| AUBERT & DUVAL Patent applications |
| Patent application number | Title | Published |
|---|
| 20120037280 | METHOD FOR PRODUCING A PART MADE FROM A SUPERALLOY BASED ON NICKEL AND CORRESPONDING PART - A method for manufacturing a blank part in Ni-base superalloy, wherein an alloy is prepared and heat treatments are conducted characterized in that: the said superalloy contains at least a total of 2.5% of Nb and Ta; heat treatment is conducted comprising a plurality of steps: a first step at between 850 and 1000° C. held for at least 20 minutes to precipitate the δ phase at the grain boundaries; a second step held at a temperature higher than the temperature of the first step allowing partial dissolution of the δ phase obtained at the first step; ageing treatment comprising a third step and optionally one or more additional steps at a temperature below the temperature of the first step and allowing precipitation of the hardening phases γ′ and γ″. Part thus obtained. | 02-16-2012 |
| 20110048583 | HARDENED MARTENSITIC STEEL, METHOD FOR PRODUCING A COMPONENT FROM THIS STEEL AND COMPONENT OBTAINED IN THIS MANNER - The invention relates to steel which is characterized by the following composition as expressed in percentages by weight: —C=0.18 0.30%, —Co=5-7%, —Cr=2-5%, —Al=1-2%, —Mo+W/2=1-4%, —V=trace 0.3%, —Nb=trace 0.1%, —B=trace−50 ppm, —Ni=10.5-15% with Ni≧7+3.5 Al, —Si=trace 0.4%, —Mn=trace 0.4%, —Ca=trace−500 ppm, —Rare earths=trace−500 ppm, —Ti=trace−500 ppm, −O=trace−200 ppm if the steel is obtained by means of powder metallurgy or trace−50 ppm if the steel is produced in air or under a vacuum from molten metal, —N=trace−100 ppm, —S=trace−50 ppm, —Cu=trace−1%, and —P=trace−200 ppm, the remainder including iron and the inevitable impurities resulting from production. The invention also relates to a method of producing a part from said steel and to the part thus obtained. | 03-03-2011 |
| 20110041961 | HARDENED MARTENSITIC STEEL, METHOD FOR PRODUCING A COMPONENT FROM THIS STEEL AND COMPONENT OBTAINED IN THIS MANNER - The invention relates to steel which is characterized by the following composition as expressed in percentages by weight: —C=0.18 0.30%, —Co=5-7%, —Cr=2-5%, —Al=1-2%, —Mo+W/2=1-4%, —V=trace 0.3%, —Nb=trace 0.1%, —B=trace-50 ppm, —Ni=10.5-15% with Ni≧7+3.5 Al, —Si=trace 0.4%, —Mn=trace 0.4%, —Ca=trace-500 ppm, —Rare earths=trace-500 ppm, —Ti=trace-500 ppm, —O=trace-200 ppm if the steel is obtained by means of powder metallurgy or trace-50 ppm if the steel is produced in air or under a vacuum from molten metal, —N=trace-100 ppm, —S=trace-50 ppm, —Cu=trace-1%, and —P=trace-200 ppm, the remainder including iron and the inevitable impurities resulting from production. The invention also relates to a method of producing a part from said steel and to the part thus obtained. | 02-24-2011 |
| 20100276038 | MARTENSITIC STAINLESS STEEL, METHOD FOR MAKING PARTS FROM SAID STEEL AND PARTS THUS MADE - Martensitic stainless steel, characterised in that it comprises, in percentages by weight:
| 11-04-2010 |
| 20100200119 | HARDENED MARTENSITIC STEEL HAVING A LOW OR ZERO CONTENT OF COBALT, METHOD FOR PRODUCING A COMPONENT FROM THIS STEEL, AND COMPONENT OBTAINED IN THIS MANNER - Steel, characterised in that the composition thereof is, in percentages by weight:
| 08-12-2010 |
| 20100180991 | Titanium alloy heat treatment process, and part thus obtained - Ti 5-5-5-3 titanium alloy heat treatment process having, in weighted percentages, the following composition:
| 07-22-2010 |
