Precipitation hardened ferrous alloy with quasicrystalline...

Details Precipitation hardened ferrous alloy with quasicrystalline... Precipitation hardened ferrous alloy with quasicrystalline...

C - Chemistry, Metallurgy

21

D

C21D 6/02 (2006.01) C21D 6/00 (2006.01) C22C 38/44 (2006.01)

Patent

CA 2173507

According to the invention a precipitation hardened metallic alloy is provided, in which the strengthening is based on the precipitation of particles and wherein the particles have a quasicrystalline structure, said structure being essentially maintained at aging times up to 1000 h and tempering treatments to 650 °C, the strengthening involving an increase in tensile strength of at least 200 MPa.

L'invention concerne un alliage métallique durci par précipitation. Le durcissement est fondé sur la précipitation de particules ayant une structure quasi-cristalline, ladite structure étant essentiellement maintenue pendant un vieillissement d'une durée pouvant atteindre 1000 h et des traitement de revenu à une température pouvant atteindre 650 ~C. Ce durcissement entraîne une augmentation de la résistance à la traction d'au moins 200 MPa.

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