A hybrid joint based on two kinds of bonding mechanisms for Titanium alloy and stainless steel by pulsed laser welding

Zhang, Yan; Sun, Dongbai; Gu, Xiaoyan; Li, Hongmei

doi:10.1016/j.matlet.2016.08.138

Cited by 75 publications

(20 citation statements)

References 9 publications

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“…Recently, by virtue of relatively low cost, lightweight, high corrosion resistance, and appreciable mechanical properties, high-quality joints between titanium alloy and stainless steel have found applications for nuclear fuel field, petrochemical, cryogenic protector, and aerospace industries [1][2][3][4][5][6][7]. Titanium alloys possess low densities, high strengths, and strong heat resistance, enabling them for a wide range of applications in petrochemical, aviation, and space industries [5].…”

Section: Introductionmentioning

confidence: 99%

“…Secondly, metallurgical incompatibilities of them are prone to form brittle intermetallic compounds at a welding pool. For example, according to the TiFe binary phase diagram, the solid solubility of Fe in Ti is less than 0.1 at.%, and thus TiFe and TiFe 2 phases are formed at the bonded joints where cracks are liable to emerge and propagate spontaneously [6,[11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

“…In order to solve these problems, many welding methods have been practiced to investigate the joining between titanium alloys and stainless steels, mainly including brazing welding [7,[16][17][18][19][20], laser welding [2,5,6,[21][22][23][24][25], electronbeam welding [26][27][28][29][30][31], diffusion bonding [32][33][34][35][36], explosive welding [37][38][39][40], and friction stir welding [41][42][43][44][45][46][47]. Cu-based and Ag-based fillers were usually used to braze titanium/steel joints, while scattered brittle intermetallics, such as (Fe,Cu)Ti, Cu 4 Ti 3 , and CuTi [20,48] and Cu 4 Ti and CuTi 2 [7], were induced to the interfaces which were detrimental to the mechanical properties of the joints, and maximum possible tensile strength of the joints was found to be no more than 200 MPa [16][17][18][19][20]…”

Section: Introductionmentioning

confidence: 99%

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A Review on Diffusion Bonding between Titanium Alloys and Stainless Steels

Song

Fang

et al. 2018

Advances in Materials Science and Engineering

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High-quality joints between titanium alloys and stainless steels have found applications for nuclear, petrochemical, cryogenic, and aerospace industries due to their relatively low cost, lightweight, high corrosion resistance, and appreciable mechanical properties.is article reviews diffusion bonding between titanium alloys and stainless steels with or without interlayers. For diffusion bonding of a titanium alloy and a stainless steel without an interlayer, the optimized temperature is in the range of 800-950°C for a period of 60-120 min. Sound joint can be obtained, but brittle FeTi and Fe-Cr-Ti phases are formed at the interface. e development process of a joint mainly includes three steps: matching surface closure, growth of brittle intermetallic compounds, and formation of the Kirkendall voids. Growth kinetics of interfacial phases needs further clarification in terms of growth velocity of the reacting layer, moving speed of the phase interface, and the order for a new phase appears. e influence of Cu, Ni (or nickel alloy), and Ag interlayers on the microstructures and mechanical properties of the joints is systematically summarized. e content of FeTi and Fe-Cr-Ti phases at the interface can be declined significantly by the addition of an interlayer. Application of multi-interlayer well prevents the formation of intermetallic phases by forming solid solution at the interface, and parameters can be predicted by using a parabolic diffusion law. e selection of multi-interlayer was done based on two principles: no formation of brittle intermetallic phases and transitional physical properties between titanium alloy and stainless steel.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Review on Diffusion Bonding between Titanium Alloys and Stainless Steels

Song

Fang

et al. 2018

Advances in Materials Science and Engineering

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“…1 , Мичуров Н. С. 1 1 ФГБУН Институт машиноведения УрО РАН, ул. Комсомольская, 34, Екатеринбург, 620049, Россия 2 УрИ ГПС МЧС РФ, ул.…”

Section: лазерное сварное соединение титанового сплава вт1-0 и стали unclassified

The laser-welded joint of an austenitic corrosion-resistant steel and a titanium alloy with an intermediate copper insert

Veretennikova¹,

Пугачева²,

Smirnova³

et al. 2018

LoM

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The microstructure and local mechanical properties of zones of 12Cr18Ni10Ti steel and a titanium alloy VT1-0 with an intermediate copper insert joint were carried out. The study was performed using electronic scanning microscopy, microindentation and scratch tests. The phase composition was determined by the EBSD analysis. Dissolution and mixing of welded materials in a copper are observed. The material of joint is a supersaturated solid solution of Fe, Ni, Cr, Ti in the copper crystal lattice with uniformly distributed particles of TiFe, Ti(Fe,Cr) 2 , and CuTi 2. A diffusion zones with a changed chemical composition 10 ÷ 150 μm thick and a microhardness of 2,9 ÷ 3,4 GPa are formed on the boundary with steel, and at a boundary with a titanium alloy-50 ÷ 100 μm thick and the microhardness of 4,6 ÷ 6 GPa. The microhardness of steel is 2,7 ÷ 3,1 GPa, titanium alloy-2,4 ÷ 2,8 GPa, solid solution based on copper-1,7 ÷ 2,1 GPa, intermetallides-3,8 ÷ 4,9 GPa. The stress-strain diagrams for zones of the joint are received using the original technique for determining coefficients of the "stress-strain" diagram by microindentation and scratch tests. The diffusion zone on the boundary with titanium is greater strength. There is established the formation of a solid solution based on β-titanium and dispersed particles of CuTi 2 and then-intermetallides of Ti(Fe,Cr) 2. The obtained data can be used to estimate stress-strain state, strength and efficiency of the joint under load and to give recommendations for practical.

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“…12 The addition of some trace elements in powder materials can also affect the mechanical properties. [13][14][15] In addition to these problems, laser remanufacturing also faces a problem of interface bonding between deposition and substrate. The bonding interface of heterogeneous materials is considered to be the weak position of the composites.…”

Section: Introductionmentioning

confidence: 99%