The three-stage B2-R-B19-B19′ and shape memory characteristics in Ti-Ni-Cu-Fe alloys

Cheol am Yu; Gyu bong Cho; Tae yeon Kim; Yun jung Lee; Tae hyun Nam

doi:10.1016/j.msea.2006.02.160

The three-stage B2-R-B19-B19′ and shape memory characteristics in Ti-Ni-Cu-Fe alloys

Cheol am Yu, Gyu bong Cho, Tae yeon Kim, Yun jung Lee, Tae hyun Nam

School of Electronics Engineering

Gyeongsang National University

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

Transformation behavior of Ti-(45.0 - x)Ni-5.0Cu-xFe (at.%) (x = 1.0-2.5) alloys were investigated by means of electrical resistivity measurements and X-ray diffraction. The one-stage B2-B19′ transformation occurred in a Ti-44.0Ni-5.0Cu-1.0Fe alloy, while the two-stage B2-B19-B19′ transformation occurred in a Ti-43.5Ni-5.0Cu-1.5Fe alloy. The three-stage B2-R-B19-B19′ transformation behavior was found in Ti-43.3Ni-5.0Cu-2.0Fe and Ti-43.0Ni-5.0Cu-2.5Fe alloys. The Fe content dependence of T_R(the B2-R transformation start temperature), M^′_s (the R-B19 transformation start temperature) and M_s (the B19-B19′ transformation start temperature) were 100, 80 and 20 K/at.%Fe, respectively.

Original language	English
Pages (from-to)	500-503
Number of pages	4
Journal	Materials Science and Engineering: A
Volume	438-440
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.msea.2006.02.160
State	Published - 25 Nov 2006

Keywords

Three-stage B2-R-B19-B19′ transformation
Ti-Ni-Cu-Fe alloys
Transformation behavior
Transformation temperatures

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10.1016/j.msea.2006.02.160

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title = "The three-stage B2-R-B19-B19′ and shape memory characteristics in Ti-Ni-Cu-Fe alloys",

abstract = "Transformation behavior of Ti-(45.0 - x)Ni-5.0Cu-xFe (at.%) (x = 1.0-2.5) alloys were investigated by means of electrical resistivity measurements and X-ray diffraction. The one-stage B2-B19′ transformation occurred in a Ti-44.0Ni-5.0Cu-1.0Fe alloy, while the two-stage B2-B19-B19′ transformation occurred in a Ti-43.5Ni-5.0Cu-1.5Fe alloy. The three-stage B2-R-B19-B19′ transformation behavior was found in Ti-43.3Ni-5.0Cu-2.0Fe and Ti-43.0Ni-5.0Cu-2.5Fe alloys. The Fe content dependence of TR(the B2-R transformation start temperature), M′s (the R-B19 transformation start temperature) and Ms (the B19-B19′ transformation start temperature) were 100, 80 and 20 K/at.%Fe, respectively.",

keywords = "Three-stage B2-R-B19-B19′ transformation, Ti-Ni-Cu-Fe alloys, Transformation behavior, Transformation temperatures",

author = "Yu, {Cheol am} and Cho, {Gyu bong} and Kim, {Tae yeon} and Lee, {Yun jung} and Nam, {Tae hyun}",

year = "2006",

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doi = "10.1016/j.msea.2006.02.160",

language = "English",

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T1 - The three-stage B2-R-B19-B19′ and shape memory characteristics in Ti-Ni-Cu-Fe alloys

AU - Yu, Cheol am

AU - Cho, Gyu bong

AU - Kim, Tae yeon

AU - Lee, Yun jung

AU - Nam, Tae hyun

PY - 2006/11/25

Y1 - 2006/11/25

N2 - Transformation behavior of Ti-(45.0 - x)Ni-5.0Cu-xFe (at.%) (x = 1.0-2.5) alloys were investigated by means of electrical resistivity measurements and X-ray diffraction. The one-stage B2-B19′ transformation occurred in a Ti-44.0Ni-5.0Cu-1.0Fe alloy, while the two-stage B2-B19-B19′ transformation occurred in a Ti-43.5Ni-5.0Cu-1.5Fe alloy. The three-stage B2-R-B19-B19′ transformation behavior was found in Ti-43.3Ni-5.0Cu-2.0Fe and Ti-43.0Ni-5.0Cu-2.5Fe alloys. The Fe content dependence of TR(the B2-R transformation start temperature), M′s (the R-B19 transformation start temperature) and Ms (the B19-B19′ transformation start temperature) were 100, 80 and 20 K/at.%Fe, respectively.

AB - Transformation behavior of Ti-(45.0 - x)Ni-5.0Cu-xFe (at.%) (x = 1.0-2.5) alloys were investigated by means of electrical resistivity measurements and X-ray diffraction. The one-stage B2-B19′ transformation occurred in a Ti-44.0Ni-5.0Cu-1.0Fe alloy, while the two-stage B2-B19-B19′ transformation occurred in a Ti-43.5Ni-5.0Cu-1.5Fe alloy. The three-stage B2-R-B19-B19′ transformation behavior was found in Ti-43.3Ni-5.0Cu-2.0Fe and Ti-43.0Ni-5.0Cu-2.5Fe alloys. The Fe content dependence of TR(the B2-R transformation start temperature), M′s (the R-B19 transformation start temperature) and Ms (the B19-B19′ transformation start temperature) were 100, 80 and 20 K/at.%Fe, respectively.

KW - Three-stage B2-R-B19-B19′ transformation

KW - Ti-Ni-Cu-Fe alloys

KW - Transformation behavior

KW - Transformation temperatures

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U2 - 10.1016/j.msea.2006.02.160

DO - 10.1016/j.msea.2006.02.160

M3 - Article

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SN - 0921-5093

VL - 438-440

SP - 500

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JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

IS - SPEC. ISS.

ER -

The three-stage B2-R-B19-B19′ and shape memory characteristics in Ti-Ni-Cu-Fe alloys

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