Large magnetoelastic effects in paramagnetic stainless steels from first principles

• Using first-principles theories, we demonstrate that the elastic properties of substitutional disordered Fe-rich Fe-Cr-Ni alloys (austenitic stainless steels) sensitively depend on their magnetic state. Due to the strong magnetoelastic effects in paramagnetic Fe0.70Cr0.15Ni0.15 alloy, the room-temperature magnetism is found to alter the usually dominating chemical effects and give a large anomalous contribution to the temperature dependence of the elastic constants.

Ämnesord

NATURVETENSKAP  -- Fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences (hsv//eng)

Nyckelord

ab initio calculations

chromium alloys

elasticity

iron alloys

magnetoelastic effects

nickel alloys

paramagnetic materials

stainless steel

elastic-constants

1st-principles theory

transition-metals

potential

model

alloys

temperature

iron

approximation

magnetism

fe

Physics

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ref (ämneskategori)

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