scholarly journals Investigation of the Solid-Phase Joint of VT-14 Titanium Alloy with 12KH18N10T Stainless Steel Obtained by Diffusion Welding through Intermediate Layers

Metals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1325
Author(s):  
Alexander Viktorovich Lavrishchev ◽  
Sergei Viktorovich Prokopev ◽  
Vadim Sergeevich Tynchenko ◽  
Aleksander Vladimirovich Myrugin ◽  
Vladislav Viktorovich Kukartsev ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Titanium Alloy ◽  
High Pressures ◽  
Solid Phase ◽  
Dissimilar Materials ◽  
Mechanical Tests ◽  
Diffusion Welding ◽  
Welding Temperature ◽  
Intermediate Layers ◽  
Welding Pressure

This paper describes the technological process of manufacturing bimetallic billets, which are capable of operating at high pressures, high temperatures, and in corrosive environments, from VT-14 titanium alloy and 12KH18N10T stainless steel. To obtain a joint with a strength of at least 350 MPa, the diffusion welding method was used, which makes it possible to obtain equal-strength joints using dissimilar materials. The connection of VT-14 titanium alloy with 12KH18N10T stainless steel after obtaining bimetallic billets with the desired properties was investigated. We studied the welded VT-14 and 12KH18N10T joint obtained by diffusion welding through intermediate spacers of niobium Nb (NbStrip-1) and copper Cu (M1). On the basis of our investigations, the optimum welding modes are as follows: welding temperature: 1137 K; welding pressure: 18 MPa; welding time: 1200 s. Mechanical tests, tightness tests, and metallographic, factographic, and micro-X-ray structural studies were carried out, the results of which indicate the effectiveness of the proposed approach.

Dissimilar Materials Laser Welding Characteristics of Stainless Steel and Titanium Alloy

2013 ◽  
Vol 465-466 ◽  
pp. 1060-1064 ◽  
Author(s):  
Zazuli Mohid ◽  
M.A. Liman ◽  
M.R.A. Rahman ◽  
N.H. Rafai ◽  
Erween Abdul Rahim
Keyword(s):  
Thermal Conductivity ◽  
Stainless Steel ◽  
Titanium Alloy ◽  
Thermal Properties ◽  
Material Properties ◽  
Dissimilar Materials ◽  
Scanning Speed ◽  
Welding Parameters ◽  
Melting Region ◽  
Offset Distance

Welding parameters are directly influenced by the work material properties. Thermal properties such as thermal conductivity and melting point are very important to estimate the range of power required and the allowable scanning speed. However, when two or more different materials are involved, modifying lasing parameters are not enough to counter the problems such as imbalance melting region and weak adhesion of contact surface. To counter this problem, the characteristics of welding beads formation for both materials need to be clarified. In this study, comparison of welding beads constructed using the same scanning parameters were done to understand the different and similarity of melted region for the both materials. Actual welding of the both materials were done under different offset distance to obtain a balanced melting area and well mixed melting region.

Reconstruction of Regression Relationships for Determination of Strength Values for Alloys of Products in Diffusion Welding

2022 ◽  
Vol 1049 ◽  
pp. 75-84
Author(s):  
Sergei Kurashkin ◽  
Daria Rogova ◽  
Alexander Lavrishchev ◽  
Vadim Sergeevich Tynchenko ◽  
Alexander Murygin
Keyword(s):  
Missing Values ◽  
Field Experiments ◽  
Applied Pressure ◽  
Mechanical Tests ◽  
Second Order ◽  
Strength Parameter ◽  
Diffusion Welding ◽  
Welding Temperature ◽  
Temperature And Pressure

The article deals with the problem of obtaining the dependence of the product strength parameter on the welding time, welding temperature and pressure during mechanical tests, leak tests. The relevance of this work is due to the complexity of carrying out field experiments to identify dependencies. In particular, the complexity arises from the duration of diffusion welding and the high cost. Application of the method of regression analysis based on a non-compositional plan of the second order for three factors will allow to restore the dependence of the product strength parameter on the time during which welding was carried out, the temperature at which diffusion welding was carried out or could be carried out and on the applied pressure at which mechanical tests were carried out. In the current study, a non-compositional design of the second order for three factors was used - allowing to restore the dependence of the missing values of the strength of the product. The aim of the research is to improve the quality of mathematical modeling. Application of the proposed approach will make it possible to obtain the strength distribution function depending on time, temperature and pressure using the example of a product made of VT14 titanium alloy and 12X18H10T stainless steel. This will make it possible to obtain optimal parameters for the diffusion welding mode and to improve the quality of the resulting products.

An Evaluation of Beta Titanium Alloys for Use in Orthodontic Appliances

1979 ◽  
Vol 58 (2) ◽  
pp. 593-599 ◽  
Author(s):  
Jon Goldberg ◽  
Charles J. Burstone
Keyword(s):  
Stainless Steel ◽  
Titanium Alloy ◽  
Titanium Alloys ◽  
Mechanical Tests ◽  
Orthodontic Appliances ◽  
Beta Titanium Alloy ◽  
Reduction In Force ◽  
Beta Titanium ◽  
Fold Reduction ◽  
Beta Titanium Alloys

A beta titanium alloy was evaluated for use in orthodontic appliances. Standard mechanical tests and a specially designed spring test were used. Two particular thermo-mechanical treatments resulted in titanium springs with 1.8 times the extension of comparable stainless steel springs, and a 2.2 fold reduction in force per unit displacement.

scholarly journals Joining of SiO2 glass and 316L stainless steel using Bi–Ag-based active solders

2020 ◽  
Vol 56 (4) ◽  
pp. 3444-3454
Author(s):  
Felix Weber ◽  
Markus Rettenmayr
Keyword(s):  
Stainless Steel ◽  
Cross Sections ◽  
316L Stainless Steel ◽  
Dissimilar Materials ◽  
Intermetallic Phases ◽  
Reaction Products ◽  
Cast State ◽  
Metallic Component ◽  
X Ray ◽  
Solder Interface

Abstract Active brazing is a commonly used method for joining dissimilar materials with at least one non-metallic component. In the present study, joining of SiO2 glass to 316L stainless steel was performed utilizing Bi–Ag-based solders. Ti up to a concentration of 4 and Mg up to 1 wt.% were added as active elements. Microstructures of the solder alloys in the as-cast state and of cross sections of the joined compounds were analysed using scanning electron microscopy and energy-dispersive X-ray spectroscopy. In the as-cast state of the solder, Ti is found in Bi–Ti intermetallic phases; Mg is partially dissolved in the fcc-(Ag) phase and additionally contained in a ternary Ag-Bi-Mg phase. After soldering, a tight joint was generated using several alloy compositions. Ti leads to the formation of reaction products at the steel/solder and glass/solder interfaces, and Mg is exclusively accumulated at the glass/solder interface.

Study on Recast Phenomenon in Processing of Micro-Hole with Millisecond Laser

2012 ◽  
Vol 459 ◽  
pp. 315-319 ◽  
Author(s):  
Ke Dian Wang ◽  
Wen Qiang Duan ◽  
Xue Song Mei ◽  
Wen Jun Wang
Keyword(s):  
Stainless Steel ◽  
Titanium Alloy ◽  
Pulse Width ◽  
Peak Power ◽  
Recast Layer ◽  
Hole Depth ◽  
Maximum Peak ◽  
Blind Hole ◽  
Micro Hole ◽  
Millisecond Laser

The experiments of micro-hole ablation are conducted firstly on titanium alloy Ti-6Al-4V with Nd: YAG millisecond laser. A significant factor which affects the depth of blind hole is found: the depth of recast material. This paper closely examines the regularity of recast depth varying with laser parameters, discovering that the ratio of recast depth to the entire hole depth decreases as pulse width decreases, and increases as peak power decreases. Verification experiment is conducted on stainless steel 1Cr13, eventually micro-hole with very thin recast layer is drilled when the maximum peak power and the minimum pulse width of the present millisecond laser are used.

Joining of Carbon Fibre Reinforced SiC (Cf/SiC) to Ni-Based Superalloy with Multiple Interlayers

2003 ◽  
Vol 17 (08n09) ◽  
pp. 1777-1781 ◽  
Author(s):  
Shujie Li ◽  
Jianjun Zhang ◽  
Xiaobo Liang ◽  
Huiping Duan ◽  
Yan Zhang
Keyword(s):  
Carbon Fibre ◽  
Dwell Time ◽  
Bending Strength ◽  
Welding Temperature ◽  
Maximum Value ◽  
Welding Pressure ◽  
Metallic Filler ◽  
Microstructural Studies

Welding of C f / SiC to Ni-based superalloy has been realized using Cu/W/Cu/W/Cu multiple interlayers. The bending strength of the joints has been improved by using the active metallic filler contacted with C f / SiC . The strength of the joints is remarkably affected by the welding temperature. The maximum value 102.1 MPa has been obtained at 970°C (dwell time: 10 min., welding pressure: 34.3 MPa). Microstructural studies were also conducted.

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