| Full text | |
| Author(s): |
da Silva, Murillo R.
[1, 2]
;
Gargarella, Piter
[3, 1]
;
Plaine, Athos H.
[4]
;
Contieri, Rodrigo J.
[5]
;
Pauly, Simon
[6]
;
Kuehn, Uta
[2]
;
Bolfarini, Claudemiro
[3, 1]
Total Authors: 7
|
| Affiliation: | [1] Univ Fed Sao Carlos, Grad Program Mat Sci & Engn, BR-13565905 Sao Carlos, SP - Brazil
[2] IFW Dresden, Inst Complex Mat, D-01069 Dresden - Germany
[3] Univ Fed Sao Carlos, Dept Mat Engn, BR-13565905 Sao Carlos, SP - Brazil
[4] State Univ Santa Catarina UDESC, Dept Mech Engn, BR-89223100 Joinville, SC - Brazil
[5] Univ Estadual Campinas, Sch Appl Sci, UNICAMP, BR-13083970 Campinas, SP - Brazil
[6] Univ Appl Sci Aschaffenburg, Fac Engn, D-63743 Aschaffenburg - Germany
Total Affiliations: 6
|
| Document type: | Journal article |
| Source: | Journal of Materials Research; v. 35, n. 14, p. 1777-1789, JUL 28 2020. |
| Web of Science Citations: | 0 |
| Abstract | |
In this work, a Ti-29Nb-13Ta-4.6Zr-xO Gum Metal with two significantly different oxygen levels (388 and 3570 ppm) was investigated during deformation. The alloys were compressed during in situ high-energy X-ray diffraction using three different strain rates, 10(-4), 10(-3), and 10(-1) s(-1), in order to evaluate their influence on phase stability and mechanical properties. The influence of oxygen on the deformation process was also studied. Deformation takes place by twinning, stress-induced, and reverse martensitic transformation and was observed, for some samples, a spinodal decomposition of the beta-phase during elastic deformation. The mechanical properties were similar for the different rates employed when considering the same oxygen level. The alloy with a higher amount of oxygen, however, showed a substantial increase in mechanical strength, with a yield strength of around 680 MPa, which is more than three times higher than for the specimen with 388 ppm of oxygen. (AU) | |
| FAPESP's process: | 13/05987-8 - Processing and characterization of amorphous, metastable and nano-structured metallic alloys |
| Grantee: | Claudio Shyinti Kiminami |
| Support Opportunities: | Research Projects - Thematic Grants |