Precipitation-strengthened austenitic Fe--Mn--Ti alloys

Technical Report · Wed Jun 01 00:00:00 EDT 1977

DOI:https://doi.org/10.2172/7301188· OSTI ID:7301188

Chang, K M

The precipitation of the intermetallic compounds in the Fe-20 Mn-2 Ti and Fe-28 Mn-2 Ti alloy systems has been investigated over the temperature range 700 to 900/sup 0/C using hardness measurements, optical and scanning electron microscopy, and x-ray diffraction. In both systems only the equilbrium Laves phase was found to form during the ausaging process; no transition phase was observed. The precipitate was identified as a C14 (MgZn/sub 2/) type hexagonal Laves phase with a chemical composition close to Fe/sub 2/(Ti,Mn). The precipitation in an as-solution-treated sample occurred predominantly in a heterogeneous manner, predominantly along grain boundaries.

• Research Organization: California Univ., Berkeley (USA). Lawrence Berkeley Lab.
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 7301188
• Report Number(s): LBL-6278
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
360103 -- Metals & Alloys-- Mechanical Properties
ALLOYS
HIGH TEMPERATURE
INTERMETALLIC COMPOUNDS
IRON ALLOYS
IRON BASE ALLOYS
LAVES PHASES
MANGANESE ALLOYS
PRECIPITATION
SEPARATION PROCESSES
TITANIUM ALLOYS