Chemistry - What does "René" mean in René alloys?

Solution 1:

Similar to inox for inoxydable (inoxidable), it equally is a French coinage. To tune mechanical properties of iron, mixing additives leads to numerous alloys of iron. In case of rene or rené as contraction of résistant (durable) and on base of Nickel, and is example of the superalloys.

This source technologie des métaux et alliages - particulièrement en aéronautique (technology of metals and alloys, especially in aviation industry) by Dominique Ottello (2003), section "Les alliages de nickel: / the alloys of nickel" on page 15 states:

Ils conviennent pour les trois types de sollicitations : MÉCANIQUES, THERMIQUES et CHIMIQUES (très grande résistance à la fatigue, au fluage et à la corrosion à chaud). Il existe plusieurs familles d'alliages de NICKEL :

  • Les alliages NICKEL + CUIVRE : alliages "MONEL" qui présentent une bonne résistance à la corrosion chimique, utilisables jusqu'à 500 °C.

  • Les alliages NICKEL + CHROME + FER : alliages "INCONEL" qui sont très tenaces et utilisables jusqu'à 700 à 800 °C.

  • Les alliages NICKEL + CHROME + COBALT : alliages "NIMONIC" et alliages "RENE". Ils sont très tenaces et présentent une bonne résistance au FLUAGE, utilisables jusqu'à 950 °C.

NOTA : Dans les alliages de NICKEL à haute température, on rencontre :

  • Des alliages plus spécialement réservés à la FONDERIE.
  • Des alliages pour CORROYAGE.
  • Des alliages à durcissement structural par traitements thermiques.

For our non-Francophon readers:

These [Nickel-derived alloys] are suitable for three fields of application / strain: mechanical, thermic, and chemical (very high endurance against fatigue, compression, and corrosion at high temperatures). There are several groups of nickel-based alloys

  • alloys based on nickel and copper: "monel" alloy, with a good resistance against chemical corrosion, serviceable up to $\pu{500 ^\circ{}C}$ [i.e., $\pu{932 F}$]
  • alloys based on nickel, chrome, iron: "inconel"alloy, tenacious and deployable up to $700$ or $\pu{800 ^\circ{}C}$ [i.e., $1292$ to $\pu{1472 F}$].
  • alloys based on nickel, chrome, and cobalt: "nimonic" and "rene" alloys. These are very tenacious and exhibit a good resistance against traction, deployable up to $\pu{950 ^\circ{}C}$ [i.e., $\pu{1742 F}$].

Note: One finds, among the nickel-based alloys with high melting point:

  • alloys foreseen / dedicated for deployment in foundries / casting houses
  • alloys for wrought (e.g., forging, rolling, etc.)
  • alloys for hardening by thermal treatment

Voilà !

Solution 2:

René means “re-born” in French, it is related to one of the alloys which was not weldable when invented, but after modification it was re-born and used in production.