Title of article
On the role of recovery in creep of precipitation-strengthened polycrystalline nickel-base alloys
Author/Authors
?adek، نويسنده , , J and Pahutov?، نويسنده , , M and ?ustek، نويسنده , , V and Dlouh?، نويسنده , , A، نويسنده ,
Pages
8
From page
391
To page
398
Abstract
An attempt is made to shed some new light on the role of recovery in creep of precipitation-strengthened polycrystalline nickel-base creep-resistant alloys, comparing some basic creep data for a Ni–16Cr–10W–4Mo–Ti–Al alloy with similar data for a low carbon 18Cr–12Ni stainless steel and a 15M2B–Fe–18Cr–12Ni in situ composite. The comparison suggests that the minimum creep strain rate of precipitation-stregthened polycrystalline nickel-base creep-resistant alloys is controlled rather by recovery (driven by internal stress affected by the presence of γ′-particles), than by dislocation glide/climb (driven by effective stress) past these particles. An urgent need to study in detail recovery in creep of precipitation-strengthened polycrystalline nickel-base alloys is emphasized.
Keywords
Creep , Ni-base alloys , ??-particles , effective stress , Recovery , Rate controlling process , Internal stress , Dislocation glide/climb
Journal title
Astroparticle Physics
Record number
2052790
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