Precipitation-strengthened austenitic Fe−Mn−Ti alloys
نویسندگان
چکیده
منابع مشابه
Model for creep threshold stress in precipitation-strengthened alloys with coherent particles
The general climb model for creep threshold stress for dislocations interacting with incoherent particles is modified for the case of coherent precipitates, by taking into account elastic interactions between matrix dislocations and particles due to particle/matrix stiffness and lattice mismatches. The model is in qualitative agreement with experimental data for the Al–Sc system. 2002 Acta Mate...
متن کاملComparison between dislocation dynamics model predictions and experiments in precipitation-strengthened Al–Li–Sc alloys
Precipitate distributions were quantitatively measured by local electrode atom-probe (LEAP) tomography in several age-hardenable Al-based alloys to provide input to both analytical models and dislocation dynamics simulations of critical resolved shear strength, for comparison with experimentally measured Vickers microhardness values. The method of reconstructing precipitate-containing volumes f...
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The effect of substituting 0.01 or 0.02 at.% Er for Sc in an Al–0.06 Zr–0.06 Sc at.% alloy was studied to develop cost-effective high-temperature aluminum alloys for aerospace and automotive applications. Spheroidal, coherent, L12-ordered Al3(Sc, Zr, Er) precipitates with a structure consisting of an Er-enriched core surrounded by a Sc-enriched inner shell and a Zr-enriched outer shell (core/do...
متن کاملEffects of Li additions on precipitation-strengthened Al–Sc and Al–Sc–Yb alloys
Two Al–Sc-based alloys (Al–0.12Sc and Al–0.042Sc–0.009Yb, at.%) and their counterparts with Li additions (Al–2.9Li–0.11Sc and Al–5.53Li–0.048Sc–0.009Yb, at.%) are aged at 325 C. For both base alloys, the addition of Li results in greater peak hardness from incorporation of Li in the L12-structured a-Al3(Sc,Li) and a-Al3(Sc,Li,Yb) precipitates, and a concomitant increase in number density and vo...
متن کاملPrecipitation Hardening of Metal Alloys
Precipitation hardening, or age hardening, provides one of the most widely used mechanisms for the strengthening of metal alloys. The fundamental understanding and basis for this technique was established in early work at the U. S. Bureau of Standards on an alloy known as Duralumin [1,2]. Duralumin is an aluminum alloy containing copper and magnesium with small amounts of iron and silicon. In a...
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ژورنال
عنوان ژورنال: Metallurgical Transactions A
سال: 1979
ISSN: 0360-2133,1543-1940
DOI: 10.1007/bf02811994