Nanoscale twinning in Fe-Mn-Al-Ni martensite: a backscatter Kikuchi diffraction study

被引：11

作者：

Fischer, Peter D. B. ^{[1
]}

Martin, Stefan ^{[1
]}

Walnsch, Alexander ^{[1
]}

Thuemmler, Martin ^{[1
]}

Kriegel, Mario J. ^{[1
]}

Leineweber, Andreas ^{[1
]}

机构：

[1] TU Bergakad Freiberg, Inst Mat Sci, Gustav Zeuner Str 5, D-09599 Freiberg, Germany

来源：

JOURNAL OF APPLIED CRYSTALLOGRAPHY | 2021年 / 54卷

关键词：

electron backscatter diffraction; martensite; shape-memory alloys; twinning; backscatter Kikuchi diffraction;

D O I：

10.1107/S1600576720013631

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Iron-based Fe-Mn-Al-Ni shape-memory alloys are of rather low materials cost and show remarkable pseudoelastic properties. To further understand the martensitic transformation giving rise to the pseudoelastic properties, different Fe-Mn-Al-Ni alloys have been heat treated at 1473 K and quenched in ice water. The martensite, which is formed from a body-centred cubic austenite, is commonly described as face-centered cubic (f.c.c.), even though there are also more complex, polytypical descriptions of martensite. The presently studied backscatter Kikuchi diffraction (BKD) patterns have been evaluated, showing a structure more complex than simple f.c.c. This structure can be described by nanoscale twins, diffracting simultaneously in the exciting volume. The twinned structure shows a tetragonal distortion, not uncommon for martensite in spite of the lack of interstitial elements. These features are evaluated by comparing the measured BKD patterns with dynamically simulated ones.

引用

页码：54 / 61

页数：8

共 26 条

[1]

[Anonymous], 2016, INT TABLES CRYSTALLO, DOI DOI 10.1107/97809553602060000114

[2] Understanding deformation with high angular resolution electron backscatter diffraction (HR-EBSD) [J].

Britton, T. B. ;

Hickey, J. L. R. .

EMAS 2017 WORKSHOP - 15TH EUROPEAN WORKSHOP ON MODERN DEVELOPMENTS AND APPLICATIONS IN MICROBEAM ANALYSIS & IUMAS-7 MEETING - 7TH MEETING OF THE INTERNATIONAL UNION OF MICROBEAM ANALYSIS SOCIETIES, 2018, 304

[3] AstroEBSD: exploring new space in pattern indexing with methods launched from an astronomical approach [J].

Britton, Thomas Benjamin ;

Tong, Vivian S. ;

Hickey, Jim ;

Foden, Alex ;

Wilkinson, Angus J. .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 2018, 51 :1525-1534

[4] TETRAGONAL MARTENSITES IN FERROUS-ALLOYS - A CRITIQUE [J].

CHRISTIAN, JW .

MATERIALS TRANSACTIONS JIM, 1992, 33 (03) :208-214

[5]

EDAX, 2017, TSL OIM AN V7

[6]

Fischer P., 2019, EXPT CODE PARTIAL RE

[7] Effects of B2 nanoprecipitates on the phase stability and pseudoelastic behavior of Fe-Mn-Al-Ni shape memory alloys [J].

La Roca, P. ;

Medina, J. ;

Sobrero, C. E. ;

Avalos, M. ;

Malarria, J. A. ;

Baruj, A. ;

Sade, M. .

ESOMAT 2015 - 10TH EUROPEAN SYMPOSIUM ON MARTENSITIC TRANSFORMATIONS, 2015, 33

[8] Crystallographic orientation relationships in the α→γ′ martensitic transformation in an Fe-Mn-Al-Ni system [J].

Manuel Vallejos, Juan ;

Enrique Sobrero, Cesar ;

Avalos, Martina ;

Walter Signorelli, Javier ;

Alberto Malarria, Jorge .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 2018, 51 :990-997

[9] Effect of grain size on superelasticity in Fe-Mn-Al-Ni shape memory alloy wire [J].

Omori, T. ;

Okano, M. ;

Kainuma, R. .

APL MATERIALS, 2013, 1 (03)

[10] Microstructure and martensitic transformation in the Fe-Mn-Al-Ni shape memory alloy with B2-type coherent fine particles [J].

Omori, T. ;

Nagasako, M. ;

Okano, M. ;

Endo, K. ;

Kainuma, R. .

APPLIED PHYSICS LETTERS, 2012, 101 (23)

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