The ductility of La-doped rapidly solidified NiAl

Journal Article · Sun Oct 01 04:00:00 EDT 1995 · Scripta Metallurgica et Materialia

DOI:https://doi.org/10.1016/0956-716X(95)00326-Q· OSTI ID:237836

Sun, B; Che, X; Lin, D ^[1]; Yang, G; Zhou, Y ^[2]

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1. Shanghai Jiao Tong Univ., Shanghai (China). Dept. of Materials Science and Engineering
2. Northwestern Polytechnic Univ., Xi`an (China). Dept. of Materials Science and Engineering

NiAl intermetallics with the composition of Al-60at.%Ni{approximately}Al-69at.%Ni undergo a thermoelastic martensitic transformation with Ms ranging from 100K (Al-60at.%Ni) to 1,200K (Al-69at.%Ni) when cooling rapidly from high temperature. These alloys exhibit shape memory effects at various temperatures depending upon the composition, thus are candidates for high temperature shape memory alloy (SMA). The wide applications of melt-spun NiAl SMA have been hampered greatly by its room temperature brittleness. In order to overcome the brittleness of the alloy and develop a prospective SMA alloy, the authors report in this paper preliminary results on the improvement of ductility of NiAl doped by La via melt-spinning.

• OSTI ID: 237836
• Journal Information: Scripta Metallurgica et Materialia, Journal Name: Scripta Metallurgica et Materialia Journal Issue: 7 Vol. 33; ISSN SCRMEX; ISSN 0956-716X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
CHEMICAL COMPOSITION
DUCTILITY
ELONGATION
FRACTURES
INTERMETALLIC COMPOUNDS
LANTHANUM ADDITIONS
MELTING
MICROSTRUCTURE
NICKEL ALLOYS
SAMPLE PREPARATION
SCANNING ELECTRON MICROSCOPY
SHAPE MEMORY EFFECT
SOLIDIFICATION
TRANSMISSION ELECTRON MICROSCOPY