Combination and interface structure of 9R martensite plate variants in Ti50.0Pd43.0Fe7.0 shape memory alloy

Sei Ichiro Ii; Minoru Nishida; Toru Hara; Kazuyuki Enami

doi:10.2320/matertrans.43.902

Combination and interface structure of 9R martensite plate variants in Ti_50.0Pd_43.0Fe_7.0 shape memory alloy

Sei Ichiro Ii, Minoru Nishida, Toru Hara, Kazuyuki Enami

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

The combination of 9R martensite plate variants in Ti_50.0Pd_43.0Fe_7.0 shape memory alloy has been investigated by conventional transmission electron microscopy (CTEM). Three fundamental combinations of plate variants are identified in the plate group. These are designated as A:B, A:C and A:D types, which correspond to 〈5̄91〉_9R Type II, {114̄}_9R Type I and {105}_9R compound twins, respectively. They show the same morphological characteristics of 9R and 18R martensite in Cu-base shape memory alloys, i.e., wedge, spear and fork (or kink) types. The Type II and compound twins are new findings. Irrational nature of the A:B interface is also studied in the edge-on state by high resolution electron microscopy (HREM). The boundary is gradually and randomly curved with strain contrast.

Original language	English
Pages (from-to)	902-907
Number of pages	6
Journal	Materials Transactions
Volume	43
Issue number	5
DOIs	https://doi.org/10.2320/matertrans.43.902
Publication status	Published - May 2002
Externally published	Yes

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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title = "Combination and interface structure of 9R martensite plate variants in Ti50.0Pd43.0Fe7.0 shape memory alloy",

abstract = "The combination of 9R martensite plate variants in Ti50.0Pd43.0Fe7.0 shape memory alloy has been investigated by conventional transmission electron microscopy (CTEM). Three fundamental combinations of plate variants are identified in the plate group. These are designated as A:B, A:C and A:D types, which correspond to 〈{\=5}91〉9R Type II, {11{\=4}}9R Type I and {105}9R compound twins, respectively. They show the same morphological characteristics of 9R and 18R martensite in Cu-base shape memory alloys, i.e., wedge, spear and fork (or kink) types. The Type II and compound twins are new findings. Irrational nature of the A:B interface is also studied in the edge-on state by high resolution electron microscopy (HREM). The boundary is gradually and randomly curved with strain contrast.",

author = "Ii, {Sei Ichiro} and Minoru Nishida and Toru Hara and Kazuyuki Enami",

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AU - Ii, Sei Ichiro

AU - Nishida, Minoru

AU - Hara, Toru

AU - Enami, Kazuyuki

PY - 2002/5

Y1 - 2002/5

N2 - The combination of 9R martensite plate variants in Ti50.0Pd43.0Fe7.0 shape memory alloy has been investigated by conventional transmission electron microscopy (CTEM). Three fundamental combinations of plate variants are identified in the plate group. These are designated as A:B, A:C and A:D types, which correspond to 〈5̄91〉9R Type II, {114̄}9R Type I and {105}9R compound twins, respectively. They show the same morphological characteristics of 9R and 18R martensite in Cu-base shape memory alloys, i.e., wedge, spear and fork (or kink) types. The Type II and compound twins are new findings. Irrational nature of the A:B interface is also studied in the edge-on state by high resolution electron microscopy (HREM). The boundary is gradually and randomly curved with strain contrast.

AB - The combination of 9R martensite plate variants in Ti50.0Pd43.0Fe7.0 shape memory alloy has been investigated by conventional transmission electron microscopy (CTEM). Three fundamental combinations of plate variants are identified in the plate group. These are designated as A:B, A:C and A:D types, which correspond to 〈5̄91〉9R Type II, {114̄}9R Type I and {105}9R compound twins, respectively. They show the same morphological characteristics of 9R and 18R martensite in Cu-base shape memory alloys, i.e., wedge, spear and fork (or kink) types. The Type II and compound twins are new findings. Irrational nature of the A:B interface is also studied 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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Combination and interface structure of 9R martensite plate variants in Ti_50.0Pd_43.0Fe_7.0 shape memory alloy

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