Tensile Deformation Behavior of Ultrasonically Consolidated Laminated Ti-Al Composites at Warm Forming Temperatures

Year 2018, Volume: 14 Issue: 4, 479 - 483, 28.12.2018

İrfan Kaya

https://doi.org/10.18466/cbayarfbe.464135

Abstract

The objective
of the present study is to characterize the mechanical behavior of laminated
metal composites (LMCs) that consist of commercially pure titanium and 1100
aluminum layers which were ultrasonically consolidated.  Ultrasonic consolidation is a low temperature
process used to fabricate layered solid metal structures. Tensile tests of
Ti-Al laminated composites (in 3, 5, and 7 bilayer configurations) were
performed at four various temperatures (25 ºC, 100 ºC, 200 ºC, and 300 ºC)
using strain rate of 0.017 /s. The effect of temperature, sonotrode travel direction,
and number of layers on the material behavior were discussed on the basis of
uniaxial tensile test results. The ultimate tensile strength and yield strength
is found to decrease with increasing temperature. In general, high strain
values were obtained in Y samples compared to X samples. The maximum strain
value was 0.42 at 300 °C temperature in the 5 bilayer Y sample.

Keywords

Laminated metal composites, ultrasonic consolidation, Ti-Al composites, ultrasonic welding, mechanical characterization, warm forming

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