Microstructure and mechanical properties of gas tungsten arc welded Cu-Al-Mn shape memory alloy rods

J. P. Oliveira; B. Crispim; Z. Zeng; T. Omori; F. M. Braz Fernandes; R. M. Miranda

doi:10.1016/j.jmatprotec.2019.03.020

Microstructure and mechanical properties of gas tungsten arc welded Cu-Al-Mn shape memory alloy rods

J. P. Oliveira, B. Crispim, Z. Zeng, T. Omori, F. M. Braz Fernandes, R. M. Miranda

ENG - Metallurgy

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

19 Citations (Scopus)

Abstract

Large diameter rods of Cu-Al-Mn shape memory alloy were gas tungsten arc welded. The microstructural evolution was studied by electron microscopy techniques and its impact on the mechanical and functional response of the welded joints was assessed. The fusion zone exhibited a mixture of α and β phases, while the base material was composed only by the parent β phase. The refined grain structure of the fusion zone increased the material ductility and can improve the functional fatigue resistance of the welded joint when compared to the original base material.

Original language	English
Pages (from-to)	93-100
Number of pages	8
Journal	Journal of Materials Processing Technology
Volume	271
DOIs	https://doi.org/10.1016/j.jmatprotec.2019.03.020
Publication status	Published - 2019 Sep

Keywords

Characterization
Functional fatigue
Phase transformations
Shape memory alloys
Superelasticity
Welding

ASJC Scopus subject areas

Ceramics and Composites
Computer Science Applications
Metals and Alloys
Industrial and Manufacturing Engineering

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title = "Microstructure and mechanical properties of gas tungsten arc welded Cu-Al-Mn shape memory alloy rods",

abstract = "Large diameter rods of Cu-Al-Mn shape memory alloy were gas tungsten arc welded. The microstructural evolution was studied by electron microscopy techniques and its impact on the mechanical and functional response of the welded joints was assessed. The fusion zone exhibited a mixture of α and β phases, while the base material was composed only by the parent β phase. The refined grain structure of the fusion zone increased the material ductility and can improve the functional fatigue resistance of the welded joint when compared to the original base material.",

keywords = "Characterization, Functional fatigue, Phase transformations, Shape memory alloys, Superelasticity, Welding",

author = "Oliveira, {J. P.} and B. Crispim and Z. Zeng and T. Omori and {Braz Fernandes}, {F. M.} and Miranda, {R. M.}",

note = "Funding Information: JPO, BC and RMM acknowledge Funda{\c c}{\~a}o para a Ci{\^e}ncia e a Tecnologia (FCT - MCTES) for the financial support of UNIDEMI via the project UID/EMS/00667/2019. FMBF acknowledges funding of CENIMAT by FEDER through the program COMPETE 2020 and National Funds through FCT-Portuguese Foundation for Science and Technology, under the project UID/CTM/50025/2013. ZZ acknowledges the National Natural Science Foundation of China (Grant No. 51775091 ) and the Science and Technology Planning Project of Sichuan Province (Grant No. 2018GZ0284 ).",

year = "2019",

month = sep,

doi = "10.1016/j.jmatprotec.2019.03.020",

language = "English",

volume = "271",

pages = "93--100",

journal = "Journal of Materials Processing Technology",

issn = "0924-0136",

publisher = "Elsevier BV",

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TY - JOUR

T1 - Microstructure and mechanical properties of gas tungsten arc welded Cu-Al-Mn shape memory alloy rods

AU - Oliveira, J. P.

AU - Crispim, B.

AU - Zeng, Z.

AU - Omori, T.

AU - Braz Fernandes, F. M.

AU - Miranda, R. M.

N1 - Funding Information: JPO, BC and RMM acknowledge Fundação para a Ciência e a Tecnologia (FCT - MCTES) for the financial support of UNIDEMI via the project UID/EMS/00667/2019. FMBF acknowledges funding of CENIMAT by FEDER through the program COMPETE 2020 and National Funds through FCT-Portuguese Foundation for Science and Technology, under the project UID/CTM/50025/2013. ZZ acknowledges the National Natural Science Foundation of China (Grant No. 51775091 ) and the Science and Technology Planning Project of Sichuan Province (Grant No. 2018GZ0284 ).

PY - 2019/9

Y1 - 2019/9

N2 - Large diameter rods of Cu-Al-Mn shape memory alloy were gas tungsten arc welded. The microstructural evolution was studied by electron microscopy techniques and its impact on the mechanical and functional response of the welded joints was assessed. The fusion zone exhibited a mixture of α and β phases, while the base material was composed only by the parent β phase. The refined grain structure of the fusion zone increased the material ductility and can improve the functional fatigue resistance of the welded joint when compared to the original base material.

AB - Large diameter rods of Cu-Al-Mn shape memory alloy were gas tungsten arc welded. The microstructural evolution was studied by electron microscopy techniques and its impact on the mechanical and functional response of the welded joints was assessed. The fusion zone exhibited a mixture of α and β phases, while the base material was composed only by the parent β phase. The refined grain structure of the fusion zone increased the material ductility and can improve the functional fatigue resistance of the welded joint when compared to the original base material.

KW - Characterization

KW - Functional fatigue

KW - Phase transformations

KW - Shape memory alloys

KW - Superelasticity

KW - Welding

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