List of Articles TLP

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  1 - An Investigation on the Modeling of Heat Distribution and Atomic Diffusion in the Joining of the AA2024-T4 to AA6061-T6 by TLP Process
  Anbarzadeh A Sabet H Geranmayeh A. R
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  2 - Transient liquid phase (TLP) bonding of AISI321 stainless steel using MBF-20 commercial interlayer
  محمد علی میثاقی رضا بختیاری
  According to the industry’s need to an appropriate bonding process for components made of AISI 321 austenitic stainless steel, which is used in power-plant parts such as turbines, transient liquid phase (TLP) bonding of AISI 321 steel using  MBF-20 interlayer More

  According to the industry’s need to an appropriate bonding process for components made of AISI 321 austenitic stainless steel, which is used in power-plant parts such as turbines, transient liquid phase (TLP) bonding of AISI 321 steel using  MBF-20 interlayer was studied in this research. TLP bonding was performed in a vacuum furnace at 1050, 1100, 1150 and 1200oC for 30-120 minutes. The microstructural studies were conducted on the joints using an optical microscope and an scanning electron microscope (SEM). Phase analysis of the joints was also performed a SEM/EDS and XRD system. To investigate the distribution of elements across the joints, line scan analysis was used. The shear strength test and the micro hardness measurement test were conducted on the joints, in order to study the joints’ mechanical properties. The minimum time of complete isothermal solidification at 1050, 1100 and 1150oC was obtained as 75, 45 and 30 minutes, respectively. At the incomplete isothermal solidification condition, Fe-B, Cr-B, Ni-Si and Ni-B phases were observed at the joint centerline and diffusion affected zone (DAZ). With increasing bonding temperature and time, more homogenous joint, lower hardness at the different zones of the joints and higher shear strength were obtained. But for the joints made at 1200oC, higher than the critical bonding temperature, the joint shear strength was reduced. For the joints made at 1150oC for 60 minutes and also at 1050oC for 120 minutes, the maximum shear strength was obtained as 95 and 94 percent of that of the base metal, respectively. Manuscript profile
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  3 - The effect of homogenization on the microstructure and mechanical properties of transient liquid phase bonding between Inconel 718 and Inconel 600
  ali khorram Akbar Davoodi Jamaloei Abed عابد
  In this paper, the effect of homogenization on the microstructure and mechanical properties of transient liquid phase bonding between Inconel 718 and Inconel 600 using BNi-2 interlayer was investigated. The homogenization was performed on the bonded samples at 1050° More

  In this paper, the effect of homogenization on the microstructure and mechanical properties of transient liquid phase bonding between Inconel 718 and Inconel 600 using BNi-2 interlayer was investigated. The homogenization was performed on the bonded samples at 1050°C for 45 min which have not any eutectic compounds. The homogenization was done at 1080°C for 6 hr and 12 hr and 1180°C for 1 hr,2 hr, and 3 hr. The results indicated that at the temperature of 1080°C for 12 hr, compounds of DAZ on Inconel 718 side were almost completely vanished. On the other hand, the homogenization was completed at 1180°C for 3 hr and any boride compounds was not observed in the DAZ of Inconel 718 and Inconel 600 alloys. When homogenization was complete, the hardness value of DAZ was decreased and this value equated to the hardness value of base metals. The results of bonding shear strength showed that the joint strength was significantly increased with elimination of the diffusion effected zones. Manuscript profile
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  4 - Fabrication and characterization of ribbon and powder of amorphous alloy MBF-100 used in super alloy FSX- 414 TLP bonding
  Mohamad Rajabi رضا بختیاری
  In this research, the process of TLP joint for super alloy FSX-414 by using the interface layer of MBF-100 as ribbon or powder have been studied. For this purpose, two samples of cobalt base alloy super clubs FSX-414 with dimensions of 10  mm for connecting sample More

  In this research, the process of TLP joint for super alloy FSX-414 by using the interface layer of MBF-100 as ribbon or powder have been studied. For this purpose, two samples of cobalt base alloy super clubs FSX-414 with dimensions of 10  mm for connecting sample with MBF ribbon & the other with the same dimensions with U&V shape track for connecting with powder have been done. In the following, both samples were subjected to a heat treatment cycle at temperature of 1175 degree of centigrade for 30 minutes’ microstructure of TLP connection area was investigated by using light microscope, scanning electronical microscope & EDS analysis, EDS map analysis & micro hardness. In microscopic pictures related to TLP bonding with ribbon & sample of powder of fuzzy areas, including the area under fuzzing & influenced area were specified completely. The result of EDS analysis & EDS map analysis & micro hardness of penetration capability& better connecting of ribbon rather than powder has been valided Manuscript profile
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  5 - Effect of bonding time on microstructure and completion of isotherm solidification during TLP bonding of dissimilar nickel base superalloys IN738LC and Nimonic 75
  Meysam Khakian Ghomi Mohammad Saeid Shahriari Saeid Nategh
  10.30495/apme.2021.510140.1047
  Joining of Inconel 738 and Nimonic 75 nickel base superalloys using Ni-Cr-B-containing interlayer, MBF-80, performed by transient liquid phase process (TLP) at 1080, 1120, 1150 and 1180°C and different times. Bonding microstructure was studied using a scanning elect More

  Joining of Inconel 738 and Nimonic 75 nickel base superalloys using Ni-Cr-B-containing interlayer, MBF-80, performed by transient liquid phase process (TLP) at 1080, 1120, 1150 and 1180°C and different times. Bonding microstructure was studied using a scanning electron microscope (SEM) and a light microscope. Microstructural studies showed that in short bonding time, the microstructure consists of continuous eutectic intermetallic phases in the center line of the joint and with increasing bonding time at constant temperature, eutectic intermetallic phases gradually decrease from the bonding and finally completely disappear. In order to predict the time required to isotherm solidification completion, Fick’s diffusion equations were used and it was observed that there is a good agreement between the predicted time of isotherm solidification completion and experimental results. Manuscript profile