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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

The Influence of Sintering Parameters in the Microstructure and Mechanical Properties of a Cu-Al-Ni-Mn-Zr Shape Memory Alloy

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Gera, Dennis B. [1] ; Soyama, Juliano [2] ; Cava, Regis D. [3] ; Spinelli, Jose E. [1] ; Kiminami, Claudio S. [1]
Total Authors: 5
[1] Univ Fed Sao Carlos UFSCar, Dept Engn Mat DEMa, BR-13565905 Sao Carlos, SP - Brazil
[2] Univ Fed ABC UFABC, Ctr Engn Modelagem Ciencias Sociais Aplicadas CEC, BR-09210580 Sao Paulo - Brazil
[3] Univ Oeste Joinville Univille, Programa Posgrad Engn Proc, BR-89219710 Joinville - Brazil
Total Affiliations: 3
Document type: Journal article
Web of Science Citations: 4

Shape memory alloys from the Cu-Al-Ni system arouse interest for industrial applications due to their high thermal stability and low cost. In this study, the Cu-11.8Al-3.2Ni-3Mn-0.5Zr alloy is prepared through a powder metallurgy processing technique. Specimens are produced by a conventional uniaxial press followed by sintering procedure under argon atmosphere. The sintering temperature is varied in the range from 950 to 1060 degrees C, whereas sintering time is varied from 0.5 to 2h. The results denote that a temperature close to the alloy's solidus temperature is necessary to achieve higher densities. Moreover, martensite-type microstructures are observed, despite the slow cooling rate applied after sintering. The compression strengths are in the order of 500MPa with the exception of the specimens sintered for 1.5h, which reaches an average of 700MPa. This is explained by the lower porosity resulting from liquid phase sintering. The forward and reverse martensitic transformation temperatures, however, are quite similar for all examined conditions. (AU)

FAPESP's process: 13/05987-8 - Processing and characterization of amorphous, metastable and nano-structured metallic alloys
Grantee:Claudio Shyinti Kiminami
Support type: Research Projects - Thematic Grants
FAPESP's process: 16/00583-4 - Processing of Cu-11.8Al-3.2Ni-3Mn-0,5Zr shape memory alloy by powder metallurgy
Grantee:Dennis Balbino Gera
Support type: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 14/13037-2 - Multi-User Equipment approved in grant 2013/05987-8: gas atomizer for 3kg steel in inert atmosphere with melting by induction
Grantee:Claudio Shyinti Kiminami
Support type: Multi-user Equipment Program