Microstructure, residual stresses and shear strength of diamond–steel-joints brazed with a Cu–Sn-based active filler alloy

2012 ◽  
Vol 30 (1) ◽  
pp. 16-24 ◽  
Author(s):  
Sebastian Buhl ◽  
Christian Leinenbach ◽  
Ralph Spolenak ◽  
Konrad Wegener
Keyword(s):  
Shear Strength ◽  
Residual Stresses ◽  
Filler Alloy ◽  
Active Filler ◽  
Steel Joints

scholarly journals The effect of a homogenizing optic on residual stresses and shear strength of laser brazed ceramic/steel-joints

2011 ◽  
Author(s):  
I. Südmeyer ◽  
M. Rohde ◽  
H. Besser ◽  
M. Grein ◽  
B. Liesching ◽  
...  
Keyword(s):  
Shear Strength ◽  
Residual Stresses ◽  
Steel Joints

scholarly journals Residual stresses in thin-sheet galvanized steel joints after arc welding and plasma brazing

2020 ◽  
Vol 2020 (9) ◽  
pp. 31-35
Author(s):  
S.V. Maksymova ◽  
◽  
I.V. Zvolinskyy ◽  
V.V. Yurkiv ◽  
S.M. Minakov ◽  
...  
Keyword(s):  
Residual Stresses ◽  
Arc Welding ◽  
Thin Sheet ◽  
Galvanized Steel ◽  
Steel Joints

Evaluation of Residual Stresses in Butt Welded Joint of Dissimilar Material by FEM

2017 ◽  
Vol 754 ◽  
pp. 268-271 ◽  
Author(s):  
Raffaele Sepe ◽  
M. Laiso ◽  
A. de Luca ◽  
Francesco Caputo
Keyword(s):  
Finite Element ◽  
Residual Stresses ◽  
Arc Welding ◽  
Structural Integrity ◽  
Welded Joint ◽  
Dissimilar Material ◽  
Fe Model ◽  
Butt Joints ◽  
Integrity Assessment ◽  
Steel Joints

The study proposed within this paper deals with an application of finite element techniques to the thermo-structural analysis of a dissimilar butt-welded joint. Residual stresses induced by the fusion arc-welding of steel joints in power generation plants are a concern to the industry. Nowadays, the application of finite element method appears to be a very efficient method for the prediction and the investigation of the weld-induced residual stresses, nevertheless the detailed modelling of all phenomena involved in such process is still challenging. The structural integrity assessment of welded structures strongly requires a deep investigation of weld-induced residual stresses in order to be compliant with safety requirement of power plant. The longitudinal and transversal residual stresses in dissimilar material butt joints of 8 mm thick for V-groove shape were studied. The developed thermo-mechanical FE model as well as the simulation procedures are detailed and results are discussed. As a result of such work, it has been found out that residual stresses in the two dissimilar plates are characterized by very different magnitudes and distribution.

Effect of Adhesive Layer Thickness on the Shear Strength of Adhesively Bonded Steel Joints in Wet Environment

2016 ◽  
Vol 836 ◽  
pp. 78-82 ◽  
Author(s):  
Sugiman ◽  
Ilham Akbar ◽  
Emmy Dyah Sulistyowati ◽  
Paryanto Dwi Setyawan
Keyword(s):  
Mechanical Properties ◽  
Shear Strength ◽  
Adhesive Layer ◽  
Static Strength ◽  
Adhesive Joints ◽  
Deionized Water ◽  
Adhesively Bonded ◽  
Moist Environment ◽  
Adhesive Thickness ◽  
Steel Joints

The paper presents the static strength of adhesively bonded steel joints aged in deionized water at a temperature of 60°C for 15 days at various adhesive thicknesses from 0.1 mm to 0.5 mm. Water uptake and the bulk adhesive tensile properties after aged in the same environment as the joints were also presented. It has been shown that water diffusion into the adhesive is non Fickian. The absorbed water in the adhesive significantly decreases the mechanical properties and it affects the static strength of the bonded steel joints. The effect of water is shown to be significant when the adhesive thickness is thicker than 0.2 mm as the static strength decreases sharply. This information is useful when designing the adhesive joints using thick adhesive layer exposed in moist environment.

Selection and Design of Brazing Fillers for Metal-Ceramic Joints

2007 ◽  
Vol 539-543 ◽  
pp. 4008-4012 ◽  
Author(s):  
Vinzenz Bissig ◽  
Jolanta Janczak-Rusch ◽  
Matteo Galli
Keyword(s):  
Residual Stresses ◽  
Filler Metal ◽  
Single Layer ◽  
Dissimilar Materials ◽  
Processing Temperature ◽  
Bend Strength ◽  
Key Factors ◽  
Brazing Fillers ◽  
Active Filler ◽  
Selection Of

Three different approaches for metal to ceramic brazing are compared using the example of Si3N4/TiN-steel joints: the use of an active filler metal (single layer brazing system), the metallisation of the ceramic and brazing with a non active filler (two-layer brazing system), the use of a composite brazing filler system (three layer brazing system). Different aspects are analysed: the development of the joint’s microstructure in the as-brazed state, the thermally induced residual stresses and the resulting bend strength of the joint’s strength. With two layers and three layers brazing system, bend strength of about 400 MPa, about 15% higher then single filler metal, were achieved. The three layer brazing system has two advantages: firstly one step processing secondly lower scattering of joint bend strength compared to two layers brazing system. The key factors in all cases are the selection of the brazing fillers and the braze design. In all cases a careful selection of the brazing fillers and the braze design are the key factors. The first criteria for the selection of the brazing fillers for joints of dissimilar materials can be done by considering only the main filler characteristics like titanium content, processing temperature and yield stress. It’s necessary to simulate the joint behaviour by finite element simulation for verifying the final selection of filler metals. It was clearly seen that the plasticity of the filler metal is the main factor affecting residual stresses for the joint geometry in this current work.

Microstructure and bonding strength of titanium-to-stainless steel joints brazed using a Zr–Ti–Ni–Cu–Be amorphous filler alloy

2010 ◽  
Vol 45 (24) ◽  
pp. 6837-6840 ◽  
Author(s):  
Jung G. Lee ◽  
J. K. Lee ◽  
S. M. Hong ◽  
M. K. Lee ◽  
C. K. Rhee
Keyword(s):  
Stainless Steel ◽  
Bonding Strength ◽  
Filler Alloy ◽  
Steel Joints

Model's Calibration for Masonry Reinforced with FRP Mesh-Bars

2014 ◽  
Vol 919-921 ◽  
pp. 421-425
Author(s):  
Alessandra Dal Cin
Keyword(s):  
Shear Strength ◽  
Polymer Material ◽  
Shear Reinforcement ◽  
Reinforced Polymer ◽  
Masonry Material ◽  
Fibre Reinforced Polymer ◽  
Steel Joints

The paper presents some considerations on the reliability of the available formulas to determine the shear strength of masonry reinforced with FRP (fibre reinforced polymer) material. In detail the outcomes of a model related to the Eurocode 6 is prepared in presence of not usual shear reinforcement as FRP mesh bars jointed to ten surface masonry through steel joints. The model considers the basic contribution due to the masonry material and then add the contribution related to the presence of a material as carbon bars that is characterized by higher behaviour in term of stiffness.

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