Room temperature tensile deformation behavior of a Ni-based superalloy with high W content

Shu, Delong; Xie, Jun; Zhang, Fengjiang; Hou, Guichen; Wang, Zhenjiang; Shuling, Xun; Yu, Jinjiang; Sun, Xiaofeng; Zhou, Yizhou

doi:10.1007/s41230-021-9007-3

Cited by 2 publications

(2 citation statements)

References 23 publications

(24 reference statements)

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“…Porosity has been seen to have a direct relationship with grain size in previous studies. 48,49 It is advantageous to effectively remove porosity by providing the requisite heat input, by using the CMT-advance pulse method and the CMT-PADV method almost completely eliminates porosity. In the traditional CMT system, a small finger-shaped molten pool is formed, preventing gas holes from escaping; at the same time, the coarse columnar grain structure promotes porosity creation.…”

Section: Cmt Welding For Similar Metal Joiningmentioning

confidence: 99%

A comprehensive survey on the cold metal transfer process in welding similar and dissimilar materials and for cladding

Shanker

Wattal

2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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The growing use of aluminum in a variety of industries is driving technologists to create practical and effective techniques and processes for joining aluminum alloys. The main aim of this artifact is to critically review and examine the maturity of welding for comparable and differing materials and also for cladding using Cold Metal Transfer. CMT, which stands for Cold Metal Transfer in the acronym, is a modified MIG welding technique. The CMT and its modes are used in similar and dissimilar welding of Al as well as its alloys of 2xxx, 5xxx, 6xxx, and 7xxx series, and with other materials is discussed in detail and compared with other joining methods. The recent advancements in this field with enhanced mechanical properties of Al alloys, as well as high-performance welding techniques, are discussed in this article. The mechanical and microstructural properties of weld like weld strength, microhardness, corrosion behavior, surface morphology, ductility, and fracture mechanism were used to assess the efficiency of the weld. The following aspects of weld bead surface consistency are investigated in terms of bead uniformity along the welding path, bead surface smoothness, and spattering strength. The effort is made to conclude the welding system which is free from all welding flaws, like gas porosity, spattering, and intermetallic formation, resulting in welded joints with the highest mechanical properties. CMT as an advanced welding approach has gained a significant attraction from researchers in investigating it for the cladding process. The geometric and microstructural properties of a clad-like microhardness assessment, and corrosion resistance analyses were used to evaluate the applicability of CMT in the cladding process.

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Section: Cmt Welding For Similar Metal Joiningmentioning

confidence: 99%

A comprehensive survey on the cold metal transfer process in welding similar and dissimilar materials and for cladding

Shanker

Wattal

2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…Furthermore, addition of Si also leads to grain refinement of the primary BCC solid solution. Grain refinement strengthening is the main strengthening mechanism in most alloys [40][41] . Therefore, grain refinement by addition of Si can also improve the strength of NbMoTiVWSi x high-entropy alloys.…”

Section: Strengthening Mechanism Of Alloysmentioning

confidence: 99%

Microstructure characteristics and mechanical properties of NbMoTiVWSix refractory high-entropy alloys

Wang

Chen

et al. 2022

China Foundry

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Refractory high-entropy alloys are considered as potential structural materials for elevated temperature applications. To obtain refractory high-entropy alloys with high strength, different amounts of Si were added into the NbMoTiVW refractory high-entropy alloys. The effects of Si on the phase constitution, microstructure characteristics and mechanical properties of NbMoTiVWSi x alloys were investigated. Results show that when the addition of Si is 0, 0.025 and 0.05 (molar ratio), the alloys are consisted of primary BCC and secondary BCC in the intergranular area. When the addition of Si is increased to 0.075 and 0.1, eutectic structure including silicide phase and secondary BCC phase is formed. The primary BCC phase shows dendritic morphology, and is refined by adding Si. The volume fraction of intergranular area is increased from 12.22% to 18.13% when the addition of Si increases from 0 to 0.1. The ultimate compressive strength of the NbMoTiVW alloy is improved from 2,242 MPa to 2,532 MPa. Its yield strength is also improved by the addition of Si, and the yield strength of NbMoTiVWSi 0.1 reaches maximum of 2,298 MPa. However, the fracture strain of the alloy is decreased from 15.31% to 12.02%. The fracture mechanism of the alloys is changed from mixed fracture of ductile and quasi-cleavage to cleavage fracture with increasing of Si. The strengthening of alloys is attributed to the refinement of primary BCC phase, volume fraction increment of secondary BCC phase, and formation of eutectic structure by addition of Si.

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Room temperature tensile deformation behavior of a Ni-based superalloy with high W content

Cited by 2 publications

References 23 publications

A comprehensive survey on the cold metal transfer process in welding similar and dissimilar materials and for cladding

A comprehensive survey on the cold metal transfer process in welding similar and dissimilar materials and for cladding

Microstructure characteristics and mechanical properties of NbMoTiVWSix refractory high-entropy alloys

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