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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.)

High Cooling Rate, Regular and Plate Like Cells in Sn-Ni Solder Alloys

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Author(s):
Xavier, Marcella G. C. [1] ; Silva, Bismarck L. [2] ; Garcia, Amauri [3] ; Spinelli, Jose E. [1]
Total Authors: 4
Affiliation:
[1] Univ Fed Sao Carlos UFSCar, Dept Mat Engn, BR-13565905 Sao Carlos, SP - Brazil
[2] Fed Univ Rio Grande Norte UFRN, Dept Mat Engn, BR-59078970 Natal, RN - Brazil
[3] Univ Campinas UNICAMP, Dept Mfg & Mat Engn, BR-13083860 Campinas, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: ADVANCED ENGINEERING MATERIALS; v. 20, n. 7 JUL 2018.
Web of Science Citations: 0
Abstract

Broad ranges of cooling rates (T) 0.8-30.5 and 0.4-5.0Ks(-1) are attained during directional solidification of eutectic Sn-0.2wt% Ni and hypereutectic Sn-0.5wt% Ni alloys, respectively. A reverse high cooling rate cell-to-dendrite transition occurs for the eutectic composition and a transition from high cooling rate cells to plate like cells for the hypereutectic alloy. High cooling rate -Sn cells are associated with cooling rates >5.5 and >2.7Ks(-1) for eutectic and hypereutectic compositions, respectively. A processing diagram, relating the -Ni content' space with the microstructural morphology, is proposed. A combination of plate like cells and plate NiSn4 eutectic phase results in higher ductility. (AU)

FAPESP's process: 17/15158-0 - Characterization of microstructure and properties in the evaluation of alloys for thermal interface contact
Grantee:Amauri Garcia
Support Opportunities: Regular Research Grants
FAPESP's process: 15/11863-5 - Microstructure evaluation of ternary Al-Si-Cu, Sn-Bi-Sb and Zn-Sn-Cu and its correlations with mechanical properties
Grantee:José Eduardo Spinelli
Support Opportunities: Regular Research Grants
FAPESP's process: 16/10596-6 - Impulse Atomization of Sn-Zn and Al-Si alloys: correlations between microstructures/morphologies and processing parameters
Grantee:José Eduardo Spinelli
Support Opportunities: Scholarships abroad - Research
FAPESP's process: 16/18186-1 - Microstructural evolution and mechanical and wear resistances of ternary Al-Bi-Si and Al-Bi-Ni alloys unidirectionally solidified
Grantee:José Marcelino da Silva Dias Filho
Support Opportunities: Scholarships in Brazil - Post-Doctoral