Microstructure evolution and brazing mechanisms of the Ti2AlC/Ni joints using nickel based filler alloy

Lu, Chengjie; Zhang, Jie; Duan, Tianbo; Liu, Chunfeng

doi:10.1016/j.jeurceramsoc.2016.05.024

Cited by 27 publications

(5 citation statements)

References 27 publications

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“…According to the empirical formula, the relationship between the elements’ diffusion distance ( δ ) and time ( t ) can be written as [ 31 , 32 , 47 ]: δ n = D t …”

Section: Resultsmentioning

confidence: 99%

“…Therefore, it is necessary to understand the diffusion behavior of atoms during the brazing. Diffusion activation energy ( Q ) and the diffusion coefficient ( D ) are physical quantities that describe how easily atoms can diffuse [ 31 , 32 , 33 ]. Theoretical analysis and experiments show that there is a semi-empirical correlation between the Q and the pre-exponential factor in the Arrhenius equation of the diffusion equation [ 34 , 35 , 36 , 37 ].…”

Section: Introductionmentioning

confidence: 99%

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Interfacial Microstructure and Mechanical Properties of 1Cr18Ni9Ti/1Cr21Ni5Ti Stainless Steel Joints Brazed with Mn-Based Brazing Filler

Chen

Chen²,

Yang³

et al. 2022

Materials

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The problem of stainless steel brazing is still the focus of scientific research. In this work, the Mn-based brazing filler was used to braze 1Cr18Ni9Ti and 1Cr21Ni5Ti stainless steel. The typical microstructure of the 1Cr18Ni9Ti/1Cr21Ni5Ti joint was analyzed in detail, and the interface structure of the joint was determined to be 1Cr18Ni9Ti/Mn(s, s)/1Cr21Ni5Ti. The brazing temperature and holding time were shown to have a great influence on the microstructure of the brazed joint. The tensile strength of brazed joints first increased and then decreased with the rising of the brazing temperature and the holding time. The maximum tensile strength was 566 MPa when the joints were brazed at 1125 °C for 15 min. The diffusion of Mn and Cr was an important factor affecting the quality of the joints. The diffusion distances of Mn and Cr at different brazing temperatures and holding times were measured, and the diffusion activation energy and diffusion coefficient were achieved by the Arrhenius equation.

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“…According to the empirical formula, the relationship between the elements’ diffusion distance ( δ ) and time ( t ) can be written as [ 31 , 32 , 47 ]: δ n = D t …”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Interfacial Microstructure and Mechanical Properties of 1Cr18Ni9Ti/1Cr21Ni5Ti Stainless Steel Joints Brazed with Mn-Based Brazing Filler

Chen

Chen²,

Yang³

et al. 2022

Materials

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show abstract

“…Three samples were tested for each brazing parameter. Furthermore, a special designed jig was designed for this work [16] in order to minimize the influence of friction on the results of the tests: the jig was able to adjust the gap width accordingly.…”

Section: Methodsmentioning

confidence: 99%

Brazing mechanisms of the Ti 2 AlC joints using a pure Al filler metal

Sun

Zhang

et al. 2017

Ceramics International

Self Cite

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Brazing of Ti 2 AlC ceramics has been successfully performed using a pure Al filler metal, in the temperature range 1023 K-1173 K and with holding time ranging from 0 min to 30 min. The microstructure of the Ti 2 AlC joints was studied, and the mechanical properties of the joints were evaluated by shear strength test. It is observed that the Al filler has weak effect on the stability of Ti 2 AlC substrate, and only a small amount of decomposition products including the TiC x and TiAl 3 compounds can be observed in the joints. In addition, the formation of an inter-diffusion layer in the Ti 2 AlC substrate is considered as the major brazing mechanism. The maximum shear strength of the Ti 2 AlC joints using the pure Al filler metal is 95 MPa, with an electrical conductivity of 2.21×10 6 S•m-1 , after holding the sample at 1123 K for 10 min.

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“…The easy outwards diffusion of Al can support one excellent bonding strength between Ti 2 AlC and other metals or ceramics16 . For example, Lu et al17 reported that the shear strength reached 193 MPa with Ni 3 (Al, Ti) formation by brazing Ti 2 AlC with Ni at 1100°C for 30 min.…”

mentioning

confidence: 99%

Hyperwide band electromagnetic wave absorbing Al2O3 coating boosted with in-situ generated nano TiO1.81

Yu,

Ma,

et al. 2024

Preprint

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No choice but to choose the dielectric loss type materials for realizing the high temperature electromagnetic (EM) wave dissipation is well acknowledged, as the magnetic EM wave absorbing materials generally have functional failure above 600°C 1. However, the electromagnetic wave absorption bandwidth (EAB) of current dielectric loss type materials is too narrow. Here, we invented one TiO1.81/Al2O3 coating characterized with the twice of the widest EAB reported among all the current dielectric loss type materials. The simple fabrication process is composed of the supersonic atmospheric plasma spraying (SAPS) of Ti2AlC/Al2O3 powders and following oxidation at 950°C for 2 h in air. The occurred in-situ double decomposition mechanism transformed Ti2AlC (45 µm) into O-vacancy-defected TiO1.81 (30 nm). The interfacial polarization contribution was suddenly boosted due to the appearance of a huge amount of nano hetero-interfaces. The continuous outwards diffusion of Ti and Al elements further endows our coating self-protective capacity through the formation of covered TiO1.81 and Al2O3. As MAX phase contains more than 90 categories, our work supports one open window for fabricating superior EM wave absorbing coatings used in high temperatures.

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Microstructure evolution and brazing mechanisms of the Ti2AlC/Ni joints using nickel based filler alloy

Cited by 27 publications

References 27 publications

Interfacial Microstructure and Mechanical Properties of 1Cr18Ni9Ti/1Cr21Ni5Ti Stainless Steel Joints Brazed with Mn-Based Brazing Filler

Interfacial Microstructure and Mechanical Properties of 1Cr18Ni9Ti/1Cr21Ni5Ti Stainless Steel Joints Brazed with Mn-Based Brazing Filler

Brazing mechanisms of the Ti 2 AlC joints using a pure Al filler metal

Hyperwide band electromagnetic wave absorbing Al2O3 coating boosted with in-situ generated nano TiO1.81

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