TY - JOUR
T1 - Formation of microstructures in the molybdenum-aluminum-titanium ternary system through eutectoid decomposition
AU - Nino, Rikiya
AU - Miura, Seiji
AU - Mohri, Tetsuo
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 1999
Y1 - 1999
N2 - Formation and evolution processes of microstructure of Mo-Al alloys retarded by addition of 10 at% Ti are studied through various heat treatments. Fine acicular Mo3Al precipitates are observed inside a grain for a specimen quenched at 1673 K as an initial stage of the eutectoid decomposition of bcc phase. It suggests that there is a crystallographic orientation relationship between the bcc matrix and A15 precipitates. By changing heat treatment conditions, fraction of fine lamellar structure decreases and spheroidized area increases. Subsequent aging treatment at lower temperature also provides the spheroidized structure. A coarse equiaxed structure is observed for a specimen quenched at 1673 K then aged at 1173 K.
AB - Formation and evolution processes of microstructure of Mo-Al alloys retarded by addition of 10 at% Ti are studied through various heat treatments. Fine acicular Mo3Al precipitates are observed inside a grain for a specimen quenched at 1673 K as an initial stage of the eutectoid decomposition of bcc phase. It suggests that there is a crystallographic orientation relationship between the bcc matrix and A15 precipitates. By changing heat treatment conditions, fraction of fine lamellar structure decreases and spheroidized area increases. Subsequent aging treatment at lower temperature also provides the spheroidized structure. A coarse equiaxed structure is observed for a specimen quenched at 1673 K then aged at 1173 K.
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U2 - 10.2320/matertrans1989.40.935
DO - 10.2320/matertrans1989.40.935
M3 - Article
AN - SCOPUS:0033357386
VL - 40
SP - 935
EP - 937
JO - Materials Transactions
JF - Materials Transactions
SN - 1345-9678
IS - 9
ER -