TY - JOUR
T1 - Crystallography and morphology of twins in 9R martensite in Ti-Pd-Fe shape memory alloy
AU - Ii, S.
AU - Nishida, M.
AU - Hara, T.
N1 - Funding Information:
This work was partly supported by the Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sports, and Culture, Japan under the project number 12650700.
PY - 2002/4
Y1 - 2002/4
N2 - Twins in 9R martensite in Ti50.0Pd43.0Fe7.0 shape memory alloy are investigated by conventional transmission electron microscopy. There are four twinning modes, i.e., {114}9R Type I, 〈591〉9R Type II, {105}9R compound and {001}9R compound twins. The {114}9R Type I and the 〈591〉9R Type II twins are considered to be lattice invariant shear in the 9R martensite continuously coexisting with 2H martensite. On the other hand, those two twins and {105}9R compound twin can be regarded as variant accommodation twins in the region only consisting of the 9R martensite. Irrational nature of Type II twin boundary, i.e., A:B type pair, is also observed in the edge-on state by high resolution electron microscopy (HREM). The boundary is gradually and randomly curved with strain contrast.
AB - Twins in 9R martensite in Ti50.0Pd43.0Fe7.0 shape memory alloy are investigated by conventional transmission electron microscopy. There are four twinning modes, i.e., {114}9R Type I, 〈591〉9R Type II, {105}9R compound and {001}9R compound twins. The {114}9R Type I and the 〈591〉9R Type II twins are considered to be lattice invariant shear in the 9R martensite continuously coexisting with 2H martensite. On the other hand, those two twins and {105}9R compound twin can be regarded as variant accommodation twins in the region only consisting of the 9R martensite. Irrational nature of Type II twin boundary, i.e., A:B type pair, is also observed in the edge-on state by high resolution electron microscopy (HREM). The boundary is gradually and randomly curved with strain contrast.
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U2 - 10.1016/S1359-6462(01)01238-6
DO - 10.1016/S1359-6462(01)01238-6
M3 - Article
AN - SCOPUS:0036533689
VL - 46
SP - 549
EP - 554
JO - Scripta Materialia
JF - Scripta Materialia
SN - 1359-6462
IS - 7
ER -