Progress in structural materials for aerospace systems11The Golden Jubilee Issue—Selected topics in Materials Science and Engineering: Past, Present and Future, edited by S. Suresh.

Williams, James C.; Starke, E.A.

doi:10.1016/j.actamat.2003.08.023

Cited by 1,853 publications

(460 citation statements)

References 11 publications

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“…Processing parameter combinations that lead to regions of high residual stress formation and high distortion have been determined, and the impact of processing parameters upon the predicted lamellar spacing has been presented. FUSION welding techniques have been utilized in the structural joining of safety-critical components across aerospace, [1] automotive, [2] and power generation [3,4] industries for many years, thanks to the considerable joint-integrity that they can offer, and their relatively low capital investment and production costs. [1] Whilst older welding methods such as tungsten inert gas (TIG) produce large weld pools and heat-affected zones [5] due to the size of the arc formed, the newer ''high power-density'' beam-type processes, such as laser welding, offer a much narrower fusion zone and heat-affected zone, [6] as the energy from the power source is much more focused.…”

mentioning

confidence: 99%

An Integrated Modeling Approach for Predicting Process Maps of Residual Stress and Distortion in a Laser Weld: A Combined CFD–FE Methodology

Turner

Panwisawas

Sovani

et al. 2016

Metall Mater Trans B

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Laser welding has become an important joining methodology within a number of industries for the structural joining of metallic parts. It offers a high power density welding capability which is desirable for deep weld sections, but is equally suited to performing thinner welded joints with sensible amendments to key process variables. However, as with any welding process, the introduction of severe thermal gradients at the weld line will inevitably lead to process-induced residual stress formation and distortions. Finite element (FE) predictions for weld simulation have been made within academia and industrial research for a number of years, although given the fluid nature of the molten weld pool, FE methodologies have limited capabilities. An improvement upon this established method would be to incorporate a computational fluid dynamics (CFD) model formulation prior to the FE model, to predict the weld pool shape and fluid flow, such that details can be fed into FE from CFD as a starting condition. The key outputs of residual stress and distortions predicted by the FE model can then be monitored against the process variables input to the model. Further, a link between the thermal results and the microstructural properties is of interest. Therefore, an empirical relationship between lamellar spacing and the cooling rate was developed and used to make predictions about the lamellar spacing for welds of different process parameters. Processing parameter combinations that lead to regions of high residual stress formation and high distortion have been determined, and the impact of processing parameters upon the predicted lamellar spacing has been presented.

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mentioning

confidence: 99%

An Integrated Modeling Approach for Predicting Process Maps of Residual Stress and Distortion in a Laser Weld: A Combined CFD–FE Methodology

Turner

Panwisawas

Sovani

et al. 2016

Metall Mater Trans B

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“…In order to comply with such requirements, the improvement of surface properties of these materials is essential, as well as the understanding of the links among their composition, processing method, microstructure and properties (1) . In addition, high temperature resistant alloys must combine two major requirements when thermal cycles are applied: low scale growth rate and adequate scale adherence (2) .…”

Section: Introductionmentioning

confidence: 99%

Effects of plasma immersion ion implantation on fatigue properties of titanium alloy surfaces

Souza

Fernandes²,

Mändl³

et al. 2018

RBAV

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“…Titanium and titanium alloys are widely used in the aircraft industry; however, their temperature capability of up to 600°C and relatively low wear resistance restrict their application for high-temperature parts of gas turbine engines [8,15]. Due to the strong demand for reducing aircraft engine weight, the temperature and wear performance of Ti alloys need to be improved.…”

Section: Introductionmentioning

confidence: 99%

Hot Corrosion of Ti–Re Alloys Fabricated by Selective Laser Melting

et al. 2017

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Selective laser melting (SLM) is an additive manufacturing process that enables novel alloy production by combining metals with significantly different physical properties. In this paper, the hot corrosion behavior of Ti-Re alloys fabricated by SLM was studied in a mixture of Na 2 SO 4 and NaCl salts at 600°C. The morphology and composition of the corrosion products were characterized by scanning electron microscopy with energy-dispersive X-ray spectroscopy and X-ray diffraction to understand the degradation mechanisms. It has been shown that the hot corrosion resistance of Ti-Re alloys was influenced by the chemical inhomogeneity of the oxide scale resulting from the presence of rhenium particles undissolved during the SLM process.

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Progress in structural materials for aerospace systems11The Golden Jubilee Issue—Selected topics in Materials Science and Engineering: Past, Present and Future, edited by S. Suresh.

Cited by 1,853 publications

References 11 publications

An Integrated Modeling Approach for Predicting Process Maps of Residual Stress and Distortion in a Laser Weld: A Combined CFD–FE Methodology

An Integrated Modeling Approach for Predicting Process Maps of Residual Stress and Distortion in a Laser Weld: A Combined CFD–FE Methodology

Effects of plasma immersion ion implantation on fatigue properties of titanium alloy surfaces

Hot Corrosion of Ti–Re Alloys Fabricated by Selective Laser Melting

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