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Title: Experimental Investigation on Mechanical Properties of Titanium Alloy Bars: Comparison with High-Strength Steel

Author(s): Ruchin Khadka, Mustafa Mashal, and Jared Cantrell

Publication: Symposium Paper

Volume: 341


Appears on pages(s): 160-187

Keywords: analytical stress-strain relationship; Brinell hardness test; Charpy V-Notch impact test; galling test; high-strength steel; mechanical properties; novel materials; tension test; titanium alloy bars

DOI: 10.14359/51727029

Date: 6/30/2020

Recently titanium alloy bars (TiABs) have been gaining popularity in civil engineering applications. They offer good deformation capacity, better fatigue performance, high-strength-to-weight ratio, lighter weight (60% that of steel), and excellent corrosion resistance. Recently, TiABs were used in the strengthening of two bridges in Oregon to increase the shear and flexural capacities of the concrete beams. The research in this paper quantifies some common mechanical properties of TiABs using experimental investigation. This is done to explore suitability of the material for wider applications in civil infrastructure. The four types of testing conducted in accordance with ASTM standards included tension, hardness, Charpy V-Notch, and galling tests. Samples of 150 ksi (1034 MPa) high strength steel were also tested for comparison. Test results showed good performance of TiABs. Analytical models are proposed for stress-strain and toughness-temperature relationships.