Published December 1974 | Version v1
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Hardness behavior of binary and ternary niobium alloys at 77 and 3000K

Creators

Description

Effects of alloy additions of zirconium, hafnium, molybdenum, tungsten, rhenium, ruthenium, osmium, rhodium, and iridium on the hardness of niobium was determined. Both binary and ternary alloys were investigated by means of hardness tests at 77 and 3000K. Results showed that atomic size misfit plays a dominant role in controlling hardness of binary niobium alloys. Alloy softening, which occurred at dilute solute additions, is most likely due to an extrinsic mechanism involving interaction between solute elements and interstitial impurities. (auth)

Availability note (English)

MF available from INIS under the Report Number.

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Additional details

Additional titles

Augmented title (English)
Effects of Zr, Hf, Mo, W, Re, Ru, Os, Rh, and Ir additions

Publishing Information

Imprint Pagination
16 p.
Report number
N--75-12127

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
7227851
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
BINARY ALLOY SYSTEMS; HAFNIUM ALLOYS; HARDNESS; IRIDIUM ALLOYS; LOW TEMPERATURE; MEDIUM TEMPERATURE; MOLYBDENUM ALLOYS; NIOBIUM BASE ALLOYS; OSMIUM ALLOYS; RHENIUM ALLOYS; RHODIUM ALLOYS; RUTHENIUM ALLOYS; TEMPERATURE DEPENDENCE; TERNARY ALLOY SYSTEMS; TUNGSTEN ALLOYS; ZIRCONIUM ALLOYS
Descriptors DEC
ALLOY SYSTEMS; ALLOYS; MECHANICAL PROPERTIES; NIOBIUM ALLOYS; TRANSITION ELEMENT ALLOYS

Optional Information

Secondary number(s)
NASA-TN-D--7847; E--8083.