Al[sub 2]Ti precipitation in Al[sub 64]Fe[sub 8]Ti[sub 28] alloy

Journal Article · Thu Mar 31 23:00:00 EST 1994 · Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States)

OSTI ID:7278332

Yang, T Y; Goo, E ^[1]

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1. Univ. of Southern California, Los Angeles, CA (United States). Dept. of Materials Science and Engineering

Precipitates of Al[sub 2]Ti with three different stacking sequences have been observed in Fe-modified L1[sub 2]-type ordered Al[sub 3]Ti specimens. Two of the stacking sequences have been observed previously. The third type of Al[sub 2]Ti, Al[sub 2]Ti[sup III], is identified in this study using conventional and high resolution transmission electron microscopy (TEM). The Al[sub 2]Ti precipitates form as plates along [l brace]100[r brace] planes and compression tests performed at liquid N temperature show microcracks occurring along those [l brace]100[r brace] planes. The Al[sub 2]Ti phase is believed to be responsible for the low cleavage strength that is observed.

• OSTI ID: 7278332
• Journal Information: Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States), Journal Name: Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States) Vol. 25:4; ISSN 0360-2133; ISSN MTTABN
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
ALLOYS
ALUMINIUM ALLOYS
ALUMINIUM BASE ALLOYS
CRYSTAL STRUCTURE
DATA
DIAGRAMS
EXPERIMENTAL DATA
INFORMATION
INTERMETALLIC COMPOUNDS
IRON ALLOYS
NUMERICAL DATA
PHASE DIAGRAMS
PHASE STUDIES
PRECIPITATION
SEPARATION PROCESSES
TITANIUM ALLOYS