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Multi-stage martensitic transformations induced by repeated thermal cycling of equiatomic TiNi alloy. / Resnina, N.; Belyaev, S.

в: Journal of Alloys and Compounds, Том 486, № 1-2, 03.11.2009, стр. 304-308.

Результаты исследований: Научные публикации в периодических изданияхстатьяРецензирование

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Resnina, N. ; Belyaev, S. / Multi-stage martensitic transformations induced by repeated thermal cycling of equiatomic TiNi alloy. в: Journal of Alloys and Compounds. 2009 ; Том 486, № 1-2. стр. 304-308.

BibTeX

@article{ea3e3dcda01240ef89fe656179657e2f,
title = "Multi-stage martensitic transformations induced by repeated thermal cycling of equiatomic TiNi alloy",
abstract = "Usually a multi-stage martensitic transformation is observed in Ni-rich TiNi alloys after heat treatment at 350-500 °C. It is due to the internal stresses created by the Ni4Ti3 participate. In the present work it was found that the multi-stage martensitic transformation appeared in Ti-50.0 at.% Ni alloy after thermal cycles through the temperature range of the phase transitions. Annealed sample undergoing one-stage phase transition was subjected to 32 thermal cycles in the DSC apparatus. The results had shown that three-stage forward martensitic transformation observed after 32 thermal cycle was due to the B2 → R, B2 → B19′ and R → B19′ phase transitions. It was found that the B19′ phase obtained from the B2 phase underwent the reverse transformation at higher temperatures than the B19′ phase obtained from the R phase. After annealing the cycled sample at 400 °C the transformation behavior was similar to the non-thermal cycled alloy. It was concluded that the main reason for the multi-stage phase transition induced by the thermal cycles was the phase hardening.",
keywords = "Calorimetry, Metals and alloys, Phase transitions",
author = "N. Resnina and S. Belyaev",
year = "2009",
month = nov,
day = "3",
doi = "10.1016/j.jallcom.2009.06.132",
language = "English",
volume = "486",
pages = "304--308",
journal = "Journal of Alloys and Compounds",
issn = "0925-8388",
publisher = "Elsevier",
number = "1-2",

}

RIS

TY - JOUR

T1 - Multi-stage martensitic transformations induced by repeated thermal cycling of equiatomic TiNi alloy

AU - Resnina, N.

AU - Belyaev, S.

PY - 2009/11/3

Y1 - 2009/11/3

N2 - Usually a multi-stage martensitic transformation is observed in Ni-rich TiNi alloys after heat treatment at 350-500 °C. It is due to the internal stresses created by the Ni4Ti3 participate. In the present work it was found that the multi-stage martensitic transformation appeared in Ti-50.0 at.% Ni alloy after thermal cycles through the temperature range of the phase transitions. Annealed sample undergoing one-stage phase transition was subjected to 32 thermal cycles in the DSC apparatus. The results had shown that three-stage forward martensitic transformation observed after 32 thermal cycle was due to the B2 → R, B2 → B19′ and R → B19′ phase transitions. It was found that the B19′ phase obtained from the B2 phase underwent the reverse transformation at higher temperatures than the B19′ phase obtained from the R phase. After annealing the cycled sample at 400 °C the transformation behavior was similar to the non-thermal cycled alloy. It was concluded that the main reason for the multi-stage phase transition induced by the thermal cycles was the phase hardening.

AB - Usually a multi-stage martensitic transformation is observed in Ni-rich TiNi alloys after heat treatment at 350-500 °C. It is due to the internal stresses created by the Ni4Ti3 participate. In the present work it was found that the multi-stage martensitic transformation appeared in Ti-50.0 at.% Ni alloy after thermal cycles through the temperature range of the phase transitions. Annealed sample undergoing one-stage phase transition was subjected to 32 thermal cycles in the DSC apparatus. The results had shown that three-stage forward martensitic transformation observed after 32 thermal cycle was due to the B2 → R, B2 → B19′ and R → B19′ phase transitions. It was found that the B19′ phase obtained from the B2 phase underwent the reverse transformation at higher temperatures than the B19′ phase obtained from the R phase. After annealing the cycled sample at 400 °C the transformation behavior was similar to the non-thermal cycled alloy. It was concluded that the main reason for the multi-stage phase transition induced by the thermal cycles was the phase hardening.

KW - Calorimetry

KW - Metals and alloys

KW - Phase transitions

UR - http://www.scopus.com/inward/record.url?scp=70350090828&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2009.06.132

DO - 10.1016/j.jallcom.2009.06.132

M3 - Article

AN - SCOPUS:70350090828

VL - 486

SP - 304

EP - 308

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

IS - 1-2

ER -

ID: 35628350