Molecular dynamics simulation of linear friction welding between dissimilar Ti-based alloys

Song, Changbao; Lin, Tiesong; He, Peng; Jiao, Zhen; Tao, Jun; Ya-juan, JI

doi:10.1016/j.commatsci.2013.11.013

Cited by 40 publications

(29 citation statements)

References 17 publications

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“…In order to provide the information for diffusion behaviors of atoms during diffusion welding, the calculation of mean square displacement (MSD) was conducted in the current investigation. According to the definition, MSD can be expressed as [ 16 ]

where N is the total number of atoms in the system, and

denotes the position of atom i at time t .…”

Section: Modeling and Methodsmentioning

confidence: 99%

“…Bai et al investigated the diffusion behaviors of the interface between the tool and the chip during machining titanium alloy [ 15 ]. Song et al studied the atomic diffusion behaviors in linear friction welding between Ti and Ti–Al alloy [ 16 ]. Luo et al investigated the diffusion phenomenon at Mo–Ti interface, and they found that the temperature plays a key role in the course of interface diffusion [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

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Atomistic Investigation on Diffusion Welding between Stainless Steel and Pure Ni Based on Molecular Dynamics Simulation

Zhang

Jiang

2018

Materials

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Based on molecular dynamics (MD) simulation, the behaviors and mechanisms of diffusion welding between 304 stainless steel (304 SS) and pure Ni were investigated in the present study. The results show that surface roughness has a significant influence on the diffusion behaviors of atoms during diffusion welding between two different materials, and it is suggested that the rough surface should be set on the pure Ni rather than the 304 SS during the diffusion welding between them. Temperature plays an important role in the interface diffusion. With the increase of temperature, the number of atoms diffusing into the opposite side increases and the diffusion distances increase as well. As a consequence, the diffusion welding should be performed at a suitably elevated temperature. The influence of vertical pressure on the diffusion bonding between the two materials includes two aspects. One is to increase the contact area via deforming the asperities or grooves at the interface, which provides more opportunities for the diffusion between the two materials. The other is to reduce the mobility of atoms within a lattice. As a consequence, the pressure effect is smaller than temperature effect during diffusion welding between 304 SS and pure Ni.

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where N is the total number of atoms in the system, and

denotes the position of atom i at time t .…”

Section: Modeling and Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Atomistic Investigation on Diffusion Welding between Stainless Steel and Pure Ni Based on Molecular Dynamics Simulation

Zhang

Jiang

2018

Materials

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“…O processo de soldagem por fricção é considerado uma tecnologia verde, já que apresenta elevada qualidade de união em conjunto com elevada eficiência energética [4]. Devido a esses fatores a soldagem por fricção vem sendo amplamente utilizada como processo de fabricação.…”

Section: Influência Dos Parâmetros De Soldagem Em Tubos De Alumínio Aunclassified

Influência dos Parâmetros de Soldagem em Tubos de Alumínio AA6063 pelo Processo CDFW

et al. 2018

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Resumo Neste trabalho realizou-se um estudo das interações entre as variáveis do processo de soldagem por atrito, conhecido como Continuous Drive Friction Welding (CDFW) em junção de tubos de alumínio AA6063, com diâmetro de 12,7 mm e espessura de 1,59 mm. Foi analisada a influência das variáveis: rotação, pressão de atrito e tempo de atrito nas dimensões finais da rebarba e comprimento da peça soldada. O número de experimentos realizados foi definido por planejamento fatorial completo (3k), onde cada variável de entrada recebeu três níveis. Os corpos de prova foram produzidos de acordo com as combinações de parâmetros e medidos para obter os valores finais do comprimento final e das dimensões da rebarba. Os dados foram analisados por um software de ferramentas estatísticas, utilizando gráfico de Pareto, análise das interações e variância. Observou-se que a variável de entrada que apresentou menor influência nos resultados foi a velocidade de rotação. Os melhores resultados ocorreram nos corpos de provas com menor diminuição no comprimento e rebarbas mais uniformes, foram obtidos com combinações do menor valor de pressão.

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“…At present, research on linear friction welding of titanium alloys mainly focuses on welding process, joint microstructure and conventional mechanical properties [13][14][15][16]. There are few studies and reports in regard to the effect of joint microstructure on fracture toughness considered as a crucial factor indicating the integrity of a BLISK.…”

Section: Introductionmentioning

confidence: 98%

Effects of post-weld heat treatment on fracture toughness of linear friction welded joint for dissimilar titanium alloys

Tao

Zhang

et al. 2015

Materials Science and Engineering: A

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Molecular dynamics simulation of linear friction welding between dissimilar Ti-based alloys

Cited by 40 publications

References 17 publications

Atomistic Investigation on Diffusion Welding between Stainless Steel and Pure Ni Based on Molecular Dynamics Simulation

Atomistic Investigation on Diffusion Welding between Stainless Steel and Pure Ni Based on Molecular Dynamics Simulation

Influência dos Parâmetros de Soldagem em Tubos de Alumínio AA6063 pelo Processo CDFW

Effects of post-weld heat treatment on fracture toughness of linear friction welded joint for dissimilar titanium alloys

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