Influence of quenching temperature on martensitic transformation and magnetism of Co40.5Ni34Al25.5 alloy

Fenghua Luo; Jiaya Chen; Yuqiang Tao; Katsunari Oikawa; Kiyohito Ishida

Influence of quenching temperature on martensitic transformation and magnetism of Co_40.5Ni₃₄Al_25.5 alloy

Fenghua Luo, Jiaya Chen, Yuqiang Tao, Katsunari Oikawa, Kiyohito Ishida

ENG - Metallurgy

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

1 Citation (Scopus)

Abstract

The relationship of martensitic transformation and magnetism to quenching temperature was investigated for Co_40.5Ni₃₄Al_25.5 alloy by optical micrography, DSC and VSM methods. Its shape memory effects were measured by three-point bending tests. It is found that the martensitic transformation temperatures and Curie points of Co_40.5Ni₃₄Al_25.5 alloy are proportional to the quenching temperatures. The martensitic transformation temperatures, M_s, M_f, A_s and A_f, changed almost to be parallel with the quenching temperature, and increased by 8°C~9°C when the quenching temperature elevated for 10°C due to the decreasing of Al concentration in the β phase. The flexural strength was 450 MPa for Co_40.5Ni₃₄Al_25.5 alloy quenched from 1320°C. It is indicated by bending test that the Co_40.5Ni₃₄Al_25.5 alloy has a good shape memory effect of double directions.

Original language	English
Pages (from-to)	917-920
Number of pages	4
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	35
Issue number	6
Publication status	Published - 2006 Jun

Keywords

Co-Ni-Al alloy
Martensitic transformation
Shape memory effect

Cite this

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title = "Influence of quenching temperature on martensitic transformation and magnetism of Co40.5Ni34Al25.5 alloy",

abstract = "The relationship of martensitic transformation and magnetism to quenching temperature was investigated for Co40.5Ni34Al25.5 alloy by optical micrography, DSC and VSM methods. Its shape memory effects were measured by three-point bending tests. It is found that the martensitic transformation temperatures and Curie points of Co40.5Ni34Al25.5 alloy are proportional to the quenching temperatures. The martensitic transformation temperatures, Ms, Mf, As and Af, changed almost to be parallel with the quenching temperature, and increased by 8°C~9°C when the quenching temperature elevated for 10°C due to the decreasing of Al concentration in the β phase. The flexural strength was 450 MPa for Co40.5Ni34Al25.5 alloy quenched from 1320°C. It is indicated by bending test that the Co40.5Ni34Al25.5 alloy has a good shape memory effect of double directions.",

keywords = "Co-Ni-Al alloy, Martensitic transformation, Shape memory effect",

author = "Fenghua Luo and Jiaya Chen and Yuqiang Tao and Katsunari Oikawa and Kiyohito Ishida",

year = "2006",

month = jun,

language = "English",

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journal = "Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering",

issn = "1002-185X",

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TY - JOUR

T1 - Influence of quenching temperature on martensitic transformation and magnetism of Co40.5Ni34Al25.5 alloy

AU - Luo, Fenghua

AU - Chen, Jiaya

AU - Tao, Yuqiang

AU - Oikawa, Katsunari

AU - Ishida, Kiyohito

PY - 2006/6

Y1 - 2006/6

N2 - The relationship of martensitic transformation and magnetism to quenching temperature was investigated for Co40.5Ni34Al25.5 alloy by optical micrography, DSC and VSM methods. Its shape memory effects were measured by three-point bending tests. It is found that the martensitic transformation temperatures and Curie points of Co40.5Ni34Al25.5 alloy are proportional to the quenching temperatures. The martensitic transformation temperatures, Ms, Mf, As and Af, changed almost to be parallel with the quenching temperature, and increased by 8°C~9°C when the quenching temperature elevated for 10°C due to the decreasing of Al concentration in the β phase. The flexural strength was 450 MPa for Co40.5Ni34Al25.5 alloy quenched from 1320°C. It is indicated by bending test that the Co40.5Ni34Al25.5 alloy has a good shape memory effect of double directions.

AB - The relationship of martensitic transformation and magnetism to quenching temperature was investigated for Co40.5Ni34Al25.5 alloy by optical micrography, DSC and VSM methods. Its shape memory effects were measured by three-point bending tests. It is found that the martensitic transformation temperatures and Curie points of Co40.5Ni34Al25.5 alloy are proportional to the quenching temperatures. The martensitic transformation temperatures, Ms, Mf, As and Af, changed almost to be parallel with the quenching temperature, and increased by 8°C~9°C when the quenching temperature elevated for 10°C due to the decreasing of Al concentration in the β phase. The flexural strength was 450 MPa for Co40.5Ni34Al25.5 alloy quenched from 1320°C. It is indicated by bending test that the Co40.5Ni34Al25.5 alloy has a good shape memory effect of double directions.

KW - Co-Ni-Al alloy

KW - Martensitic transformation

KW - Shape memory effect

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SN - 1002-185X

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JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

IS - 6

ER -

Influence of quenching temperature on martensitic transformation and magnetism of Co_40.5Ni₃₄Al_25.5 alloy

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Keywords

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