skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Highly mobile type II twin boundary in Ni-Mn-Ga five-layered martensite

Abstract

Twin relationships and stress-induced reorientation were studied in Ni{sub 2}Mn{sub 1.14}Ga{sub 0.86} single crystal with five-layered modulated martensite crystal structure. Very low twinning stress of about 0.1 MPa was found for twin boundaries which deviated a few degrees from the (011) crystallographic plane. However, twin boundaries oriented exactly parallel to the (011) plane exhibited considerably higher level of twinning stress, above 1 MPa. X-ray diffraction experiments and calculations based on approximation of the martensite crystal lattice as a tetragonal lattice with a slight monoclinic distortion identified the two different kinds of twin interfaces as type II and type I twin boundaries.

Authors:
; ;  [1];  [2]
  1. AdaptaMat Ltd., Yrityspiha 5, Helsinki FIN-00390 (Finland)
  2. School of Science and Technology, Laboratory of Engineering Materials, Aalto University, PL 14200, FIN-00076 AALTO (Finland)
Publication Date:
OSTI Identifier:
22027748
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 99; Journal Issue: 12; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; APPROXIMATIONS; GALLIUM ALLOYS; INTERFACES; MANGANESE ALLOYS; MARTENSITE; MARTENSITIC STEELS; MONOCLINIC LATTICES; MONOCRYSTALS; NICKEL ALLOYS; PRESSURE RANGE MEGA PA; STRESSES; TETRAGONAL LATTICES; TWINNING; X-RAY DIFFRACTION

Citation Formats

Sozinov, A., Lanska, N., Soroka, A., and Straka, L. Highly mobile type II twin boundary in Ni-Mn-Ga five-layered martensite. United States: N. p., 2011. Web. doi:10.1063/1.3640489.
Sozinov, A., Lanska, N., Soroka, A., & Straka, L. Highly mobile type II twin boundary in Ni-Mn-Ga five-layered martensite. United States. doi:10.1063/1.3640489.
Sozinov, A., Lanska, N., Soroka, A., and Straka, L. Mon . "Highly mobile type II twin boundary in Ni-Mn-Ga five-layered martensite". United States. doi:10.1063/1.3640489.
@article{osti_22027748,
title = {Highly mobile type II twin boundary in Ni-Mn-Ga five-layered martensite},
author = {Sozinov, A. and Lanska, N. and Soroka, A. and Straka, L.},
abstractNote = {Twin relationships and stress-induced reorientation were studied in Ni{sub 2}Mn{sub 1.14}Ga{sub 0.86} single crystal with five-layered modulated martensite crystal structure. Very low twinning stress of about 0.1 MPa was found for twin boundaries which deviated a few degrees from the (011) crystallographic plane. However, twin boundaries oriented exactly parallel to the (011) plane exhibited considerably higher level of twinning stress, above 1 MPa. X-ray diffraction experiments and calculations based on approximation of the martensite crystal lattice as a tetragonal lattice with a slight monoclinic distortion identified the two different kinds of twin interfaces as type II and type I twin boundaries.},
doi = {10.1063/1.3640489},
journal = {Applied Physics Letters},
issn = {0003-6951},
number = 12,
volume = 99,
place = {United States},
year = {2011},
month = {9}
}