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Effect of the Metallic Aging on the Microstructure and Mechanical Properties of Titanium Alloy

Published online by Cambridge University Press:  04 September 2017

T.J. Sánchez-Rosas ,
J.D. Muñoz-Andrade ,
M. Aguilar-Sánchez ,
B. Vargas-Arista  and
E. Garfias-García
T.J. Sánchez-Rosas*
Affiliation:
Universidad Autónoma Metropolitana Unidad -Azcapotzalco. Av. San Pablo No. 180. Col. Reynosa Tamaulipas México Distrito Federal, C.P. 02200.
J.D. Muñoz-Andrade
Affiliation:
Universidad Autónoma Metropolitana Unidad -Azcapotzalco. Av. San Pablo No. 180. Col. Reynosa Tamaulipas México Distrito Federal, C.P. 02200.
M. Aguilar-Sánchez
Affiliation:
Universidad Autónoma Metropolitana Unidad -Azcapotzalco. Av. San Pablo No. 180. Col. Reynosa Tamaulipas México Distrito Federal, C.P. 02200.
B. Vargas-Arista
Affiliation:
Instituto Tecnológico de Tlalnepantla. División de Estudios de Posgrado e Investigación. Av. Instituto Tecnológico s/n. Col. La comunidad. Tlalnepantla de Baz Estado de México, C.P. 54070.
E. Garfias-García
Affiliation:
Universidad Autónoma Metropolitana Unidad -Azcapotzalco. Av. San Pablo No. 180. Col. Reynosa Tamaulipas México Distrito Federal, C.P. 02200.
*
*Email: [email protected]
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Abstract

Different aging heat treatments were performed in a Titanium alloy using as aging media metallic baths in comparison to typical furnace aging. As a first step, a Duplex Aging (DA) consisted of solubilization followed by quenching to room temperature after aging heat treatment in different metallic baths (Zn, Sn and Bi). A second procedure was Alternative Aging (AA) which consisted of solubilization and direct aging inside three different aforementioned baths. Microstructural aging variations begins at half hour until 30 h at 550°C inside metallic bath of Zn, Sn or Bi. Both kinds of aging promoted a microstructural variation and so on microhardness values. Microstructural analysis by Optical Microscopy showed a structural refinement after AA treatment. The highest hardness value of 375 HVN was achieved in Alternative Aging with Zn bath, which was found to be dependent on laminar α phase refining. Moreover, after AA treatment for 0.5, 1, 2, 3, 4, 10 and 30 h at 550°C in the metallic bath of Zn and Sn, the results indicated similar hardness values in different times, resulting in the fastest kinetic for Sn metallic bath at 2 h compared to that 4 h in Zn metallic bath. The observed increase in micro-hardness is not very attractive, it is recommended to use large aging times in order to stabilize final spacing of microstructural features in AA treatment.

Keywords

MetalTiMicrostructure
Type
Articles
Information
MRS Advances , Volume 2 , Issue 50: International Materials Research Congress XXV , 2017 , pp. 2837 - 2845
Copyright
Copyright © Materials Research Society 2017 

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