Effect of Si Addition on Martensitic Transformation and Microstructure of NiTiSi Shape Memory Alloys

The effect of Si addition on microstructure and martensitic transformation of the Ni-Ti-Si SMA was investigated in this work. The Ni 49−0.5 x Ti 51−0.5 x Si x alloys with various amounts of silicon (2.1 ≤ × ≤ 21.1 at. pct) were prepared by the self-propagating high-temperature synthesis (SHS). Tempe...

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Veröffentlicht in:	Metallurgical and materials transactions. A, Physical metallurgy and materials science Physical metallurgy and materials science, 2020-09, Vol.51 (9), p.4434-4438
Hauptverfasser:	Salvetr, Pavel, Školáková, Andrea, Novák, Pavel, Vavřík, Jaroslav
Format:	Artikel
Sprache:	eng
Schlagworte:	Characterization and Evaluation of Materials Chemistry and Materials Science Communication Martensitic transformations Materials Science Metallic Materials Microstructure Nanotechnology Phase transitions Self propagating high temperature synthesis Shape effects Shape memory alloys Silicon Structural Materials Surfaces and Interfaces Thin Films
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Zusammenfassung:	The effect of Si addition on microstructure and martensitic transformation of the Ni-Ti-Si SMA was investigated in this work. The Ni 49−0.5 x Ti 51−0.5 x Si x alloys with various amounts of silicon (2.1 ≤ × ≤ 21.1 at. pct) were prepared by the self-propagating high-temperature synthesis (SHS). Temperatures of the phase transformation increase with the increasing amount of silicon in the samples, which also causes the change of the Ti/Ni ratio in the matrix. The temperatures of austenite transformations are around the temperature of 373 K.
ISSN:	1073-5623 1543-1940
DOI:	10.1007/s11661-020-05883-1