ISSN 2594-5327
59º Congresso anual — Vol. 59 , num. 1 (2004)
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Titanium alloys have several advantages over ferrous and non-ferrous metallic materials, such as high strength-to-weight ratio and excellent corrosion resistance. A blended elemental titanium powder metallurgy process has been developed to offer low cost commercial products. The process employs hydride-dehydride (HDH) powders as raw material. In this work, results of the Ti-35Nb alloy sintering are presented. This alloy due to its lower modulus of elasticity and high biocompatibility is a promising candidate for aerospace and medical use. Samples were produced by mixing of initial metallic powders followed by uniaxial and cold isostatic pressing with subsequent densification by sintering between 900 up to 1600 ºC, in vacuum. Sintering behavior was studied by means of dilatometry and density. Sintered samples were characterized for phase composition, microstructure and microhardness by X-ray diffraction, scanning electron microscopy and Vickers indentation, respectively. It was shown that the samples were sintered to high densities and presented homogeneous microstructure from the elements dissolution with low interstitial pick-up.
Titanium alloys have several advantages over ferrous and non-ferrous metallic materials, such as high strength-to-weight ratio and excellent corrosion resistance. A blended elemental titanium powder metallurgy process has been developed to offer low cost commercial products. The process employs hydride-dehydride (HDH) powders as raw material. In this work, results of the Ti-35Nb alloy sintering are presented. This alloy due to its lower modulus of elasticity and high biocompatibility is a promising candidate for aerospace and medical use. Samples were produced by mixing of initial metallic powders followed by uniaxial and cold isostatic pressing with subsequent densification by sintering between 900 up to 1600 ºC, in vacuum. Sintering behavior was studied by means of dilatometry and density. Sintered samples were characterized for phase composition, microstructure and microhardness by X-ray diffraction, scanning electron microscopy and Vickers indentation, respectively. It was shown that the samples were sintered to high densities and presented homogeneous microstructure from the elements dissolution with low interstitial pick-up.
Palavras-chave
powder metallurgy, titanium alloys, modulus of elasticity, near-net-shape.
powder metallurgy, titanium alloys, modulus of elasticity, near-net-shape.
Como citar
Santos, Dalcy Roberto dos; Henriques, Vinicius André Rodrigues; Cairo, Carlos Alberto Alves; Pereira, Marcelo dos Santos.
PRODUCTION OF A LOW YOUNG MODULUS TITANIUM ALLOY BY POWDER METALLURGY,
p. 2241-2247.
In: 59º Congresso anual,
São Paulo, Brasil,
2004.
ISSN: 2594-5327, DOI 10.5151/2594-5327-3974
