Microstructure and Mechanical Properties of 6063 Aluminum Alloy Brazed Joints with Al-Si-Cu-Ni-RE Filler Metal

2011 ◽  
Vol 20 (8) ◽  
pp. 1451-1456 ◽  
Author(s):  
Guowei Zhang ◽  
Yefeng Bao ◽  
Yongfeng Jiang ◽  
Hong Zhu
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Filler Metal ◽  
Microstructure And Mechanical Properties ◽  
Brazed Joints ◽  
6063 Aluminum Alloy

scholarly journals A new modifier for microstructure and mechanical properties of 6063 aluminum alloy

2020 ◽  
Vol 7 (10) ◽  
pp. 106522
Author(s):  
Wanwu Ding ◽  
Xiaoxiong Liu ◽  
Xiaoyan Zhao ◽  
Taili Chen ◽  
Haixia Zhang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Microstructure And Mechanical Properties ◽  
6063 Aluminum Alloy

Microstructure and Mechanical Properties of Brazed Joints Used in Electronic Devices

2014 ◽  
Vol 936 ◽  
pp. 1671-1675
Author(s):  
Xue Rui Wu ◽  
Wen Qing Qu ◽  
Hai Tao Li
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Grain Boundary ◽  
Tensile Test ◽  
Filler Metal ◽  
Electronic Devices ◽  
Nickel Content ◽  
Microstructure And Mechanical Properties ◽  
Brazed Joints ◽  
Content Alloy

The microstructure and mechanical properties of brazed joints of oxygen-free copper and oxygen-free copper, nickel-plated kovar, monel, nickel-plated stainless steel were respectively studied by using AgCu28 and AuCu20 filler metal. Effects of different filler metal on microstructure of the brazed joints were analyzed through metallurgical microscope, SEM, EPMA. The brazed joints tensile strengths were analyzed through tensile test. The results indicate that the brazing process of oxygen-free copper and nickel content alloy used AgCu28 filler metal, nickel element is easy to diffused into AgCu28, AgCu28 filler metal with nickel element wetting spreadability along grain boundary of the oxygen - free copper, resulting in the penetration of the grain boundary of the oxygen-free copper. The joints brazed by AuCu20 filler metal have the better performance than the joints brazed by AgCu28 filler metal.

Structure and Stresses of Large Size Brazed Joints of Cermets and Steel

2012 ◽  
Vol 445 ◽  
pp. 783-788
Author(s):  
Jerzy Nowacki
Keyword(s):  
Mechanical Properties ◽  
Filler Metal ◽  
Constant Width ◽  
Fem Analysis ◽  
Local Stress ◽  
Metal Structure ◽  
Joint Geometry ◽  
Microstructure And Mechanical Properties ◽  
Brazed Joints

Stresses in brazing joints of different differed in properties were appraised as a result of technological experiments and FEM analysis. Evaluation of microstructure and mechanical properties of large dimensional vacuum brazed joints of Ferro Titanit Nicro 128 sinters and precipitation hardened stainless steel of X5CrNiMoCuNb14-5 using copper as the brazing filler metal. Structure of the joint was described. Shear strength Rt and tensile strength Rm of the joints have been defined. It have been state, that the basic factors decreasing quality of the joint, which can occur during vacuum brazing of the Ferro Titanit Nicro 128 sinter Cu brazing filler metal steel joints are diffusive processes leading to exchange of the cermets and brazing filler metal elements and creation of intermetallic in the joint. It can have an unfavourable influence on ductility and quality of the joint. The effect of joint geometry structure on stresses and deformations as well as on the process of plate cracking has been determined. Results of numerical calculations of three-dimensional models of brazed joints for different sizes of surfaces brazed at a constant width of solder gap are presented. Results of the investigate proved that joints microstructure and mechanical properties depend on filler and parent materials, diffusion process during brazing, leading to exchange of the cermets components and filler metal as well as joint geometry. The thickness of the joints has an essential influence on the values of the local stress and the significant influence on the joint rigidity. In a case of the considered joints the values of the local stress differences have been considerable in dependence of a fixed load manner.

scholarly journals Comparison of Microstructure and Mechanical Properties of Induction and Vacuume Brazed Joint of Titanium Via Copper and Ag-Cu Eutectic Filler Metal / Mikrostruktura I Właściwości Mechaniczne Połączeń Tytanu Lutowanych Indukcyjnie I Próżniowo Z Użyciem Spoiwa Miedzianego I Eutektycznego Ag-Cu

2015 ◽  
Vol 60 (4) ◽  
pp. 2593-2598 ◽  
Author(s):  
M. Różański ◽  
D. Majewski ◽  
K. Krasnowski
Keyword(s):  
Mechanical Properties ◽  
Filler Metal ◽  
Chemical Properties ◽  
Metallographic Examination ◽  
Air Atmosphere ◽  
Microstructure And Mechanical Properties ◽  
Physico Chemical ◽  
Brazed Joints ◽  
Brazed Joint

This study presents the basic physico-chemical properties and describes the brazeability of titanium. The work contains the results of macro and microscopic metallographic examination as well as the results of strength-related tests of vacuum and induction brazed joints made of Grade 2 technical titanium using the Cu 0.99 and Ag 272 filler metal interlayers and F60T flux intended for titanium brazing in the air atmosphere.

Effect of rare earth Y and Al–Ti–B master alloy on the microstructure and mechanical properties of 6063 aluminum alloy

2020 ◽  
Vol 830 ◽  
pp. 154685 ◽  
Author(s):  
Wanwu Ding ◽  
Xiaoyan Zhao ◽  
Taili Chen ◽  
Haixia Zhang ◽  
Xiaoxiong Liu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Rare Earth ◽  
Master Alloy ◽  
Microstructure And Mechanical Properties ◽  
6063 Aluminum Alloy

scholarly journals Effect of Various Nanoparticles (GaF3, ZnF2, Zn(BF4)2 and Ga2O3) Additions on the Activity of CsF-RbF-AlF3 Flux and Mechanical Behavior of Al/Steel Brazed Joints

Crystals ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 683 ◽  
Author(s):  
Zhen Yao ◽  
Songbai Xue ◽  
Junxiong Zhang
Keyword(s):  
Mechanical Properties ◽  
Shear Strength ◽  
Aluminum Alloy ◽  
Interfacial Tension ◽  
Filler Metal ◽  
Spreading Area ◽  
Comparative Tests ◽  
Brazed Joints ◽  
In Virtue Of ◽  
Maximum Spreading

In this study, brazing AA6061 to Q235 steel using flame brazing was performed with 70.9 wt.% CsF-0.5 wt.% RbF-28.6 wt.% AlF3 fluxes doped with GaF3, ZnF2, Zn(BF4)2 and Ga2O3 nanoparticles, matched with a Zn-15Al filler metal, and the spreadability of the filler metal and the mechanical properties of brazed joints were investigated at the same time. The results showed suitable amounts of GaF3, ZnF2, Zn(BF4)2 and Ga2O3 doped into the base flux could strengthen the filler metal in wetting and spreading on the surface of aluminum alloy and steel to different degrees. The suitable ranges of GaF3, ZnF2, Zn(BF4)2 and Ga2O3, respectively, were 0.0075–0.01 wt.%, 0.0075–0.01 wt.%, 0.0075–0.01 wt.% and 0.009–0.01 wt.%, and the maximum spreading area was obtained via doping with GaF3. The shear strength of brazed joints reached the peak at 126 MPa when 0.075 wt.% GaF3 was added. Comparative tests proved that the activity of the CsF-RbF-AlF3 flux doped with GaF3 was the best. The reason was that the CsF-RbF-AlF3-GaF3 flux was competent in removing oxides of the base metal and decreasing the interfacial tension, in virtue of the activity of Ga3+ as well as F−.

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