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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.)

Observations on the compression properties of semisolid Ti-Cu alloys

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Author(s):
Campo, Kaio Niitsu [1] ; de Freitas, Caio Chausse [1] ; de Lima, Dalton Daniel [1] ; Caram, Rubens [1]
Total Authors: 4
Affiliation:
[1] Univ Estadual Campinas, Sch Mech Engn, Campinas, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T; v. 9, n. 6, p. 15802-15810, NOV-DEC 2020.
Web of Science Citations: 0
Abstract

Ti-Cu alloys are considered viable candidates for thixoforming (semisolid processing) due to their solid-to-liquid transitions and good microstructural properties. In the present study, the deformation behavior of these alloys in the semisolid state has been investigated by performing hot compression tests on Ti-(25, 27, 29)Cu samples isothermally treated at 1035 degrees C for 300 s. In general, relatively low loads were applied to deform samples with globular microstructure, which decreased with increasing liquid fraction (Cu content). In contrast, dendritic samples required much higher loads; the resulting materials were significantly more heterogeneous and contained large numbers of microstructural defects. At applied compression velocities of 4, 8, and 16 mm s(-1), the strain rate had little effect on the response of the globular material; however, longer isothermal heat treatments significantly reduced the compression load due to globularization enhancement. The obtained results suggest potential applicability of Ti-Cu alloys for semisolid processing. (C) 2020 The Author(s). Published by Elsevier B.V. (AU)

FAPESP's process: 13/24786-3 - Thixoforming of titanium alloys: application to Ti-Cu, Ti-Fe and Ti-Co systems
Grantee:Kaio Niitsu Campo
Support type: Scholarships in Brazil - Doctorate