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- TiAl.pdf (3.3M) 0회 다운로드 DATE : 2020-07-02 09:35:23
|업적||Collapse of lamellar structure and stability with the addition of Misc…|
Misch metal (Mm), consisting of Ce and La, was added to Ti–45Al–3Mo–2Nb
alloys in order to investigate phase transformation and microstructural changes.
The pseudo-binary phase diagram was estimated via PANDAT softwareTM. The
addition of Mm caused a decrease in both the fractions of a2/c lamella and the
b0 phase, and served as an important factor for a collapse of lamellar structures.
In addition, Mm significantly decreased the colony size of the alloy, resulting in
an increase in high-temperature tensile yield strength of * 40% for the alloys
with 0.3 at% Mm at 800 C. It appears that the addition of Mm affects the phase
stability and increase the proportion of the c phase. The microstructural changes,
with respect to Mm additions, were discussed in terms of structural
observations during isothermal heat treatments.
|게재지명||J Mater Sci (2018) 53:12504–12511|