Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/82846
Title: Comparative Electron-Microscopic Study of Shape Memory Alloys of Systems Cu-Ni-Al and Ni-Mn-Al
Authors: Svirid, A. E.
Belosludtseva, E. S.
Pushin, A. V.
Pushin, V. G.
Issue Date: 2019
Publisher: Knowledge E
Citation: Comparative Electron-Microscopic Study of Shape Memory Alloys of Systems Cu-Ni-Al and Ni-Mn-Al / A. E. Svirid, E. S. Belosludtseva, A. V. Pushin, V. G. Pushin // XIX International scientific-technical conference “The Ural school-seminar of metal scientists-young researchers” (Ekaterinburg, Russia, 19-23 December, 2018). – Dubai : Knowledge E, 2019. – KnE Engineering, 4 (1). – pp. 215-222. – DOI 10.18502/keg.v1i1.4412
Abstract: Thermoelastic martensitic transformations (TMTs) were observed in many binary and multicomponent intermetallic atomic-ordered alloys based on titanium, nickel, and copper: Ti-Ni, Ni-Mn, Ni-Al, Cu-Al, Ti-Ni-Me, Ni-Mn -Me, Ni-Al-Me, Cu-Al-Me and others [1-13]. Doping with third chemical elements allows one to control their critical temperatures Ms, Mf, As, Af and to design alloys with specified TMT parameters. At the same time, many aspects of the effect of doping on the features of TMT and the mechanisms of destruction in such alloys remain unexplored. The most important problem that impedes the practical application of many polycrystalline alloys based on most intermetallic compounds is their relatively low strength, plastic and fatigue characteristics and their tendency to brittle fracture. Thus, polycrystalline Cu-Ni-Al and Ni-Mn-Al alloys experience brittle intercrystalline failure after deformation by 2-3%. The main reasons for this destruction include: a very large elastic anisotropy of their metastable austenite; large grain sizes; the presence of grain-boundary segregations and precipitates of embrittling phases.
Keywords: THERMOELASTIC MARTENSITIC TRANSFORMATION
BRITTLENESS
FRACTOGRAPHY
LONGPERIOD LATTICE
ELECTRON-MICROSCOPIC STUDIES
URI: http://hdl.handle.net/10995/82846
Access: Creative Commons Attribution License
License text: https://creativecommons.org/licenses/by/4.0/
Conference name: XIX International scientific-technical conference “The Ural school-seminar of metal scientists-young researchers”
Conference date: 19.11.2018-23.11.2018
ISSN: 2518-6841
DOI: 10.18502/keg.v1i1.4412
metadata.dc.description.sponsorship: The work was carried out within the framework of the state task of Russian Ministry of Education and Science (cipher ”Structure”, No. AAAA-A18-18020190116-6) and with partial support of the RFBR (project No. 18-32-00529 mol_a).
Origin: XIX International scientific-technical conference “The Ural school-seminar of metal scientists-young researchers”. — Ekaterinburg, 2019
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