AUBERT & DUVAL Patent applications |
Patent application number | Title | Published |
20140213375 | METHOD FOR PRODUCING MARTENSITIC STEEL WITH MIXED HARDENING - The invention relates to a method of producing a martensitic steel comprising a content of other metals such that it can be hardened by intermetallic compound and carbide precipitation, with an Al content of between 0.4% and 3%. The heat shaping temperature of the last heat shaping pass of said steel is lower than the solubility temperature of the aluminum nitrides in the steel, and the treatment temperature for each potential heat treatment after said last heat shaping pass is lower than the solid-state solubility temperature of the aluminum nitrides in said steel. | 07-31-2014 |
20130037183 | THERMAL TREATMENT FOR THE STRESS-RELIEF OF TITANIUM ALLOY PARTS - The invention relates to a process for the preparation of a part made of titanium alloy, comprising a thermal treatment for relaxing the internal stresses of the part, the thermal treatment comprising maintaining at a temperature “T | 02-14-2013 |
20120183432 | NICKEL-BASED SUPERALLOY AND PARTS MADE FROM SAID SUPERALLOY - A nickel superalloy has the following composition, the concentrations of the different elements being expressed as wt-%: Formula (I), the remainder consisting of nickel and impurities resulting from the production of the superalloy. In addition, the composition satisfies the following equation, wherein the concentrations of the different elements are expressed as atomic percent: Formula (II). | 07-19-2012 |
20120132326 | METHOD FOR PRODUCING MARTENSITIC STEEL WITH MIXED HARDENING - A method of producing a martensitic steel including a content of other metals such that it can be hardened by intermetallic compound and carbide precipitation, with an Al content of between 0.4% and 3%. The heat shaping temperature of a last heat shaping pass of the steel is lower than the solubility temperature of aluminum nitrides in the steel, and a treatment temperature for each potential heat treatment after the last heat shaping pass is lower than the solid-state solubility temperature of the aluminum nitrides in the steel. | 05-31-2012 |
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 |