Microstructure and mechanical properties of the ultrafine-grained TiNi alloy after multiple martensitic transformations and subsequent aging

In this paper, we investigate the effect of preliminary thermal cycling in the temperature range of martensitic transformation on the aging processes in the ultrafine-grained Ti49.0Ni51.0 alloy, using as an example the examination of the microstructure, mechanical properties and fractography. Our st...

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Bibliographic Details
Published inIOP conference series. Materials Science and Engineering Vol. 672; no. 1; pp. 12025 - 12028
Main Authors Churakova, A A, Gunderov, D V
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.11.2019
Subjects
Aging
Aging (metallurgy)
Dislocation density
Intermetallic compounds
Martensitic transformations
Mechanical properties
Microstructure
Nickel base alloys
Nickel compounds
Shape memory alloys
Thermal cycling
Titanium compounds
Ultrafines
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Summary:In this paper, we investigate the effect of preliminary thermal cycling in the temperature range of martensitic transformation on the aging processes in the ultrafine-grained Ti49.0Ni51.0 alloy, using as an example the examination of the microstructure, mechanical properties and fractography. Our studies show that preliminary thermal cycling leads to a significant increase in the density of dislocations that promote the intensification of the aging process and thereby enhance the strength and functional characteristics of the TiNi alloy in the ultrafine-grained state.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/672/1/012025