Quantitative microstructure analyses upon multistage martensitic transformation in an aged Ti-50.8 at.% Ni alloy

B. Karbakhsh Ravari, N. Kizakibaru, M. Nishida

研究成果: ジャーナルへの寄稿記事

5 引用 (Scopus)

抄録

Quantitative microstructure analyses upon multistage martensitic transformation (MMT) in an aged Ti-50.8 at.% Ni alloy have been performed by differential scanning calorimetry (DSC), scanning electron microscopy (SEM), electron back scattered diffraction (EBSD) and transmission electron microscopy (TEM). The alloy used was heat-treated at 1273 K for 3.6 ks and then aged at 773 K for 3.6 ks under regulated and unregulated atmospheres. The specimen heat-treated under the regulated atmosphere shows the single stage martensitic transformation in addition to the R-phase transformation. That is, B2 → R → M. On the other hand, the specimen heat-treated under the unregulated atmosphere shows the MMT with the sequence of B2 → R → M1 → M2 → M3. There are three exothermic peaks related to the martensitic transformation in addition to the R-phase transformation peak. The R-phase transformation takes place at the intermediate part of grains and around the grain boundaries. Subsequently, the first (M1) and second (M2) martensitic transformations occur at the intermediate part of grains and around the grain boundaries, respectively. Finally, the third transformation (M3) appears at the center part of grains directly from the B2 phase without via the R-phase transformation. The proposed transformation sequence is quantitatively proved by comparing the EBSD image with DSC curve.

元の言語英語
ページ(範囲)S268-S273
ジャーナルJournal of Alloys and Compounds
577
発行部数SUPPL. 1
DOI
出版物ステータス出版済み - 11 15 2013

Fingerprint

Martensitic transformations
Microstructure
Phase transitions
Differential scanning calorimetry
Grain boundaries
Diffraction
Electrons
Transmission electron microscopy
Scanning electron microscopy
Hot Temperature

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

これを引用

Quantitative microstructure analyses upon multistage martensitic transformation in an aged Ti-50.8 at.% Ni alloy. / Karbakhsh Ravari, B.; Kizakibaru, N.; Nishida, M.

:: Journal of Alloys and Compounds, 巻 577, 番号 SUPPL. 1, 15.11.2013, p. S268-S273.

研究成果: ジャーナルへの寄稿記事

@article{6b9dfcbe7ad54ace818efea2af915434,
title = "Quantitative microstructure analyses upon multistage martensitic transformation in an aged Ti-50.8 at.{\%} Ni alloy",
abstract = "Quantitative microstructure analyses upon multistage martensitic transformation (MMT) in an aged Ti-50.8 at.{\%} Ni alloy have been performed by differential scanning calorimetry (DSC), scanning electron microscopy (SEM), electron back scattered diffraction (EBSD) and transmission electron microscopy (TEM). The alloy used was heat-treated at 1273 K for 3.6 ks and then aged at 773 K for 3.6 ks under regulated and unregulated atmospheres. The specimen heat-treated under the regulated atmosphere shows the single stage martensitic transformation in addition to the R-phase transformation. That is, B2 → R → M. On the other hand, the specimen heat-treated under the unregulated atmosphere shows the MMT with the sequence of B2 → R → M1 → M2 → M3. There are three exothermic peaks related to the martensitic transformation in addition to the R-phase transformation peak. The R-phase transformation takes place at the intermediate part of grains and around the grain boundaries. Subsequently, the first (M1) and second (M2) martensitic transformations occur at the intermediate part of grains and around the grain boundaries, respectively. Finally, the third transformation (M3) appears at the center part of grains directly from the B2 phase without via the R-phase transformation. The proposed transformation sequence is quantitatively proved by comparing the EBSD image with DSC curve.",
author = "{Karbakhsh Ravari}, B. and N. Kizakibaru and M. Nishida",
year = "2013",
month = "11",
day = "15",
doi = "10.1016/j.jallcom.2012.03.041",
language = "English",
volume = "577",
pages = "S268--S273",
journal = "Journal of Alloys and Compounds",
issn = "0925-8388",
publisher = "Elsevier BV",
number = "SUPPL. 1",

}

TY - JOUR

T1 - Quantitative microstructure analyses upon multistage martensitic transformation in an aged Ti-50.8 at.% Ni alloy

AU - Karbakhsh Ravari, B.

AU - Kizakibaru, N.

AU - Nishida, M.

PY - 2013/11/15

Y1 - 2013/11/15

N2 - Quantitative microstructure analyses upon multistage martensitic transformation (MMT) in an aged Ti-50.8 at.% Ni alloy have been performed by differential scanning calorimetry (DSC), scanning electron microscopy (SEM), electron back scattered diffraction (EBSD) and transmission electron microscopy (TEM). The alloy used was heat-treated at 1273 K for 3.6 ks and then aged at 773 K for 3.6 ks under regulated and unregulated atmospheres. The specimen heat-treated under the regulated atmosphere shows the single stage martensitic transformation in addition to the R-phase transformation. That is, B2 → R → M. On the other hand, the specimen heat-treated under the unregulated atmosphere shows the MMT with the sequence of B2 → R → M1 → M2 → M3. There are three exothermic peaks related to the martensitic transformation in addition to the R-phase transformation peak. The R-phase transformation takes place at the intermediate part of grains and around the grain boundaries. Subsequently, the first (M1) and second (M2) martensitic transformations occur at the intermediate part of grains and around the grain boundaries, respectively. Finally, the third transformation (M3) appears at the center part of grains directly from the B2 phase without via the R-phase transformation. The proposed transformation sequence is quantitatively proved by comparing the EBSD image with DSC curve.

AB - Quantitative microstructure analyses upon multistage martensitic transformation (MMT) in an aged Ti-50.8 at.% Ni alloy have been performed by differential scanning calorimetry (DSC), scanning electron microscopy (SEM), electron back scattered diffraction (EBSD) and transmission electron microscopy (TEM). The alloy used was heat-treated at 1273 K for 3.6 ks and then aged at 773 K for 3.6 ks under regulated and unregulated atmospheres. The specimen heat-treated under the regulated atmosphere shows the single stage martensitic transformation in addition to the R-phase transformation. That is, B2 → R → M. On the other hand, the specimen heat-treated under the unregulated atmosphere shows the MMT with the sequence of B2 → R → M1 → M2 → M3. There are three exothermic peaks related to the martensitic transformation in addition to the R-phase transformation peak. The R-phase transformation takes place at the intermediate part of grains and around the grain boundaries. Subsequently, the first (M1) and second (M2) martensitic transformations occur at the intermediate part of grains and around the grain boundaries, respectively. Finally, the third transformation (M3) appears at the center part of grains directly from the B2 phase without via the R-phase transformation. The proposed transformation sequence is quantitatively proved by comparing the EBSD image with DSC curve.

UR - http://www.scopus.com/inward/record.url?scp=84891630211&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84891630211&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2012.03.041

DO - 10.1016/j.jallcom.2012.03.041

M3 - Article

AN - SCOPUS:84891630211

VL - 577

SP - S268-S273

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

IS - SUPPL. 1

ER -