Reducing Temper Embrittlement by Lanthanide Additions

Reducing Temper Embrittlement by Lanthanide Additions

This paper examines the temper embrittlement behavior of a series of 2 1/4%Cr-1%Mo steels with and without lanthanide metal (LnM) additions. The influence of LnM additions asmischmetal or as individual elements is assessed with respect to embrittlement behavior. Results show that LnM form harmless c...

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Veröffentlicht in:J. Met.; (United States) 1985-09, Vol.37 (9), p.22-28
Hauptverfasser: Garcia, C. I., Ratz, G. A., Burke, M. G., DeArdo, A. J.
Format: Artikel
Sprache:eng
Schlagworte:
360103 - Metals & Alloys- Mechanical Properties
ADDITIVES
ALLOYS
ANTIMONY
ARSENIC
CHEMICAL COMPOSITION
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-MOLYBDENUM STEELS
ELEMENTS
EMBRITTLEMENT
IMPURITIES
IRON ALLOYS
IRON BASE ALLOYS
LANTHANUM
MANGANATES
MANGANESE COMPOUNDS
MATERIALS SCIENCE
METALLURGICAL EFFECTS
METALLURGY
METALS
NONMETALS
OPTIMIZATION
OXYGEN COMPOUNDS
PHOSPHORUS
PHYSICAL METALLURGY
QUANTITY RATIO
RARE EARTHS
SEMIMETALS
STEELS
TEMPERATURE EFFECTS
TIN
TRANSITION ELEMENT COMPOUNDS
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Beschreibung
Zusammenfassung:This paper examines the temper embrittlement behavior of a series of 2 1/4%Cr-1%Mo steels with and without lanthanide metal (LnM) additions. The influence of LnM additions asmischmetal or as individual elements is assessed with respect to embrittlement behavior. Results show that LnM form harmless compounds in the matrix with impurities such as P, As, Sn and Sb, thus minimizing segregation-induced embrittlement. Optimum LnM levels well below those dictated from theoretical calculations are sufficient to trap the impurities for a given set of conditions.
ISSN:1047-4838
1543-1851
DOI:10.1007/BF03258635