Shape memory properties and microstructural evolution of rapidly solidified CuAlBe alloys

In this work, the effects of Be addition on the microstructure and phase transformation temperatures of Cu-12Al-xBe (x = 0.4, 0.5 and 0.6 wt.%) shape memory alloys fabricated by using the arc-melting and melt-spinning techniques have been investigated. X-ray diffraction analysis revealed that the arc-melted alloys consisted of austenitic ß1, martensitic ß1' and ?2 precipitate phases, whereas melt-spun ribbons were composed of a fully martensitic phase. The average grain size of martensitic phases in melt-spun ribbons was determined by electron microscopy images, showing a decrease with increasing Beryllium (Be) amount. Moreover, it was found that the Be addition in the arc-melted alloys had a distinct effect on the morphology of the ?2 precipitate phase. Transmission electron microscopy analysis showed that the thickness of martensitic plates in the melt-spun ribbons reduced with increasing Be addition. In a differential scanning calorimeter analysis, no martensitic transformation (Ms) peak was observed in arc-melted alloys, but it was clearly detected in melt-spun ribbons, in which Ms decreased dramatically with increasing Be addition. The improvement in the shape memory ability of melt-spun ribbons was explained in terms of the refinement in grain size and martensitic plates. © 2013 Elsevier Inc.

Yazar Ergen S.
Uzun O.
Yilmaz F.
Kiliçaslan M.F.
Yayın Türü Article
Tek Biçim Adres https://hdl.handle.net/20.500.12628/7518
Tek Biçim Adres 10.1016/j.matchar.2013.03.010
Konu Başlıkları Be-addition
Martensitic transformation
Melt-spinning
Shape memory alloys
Koleksiyonlar Araştırma Çıktıları | WoS | Scopus | TR-Dizin | PubMed | SOBİAD
Scopus İndeksli Yayınlar Koleksiyonu
WoS İndeksli Yayınlar Koleksiyonu
Dergi Adı Materials Characterization
Dergi Cilt Bilgisi 80
Sayfalar 92 - 97
Yayın Yılı 2013
Eser Adı
[dc.title]
Shape memory properties and microstructural evolution of rapidly solidified CuAlBe alloys
Yazar
[dc.contributor.author]
Ergen S.
Yazar
[dc.contributor.author]
Uzun O.
Yazar
[dc.contributor.author]
Yilmaz F.
Yazar
[dc.contributor.author]
Kiliçaslan M.F.
Yayın Yılı
[dc.date.issued]
2013
Yayın Türü
[dc.type]
article
Özet
[dc.description.abstract]
In this work, the effects of Be addition on the microstructure and phase transformation temperatures of Cu-12Al-xBe (x = 0.4, 0.5 and 0.6 wt.%) shape memory alloys fabricated by using the arc-melting and melt-spinning techniques have been investigated. X-ray diffraction analysis revealed that the arc-melted alloys consisted of austenitic ß1, martensitic ß1' and ?2 precipitate phases, whereas melt-spun ribbons were composed of a fully martensitic phase. The average grain size of martensitic phases in melt-spun ribbons was determined by electron microscopy images, showing a decrease with increasing Beryllium (Be) amount. Moreover, it was found that the Be addition in the arc-melted alloys had a distinct effect on the morphology of the ?2 precipitate phase. Transmission electron microscopy analysis showed that the thickness of martensitic plates in the melt-spun ribbons reduced with increasing Be addition. In a differential scanning calorimeter analysis, no martensitic transformation (Ms) peak was observed in arc-melted alloys, but it was clearly detected in melt-spun ribbons, in which Ms decreased dramatically with increasing Be addition. The improvement in the shape memory ability of melt-spun ribbons was explained in terms of the refinement in grain size and martensitic plates. © 2013 Elsevier Inc.
Kayıt Giriş Tarihi
[dc.date.accessioned]
2019-12-23
Açık Erişim Tarihi
[dc.date.available]
2019-12-23
Yayın Dili
[dc.language.iso]
eng
Konu Başlıkları
[dc.subject]
Be-addition
Konu Başlıkları
[dc.subject]
Martensitic transformation
Konu Başlıkları
[dc.subject]
Melt-spinning
Konu Başlıkları
[dc.subject]
Shape memory alloys
Haklar
[dc.rights]
info:eu-repo/semantics/closedAccess
ISSN
[dc.identifier.issn]
1044-5803
Sponsor YAYINCI
[dc.description.sponsorship]
Firat University Scientific Research Projects Management Unit: 2009/54
Sponsor YAYINCI
[dc.description.sponsorship]
This work is supported by the Tokat Gaziosmanpasa University Scientific Research Project Unit (BAPB) under project no: 2009/54 .
İlk Sayfa Sayısı
[dc.identifier.startpage]
92
Son Sayfa Sayısı
[dc.identifier.endpage]
97
Dergi Adı
[dc.relation.journal]
Materials Characterization
Dergi Cilt Bilgisi
[dc.identifier.volume]
80
Tek Biçim Adres
[dc.identifier.uri]
https://dx.doi.org/10.1016/j.matchar.2013.03.010
Tek Biçim Adres
[dc.identifier.uri]
https://hdl.handle.net/20.500.12628/7518
Görüntülenme Sayısı ( Şehir )
Görüntülenme Sayısı ( Ülke )
Görüntülenme Sayısı ( Zaman Dağılımı )
Görüntülenme
7
09.12.2022 tarihinden bu yana
İndirme
1
09.12.2022 tarihinden bu yana
Son Erişim Tarihi
24 Şubat 2024 23:24
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Tıklayınız
martensitic melt-spun ribbons alloys addition arc-melted increasing analysis electron phases precipitate plates microscopy transformation memory techniques calorimeter scanning differential reduced thickness showed Transmission morphology effect distinct observed explained Elsevier refinement ability effects improvement dramatically decreased
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