayer

Kundu

Chatterjee

2010

ISIJ Int.

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In the present investigation, the evolution of interface microstructure and mechanical properties of diffusion bonded joints of titanium to Type 304 stainless steel with a niobium interlayer were studied. The joints were processed in the temperature range of 800 to 1 000°C for 0.5 h in vacuum. The stainless steel/niobium interface was free from intermetallic phase up to 900°C; however, Fe 2 NbϩFe 7 Nb 6 phase mixture was observed at and above a processing temperature of 950°C. The niobium/titanium interface was free from intermetallic compounds at all processing temperatures. A maximum tensile strength of 297 MPa (ϳ93 % of Ti) and shear strength of 217 MPa (ϳ75 % of Ti) along with a 6.9 % ductility were achieved, when processed at 900°C processing temperature. The failure of bonded samples took place through the stainless steel-niobium interface at all processing temperatures during loading.KEY WORDS: diffusion bonding; niobium interlayer; electron probe microanalyser; scanning electron microscope; X-ray diffraction.

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Section: Mechanical Properties Of the Diffusion Bondedmentioning

confidence: 99%

Evolution of Interface Microstructure and Mechanical Properties of Titanium/304 Stainless Steel Diffusion Bonded Joint Using Nb Interlayer

Kundu

Chatterjee

2010

ISIJ Int.

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“…18) Ghosh et al inferred that diffusion bonded joints of titanium to stainless steel contains s phase, c phase, Fe 2 Ti, FeTi and Cr 2 Ti intermetallic compounds in the diffusion zone when processed at 850°C. 19) In present work, because of bonding temperature at 650-750°C, the energy is low and intermetallic compounds of Fe, Ti, Cr can not be yielded during diffusion bonding of Ti-4Al-2V and 0Cr18Ni9Ti (as shown in Fig. 7).…”

Section: Discussionmentioning

confidence: 73%

Pulse Pressuring Diffusion Bonding of Ti Alloy/Austenite Stainless Steel Processed by Surface Self-nanocrystallization

et al. 2009

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Nanostructured surface layers were synthesized on the end face of Ti-4Al-2V titanium alloy and 0Cr18Ni9Ti austenite stainless steel rods by means of high energy shot peening (HESP). Making treated end surfaces as bonding interfaces, Ti-4Al-2V and 0Cr18Ni9Ti rods were bonded by pulse pressuring diffusion bonding (PPDB) on Gleeble-1500D tester at 650-750°C. Joints were tested on tensile testing machine, the fractures and microstructures of joints were researched. Results showed that the maximum tension strength of 262.0 MPa was achieved, cleavage fracture took place while tension test of joints, and the grains in the vicinity of the diffusion layer are fined. But, brittle intermetallic compounds were absence on the bonding interface.KEY WORDS: titanium alloy; stainless steel; pulse pressuring diffusion bonding (PPDB); intermetallic compound.

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“…[3][4][5][6][7][8][9] A higher joints strength of friction welded Ti/AISI 321 could be explained by the narrower reaction layer within 0.2 mm, which enhanced the joinability of friction welded Ti/AISI 321 stainless steel.…”

Section: Resultsmentioning

confidence: 99%

“…Although sound joints between Ti and stainless steel were successfully achieved using diffusion bonding method, [3][4][5][6][7][8] the brittle intermetallic compounds for example, Fe 2 Ti, FeTi and Fe 2 Ti 4 O, were widely formed in the interface. The diffusion bonded joints represented a lower strength than those of the base metals due to thicker intermetallic compounds.…”

Section: Introductionmentioning

confidence: 99%

Effect of Microstructure on Mechanical Properties of Friction-Welded Joints between Ti and AISI 321 Stainless Steel

Lee

Jung

2004

Mater. Trans.

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The microstructures and mechanical properties of the friction welded pure Ti/AISI 321 stainless steel have been investigated. From the Ti side from the interface to the Ti base metal, the sequence of recrystallized grain, elongated grain and many twin embedded grain structures were observed. The reaction layers were formed within 0.2 mm thickness at the interface under the conditions of relatively longer friction time (t 1 ) and lower upset pressure (P 2 ). These reaction layers formed at the central interface were identified as (Fe, Cr) 2 Ti, FeTi 2 or Fe 2 Ti 4 O and -Ti, while those of the peripheral interface were identified as FeCr ( phase), (Fe, Cr) 2 Ti, FeTi and -Ti. The phase was restrictedly formed at the peripheral interface. Higher mechanical properties were acquired under higher upset pressure condition due to higher compressive force between bonded materials, smaller grain size and narrower thickness of reaction layer. Therefore, maximum ultimate tensile strength of these joints was approximately 420 MPa with the conditions of 400 MPa of P 2 and 0.5 s of t 1 .

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Diffusion bonding of titanium to 304 stainless steel

Cited by 157 publications

References 24 publications

Evolution of Interface Microstructure and Mechanical Properties of Titanium/304 Stainless Steel Diffusion Bonded Joint Using Nb Interlayer

Evolution of Interface Microstructure and Mechanical Properties of Titanium/304 Stainless Steel Diffusion Bonded Joint Using Nb Interlayer

Pulse Pressuring Diffusion Bonding of Ti Alloy/Austenite Stainless Steel Processed by Surface Self-nanocrystallization

Effect of Microstructure on Mechanical Properties of Friction-Welded Joints between Ti and AISI 321 Stainless Steel

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