Study of the non-linear stress-strain behavior in Ti-Nb-Zr alloys
Document title: Study of the non-linear stress-strain behavior in Ti-Nb-Zr alloys
Journal: Materials research
Database: PERIÓDICA
System number: 000312839
ISSN: 1516-1439
Authors: 1

2
Institutions: 1Faculdade de Engenharia Quimica de Lorena, Lorena, Sao Paulo. Brasil
2Instituto Tecnologico de Aeronautica, Sao Jose dos Campos, Sao Paulo. Brasil
Year:
Season: Oct-Dic
Volumen: 8
Number: 4
Pages: 435-438
Country: Brasil
Language: Inglés
Document type: Nota breve o noticia
Approach: Experimental
English abstract The aim of this work is to study the elastic behavior of some Ti-Nb-Zr alloys (Ti-8Nb-13Zr, Ti-13Nb-13Zr, Ti-18Nb-13Zr and Ti-41.1Nb-7.1Zr) developed to biomedical applications. These alloys were produced by arc melting under argon atmosphere. Uniaxial tensile tests, carried out in a MST servo-hydraulic machine, were employed in their mechanical characterization. The occurrence of non-linear stress-strain behavior in the conventional elastic region (total strain values up to 0.2%) lead to the Ramberg-Osgood relationship, modified by Hill, in order to analyze that portion of the obtained curves. The present study involves the following properties: initial elastic modulus, tangent modulus, secant modulus, proof stress and the Ramberg-Osgood parameter (n). The results demonstrate that these alloys are not similar with respect to the mechanical behavior. Furthermore, it is shown that the degree of non-linearity in the stress-strain behavior is quantified by the parameter (n)
Disciplines: Ingeniería,
Física y astronomía
Keyword: Ingeniería mecánica,
Ingeniería metalúrgica,
Mecánica, elasticidad y reología,
Aleaciones,
Titanio,
Niobio,
Circonio,
Propiedades mecánicas,
Deformación
Keyword: Engineering,
Physics and astronomy,
Mechanical engineering,
Metallurgical engineering,
Mechanics, elasticity and rheology,
Alloys,
Titanium,
Niobium,
Zirconia,
Mechanical properties,
Deformation
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