Fe–Al materials for structural applications at high temperatures: Current research at MPIE

Palm, Martin

doi:10.3139/146.110056

Cited by 69 publications

(29 citation statements)

References 127 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…4,5 Recent progress in increasing the strength, specifically of Fe 3 Al-based alloys at high temperatures, has again put these alloys into the focus for industrial application. [6][7][8] While the production of corrosion resistant coatings from FeAl-based alloys has been widely explored by different techniques including laser cladding (see e.g., Refs. 9-11), additive layer manufacturing (ALM) of samples or parts from iron aluminide-based alloys has been hardly investigated.…”

Section: Introductionmentioning

confidence: 99%

Laser metal deposition and selective laser melting of Fe–28 at.% Al

et al. 2014

Self Cite

View full text Add to dashboard Cite

The iron aluminide Fe 3 Al has been successfully processed by selective laser melting (SLM) and laser metal deposition (LMD). Process parameters have been determined by which defect free and dense (.99.5%) samples were produced. However, due to the low thermal conductivity of Fe 3 Al, preheating the substrate to 200°C was necessary to prevent cracking during cooling. Microstructural characterization by electron backscatter diffraction (EBSD) showed that in spite of the high cooling rates large elongated grains grew in the building direction, more distinctive for SLM than for LMD. These grains show a continuous change in the crystallographic orientation. Evaluation of the compressive flow stress showed that the anisotropic microstructure results in anisotropic mechanical properties, depending whether the samples are loaded in building direction or perpendicular to it. The alloy shows a very high strength up to 600°C and -concerning the coarse microstructure -becomes ductile already at low temperatures.

show abstract

Section: Introductionmentioning

confidence: 99%

Laser metal deposition and selective laser melting of Fe–28 at.% Al

et al. 2014

Self Cite

View full text Add to dashboard Cite

show abstract

“…[1][2][3] These properties, which should improve with increasing Al content, strongly contribute to its candidate role as a high temperature structural material. However, the Al-rich part of the Fe-Al phase diagram with >50 at.% Al has not yet been finally determined.…”

Section: Introduction and Literature Reviewmentioning

confidence: 99%

The Al-Rich Part of the Fe-Al Phase Diagram

Scherf

Heilmaier

et al. 2016

J. Phase Equilib. Diffus.

213

View full text Add to dashboard Cite

The Al-rich part of the Fe-Al phase diagram between 50 and 80 at.% Al including the complex intermetallic phases Fe 5 Al 8 (e), FeAl 2 , Fe 2 Al 5 , and Fe 4 Al 13 was re-investigated in detail. A series of 19 alloys was produced and heat-treated at temperatures in the range from 600 to 1100°C for up to 5000 h. The obtained data were further complemented by results from a number of diffusion couples, which helped to determine the homogeneity ranges of the phases FeAl 2 , Fe 2 Al 5 , and Fe 4 Al 13 . All microstructures were inspected by scanning electron microscopy (SEM), and chemical compositions of the equilibrium phases as well as of the alloys were obtained by electron probe microanalysis (EPMA). Crystal structures and the variation of the lattice parameters were studied by x-ray diffraction (XRD) and differential thermal analysis (DTA) was applied to measure all types of transition temperatures. From these results, a revised version of the Al-rich part of the phase diagram was constructed.

show abstract

“…It is noted, that the present alloys also compare favourably to some Ni-based alloys, e.g. Inconel 617 [9,25]. Fig.…”

Section: Creepmentioning

confidence: 91%