Mechanical properties of L1{sub 2} type Zn{sub 3}Ti-based alloy

Conference · Thu Jul 01 04:00:00 EDT 1999

OSTI ID:20001632

Hosoda, Hideki; Hanada, Shuji

An alloy composed of L1{sub 2}-type Zn{sub 3}Ti was investigated in terms of phase stability and mechanical properties. Zn and Ti powders were mixed at a composition of Zn-25mol%Ti using a ball mill in Ar, and an ingot was made by melting the powders. Optical microscopy, X-ray diffraction analysis and thermogravimetry--differential thermal analysis were carried out. Mechanical properties were investigated by Vickers hardness tests at room temperature (RT) and compression tests from RT to 703K in Ar. It is found that (1) the alloy is mainly composed of L1{sub 2}Zn{sub 3}Ti, (2) the alloy has weak positive temperature dependence of strength, and (3) normalized strength by melting point is comparable to that of L1{sub 2}Al{sub 3}Ti-Cr alloys. L1{sub 2}Zn{sub 3}Ti has HV178 and is brittle at RT. Reaction temperatures of Zn-rich portion of the Zn-Ti phase diagram were also reinvestigated and a peritectic-reaction temperature between Zn{sub 3}Ti and liquid + Zn{sub 2}Ti is determined to be at 880K.

• Research Organization: Tohoku Univ., Sendai (JP)
• Sponsoring Organization: Japanese Ministry of Education, Sports and Culture
• OSTI ID: 20001632
• Report Number(s): CONF-981104--; ISBN 1-55899-458-0; ISSN 1067-9995
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COMPRESSION STRENGTH
EXPERIMENTAL DATA
HARDNESS
INTERMETALLIC COMPOUNDS
MICROSCOPY
PHASE STUDIES
TEMPERATURE DEPENDENCE
TITANIUM ALLOYS
X-RAY DIFFRACTION
ZINC ALLOYS