Microstructure evolution and high temperature resistance of Ti6Al4V/Inconel625 gradient coating fabricated by laser melting deposition

Sun, Zhonggang; Ji, Xiao Yan; Zhang, Wenshu; Chang, Liang; Xie, Guoliang; Chang, Hui; Zhou, Lian

doi:10.1016/j.matdes.2020.108644

Cited by 37 publications

(6 citation statements)

References 24 publications

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“…Sun et al [123] fabricated a functionally graded coating comprising Ti6Al4V and Inconel 625. They attributed the microstructural refinement to the nucleation rate that was significantly increased by the alloying elements.…”

Section: Boilersmentioning

confidence: 99%

The potential use of laser cladded functionally graded materials to mitigate degradation in boiler tube heat exchangers for power plant applications: A review

Morake,

Mutua,

Ruthandi

et al. 2023

Surface Engineering

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Surface modification is essential to safeguard heat exchangers from premature failure spurred by deterioration mechanisms such as corrosion and wear, which diminish performance. Meanwhile, modifying some substrates with dissimilar materials is challenging due to a mismatch in material properties. Moreover, individual alloy coatings on substrates are usually insufficient in the required material properties, leading to accelerated failure of equipment, especially in power plant industries. This article summarised the knowledge base on functionally graded materials (FGMs) while emphasising how this promising class of novel materials can reduce deterioration. Additionally, laser cladding is established to be a suitable technique for processing FGMs. A particular focus is laid on the laser beam interaction with the FGM and expounding on the processing and material parameters that affect the microstructural properties of FGMs. The development prospects for processing FGMs with superior clad quality characteristics to increase boiler pipes' service life and performance are also highlighted.

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Section: Boilersmentioning

confidence: 99%

The potential use of laser cladded functionally graded materials to mitigate degradation in boiler tube heat exchangers for power plant applications: A review

Morake,

Mutua,

Ruthandi

et al. 2023

Surface Engineering

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“…Additive Manufacturing (AM) technology is a 'bottomup' approach to manufacturing solid parts by means of gradual material accumulation, as opposed to traditional material cutting techniques. As a kind of additive manufacturing technology, LMD is favoured by designers and manufacturers of complex load-bearing components for major equipment due to its advantages such as short cycle, low cost, small margin, direct manufacturing of complex shapes and reduce processing costs [1][2][3][4]. However, the special metallurgical environment is prone to problems such as coarse and unevenly distributed structures in the process of laser near-net forming.…”

Section: Introductionmentioning

confidence: 99%

Refinement behaviour of microstructure in in-situ synthesised (TiB+TiC)/Ti6Al4V composites by laser melting deposition

Gu¹,

Zhou²,

Sun³

et al. 2023

Materials Science and Technology

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Laser melting deposition (LMD) was used to stimulate the columnar to equiaxed transition (CET) of Ti6Al4V grains by adding a few of nano-B4C particles. The results showed that the grains were gradually refined with the increase of B4C content. When the B4C content is 3 wt-%, the titanium matrix composite material of B4C and Ti6Al4V reached CET. Ti6Al4V and B4C happened in-situ reaction to form TiB and TiC reinforcements at high temperature, which not only precipitate at grain boundaries to limit grain growth but also act as nucleation to accelerate the non-spontaneous nucleation of β grains to achieve fine grain strengthening. It reveals the epitaxial growth mechanism of β grains at the deposition bottom, the transition pattern and CET mechanism of the interface structure in successive deposition layers.

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“…Additive manufacturing (AM) has been extensively utilized to fabricate titanium alloys with dual (α+β) phase because of its superiority in near net shape process [1][2][3][4]. Due to the high flexibility and customization of AM technology, it is feasible to fabricate titanium matrix composites (TMCs), hybrid, and functionally graded materials [5][6][7]. Among the various categories of AM processes, laser melting deposition (LMD) is a coaxial printing technology with energy-effective, finely controlled, and low-cost advantages.…”

Section: Introductionmentioning

confidence: 99%

Grain Refinement of Ti6al4v by Incorporating In-Situ Tib Nanowhiskers in Laser Melting Deposition

Fu¹,

Liu²,

Wang³

et al. 2023

Preprint

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Microstructure evolution and high temperature resistance of Ti6Al4V/Inconel625 gradient coating fabricated by laser melting deposition

Cited by 37 publications

References 24 publications

The potential use of laser cladded functionally graded materials to mitigate degradation in boiler tube heat exchangers for power plant applications: A review

The potential use of laser cladded functionally graded materials to mitigate degradation in boiler tube heat exchangers for power plant applications: A review

Refinement behaviour of microstructure in in-situ synthesised (TiB+TiC)/Ti6Al4V composites by laser melting deposition

Grain Refinement of Ti6al4v by Incorporating In-Situ Tib Nanowhiskers in Laser Melting Deposition

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