Iron and its dilute substitutional solid solutions

Leslie, W. C.

doi:10.1007/bf02680580

Cited by 368 publications

(73 citation statements)

References 39 publications

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“…1), noted that alloy soften ing has been observed in 2 1 different Fe-alloy systems. A s a result of our investiga tion, we can add five more elements (Nb, Ta, W, Os, and Pd) that also produce alloy softening in Fe.…”

Section: Discussion Alloy Softening and Hardeningmentioning

confidence: 99%

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Alloy softening in binary iron solid solutions

Stephens

Witzke

1976

Journal of the Less Common Metals

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Section: Discussion Alloy Softening and Hardeningmentioning

confidence: 99%

“…The extent of current interest in alloy softening in iron (Fe) a s well a s other bcc metals is evident from the bibliographies in the review papers by Leslie (ref. 1)and Pink (ref. 2) a s well a s in the more recent paper by Leemans and Fine (ref.…”

Section: Introductionmentioning

confidence: 99%

Alloy softening in binary iron solid solutions

Stephens

Witzke

1976

Journal of the Less Common Metals

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“…However, cobalt increases toughness whereas nickel lowers it in favour of a gain in hardness promoted by a high pearlite content (75 %) [19]. This does not contrast with the findings from [18] as ferrite is regarded there exclusively. The improvement of yield strength and impact toughness with cobalt is induced by hardening of ferrite.…”

Section: Introductionmentioning

confidence: 78%

“…So, cobalt is needed for the low temperature region. Both elements lead to an increase in toughness when alloyed (nickel much more than cobalt) accompanied by a decrease of transition temperature provoked by nickel and an increase induced by cobalt additions [18]. By addition of 4 wt% Co nodule count and thus, ferrite content can be increased.…”

Section: Introductionmentioning

confidence: 99%

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Ductile Cast Iron with High Toughness at Low Temperatures

Duwe

Tonn

2018

MSF

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Abstract. High life expectancy of cast components and good material performance at dynamic load are a prerequisite to cater for future trends in wind energy generators. To remain competitive in this ever evolving sector challenges reside in alloy development. In this work fractional factorial design has been applied to ferritic ductile iron with varying contents of silicon (1.6-2 wt%), nickel (0-1 wt%), cobalt (0-3 wt%) and copper (0-0.2 wt%). The minimum criteria the new alloy should meet were a minimum yield strength of 240 MPa and an impact work of minimal 8 J at a temperature of -20 °C for wall thicknesses of 60-200 mm. To obtain these mechanical properties thick-walled castings with additional insulation were produced to achieve a higher thermic module. They provided the material for test specimens to perform static tensile tests, Charpy impact tests at varying temperatures and a microstructure analysis. With these results, a sweet spot plot has been created. That way, an optimum alloy composition could be found and has been proven by validation experiment.The optimum alloy for thick-walled castings is composed of Si = 1.6 wt%, Cu = 0.2 wt%, Ni = 0 wt% and Co = 0 wt%. It offers an enhancement in yield strength and acceptable impact work at low temperatures for massive castings in as cast state. The heat treated, full ferritic material could even improve these results.

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An Fe‐Ni‐Cr embedded atom method potential for austenitic and ferritic systems

2018

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Fe-Ni-Cr stainless-steels are important structural materials because of their superior strength and corrosion resistance. Atomistic studies of mechanical properties of stainless-steels, however, have been limited by the lack of high-fidelity interatomic potentials. Here using density functional theory as a guide, we have developed a new Fe-Ni-Cr embedded atom method potential. We demonstrate that our potential enables stable molecular dynamics simulations of stainless-steel alloys at high temperatures, accurately reproduces the stacking fault energyknown to strongly influence the mode of plastic deformation (e.g., twinning vs. dislocation glide vs. cross-slip)-of these alloys over a range of compositions, and gives reasonable elastic constants, energies, and volumes for various compositions. The latter are pertinent for determining short-range order and solute strengthening effects. Our results suggest that our potential is suitable for studying mechanical properties of austenitic and ferritic stainless-steels which have vast implementation in the scientific and industrial communities. Published 2018.

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Iron and its dilute substitutional solid solutions

Cited by 368 publications

References 39 publications

Alloy softening in binary iron solid solutions

Alloy softening in binary iron solid solutions

Ductile Cast Iron with High Toughness at Low Temperatures

An Fe‐Ni‐Cr embedded atom method potential for austenitic and ferritic systems

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