Structure and mechanical properties of Ti-Based alloys containing Ag subjected to a thermomechanical treatment

Zadorozhnyy, V.Yu.; Kopylov, A.N.; Горшенков, М.В.; Шабанова, Е. В.; Zadorozhnyy, M.Yu.; Новиков, А. В.; Maksimkin, Aleksey V.; Wada, Takeshi; Louzguine-Luzgin, Dmitri V.; Kato, Hidemi

doi:10.1016/j.jallcom.2018.12.152

Cited by 5 publications

(6 citation statements)

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“…The addition of nitrogen leads to electron localization, consequently reducing the distance and the size of the unit cell. This phenomenon has been well established in our previous report for the Ti 93.4 Pd 2.95 Ag 2.95 N 0.7 alloy exhibiting a relatively low elastic modulus of ≈65 GPa [24]. Moreover, incorporation of tin (Sn) during alloying can also aid in decreasing the elastic modulus in Ti-based alloys.…”

Section: Introductionsupporting

confidence: 77%

“…It is observed that in some cases, that Fe plays the role of ω-phase stabilization element which embrittles Ti-based alloy samples [53,54]. Besides, in our previous research on Ti-based alloys containing Fe, which exhibited brittleness during tensile tests [24,36], the formation of the ω phase was clearly detected (by TEM and XRD). Therefore, finding the combination of the alloying elements that can partially or completely suppress the formation of ω phase is highly desirable.…”

Section: Resultsmentioning

confidence: 85%

“…Dual-axial forging was carried out based on our previous studies [24,[31][32][33][34][35][36][37][38] and Ti-Fe-Cu-Sn phase diagrams. In brief, the initial forging procedure was carried out along the long axis with 15 cycles of ingot rotation at a constant temperature of 900 • C, which corresponds to β-Ti region.…”

Section: Dual-axial Forging Procedures and Mechanical Testingmentioning

confidence: 99%

“…The tensile strength of the alloys showed further improvement after dual-axial forging, but at the cost of plastic strain (Figure 1e and Table 1). Hence, due to the relatively insufficient influence of dual-axial forging on tensile plasticity, single rolling operation at low temperature (750 • C) was attempted, as in our previous work [24]. Contrary to the results obtained from dual-axial forging, the low-temperature rolling operation led to an increase in tensile strength (σ uts ≈ 1300 MPa) and in yield strength (σ 0.2 ≈ 1050 MPa), while it retained tensile plasticity of ≈6% (Figure 1e and Table 1).…”

Section: Alloymentioning

confidence: 99%

“…Interchanging Fe and Cu with Pd and Ag enhanced the biocompatibility, with a slight effect on the mechanical properties [35][36][37]. Among them, Ti 94 Ag 3 Pd 3 outperformed all the other alloys, exhibiting an optimum combination of physical and biocompatibility owing to the presence of Ag as an antibacterial agent [24,38].…”

Section: Introductionmentioning

confidence: 99%

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Novel α + β Type Ti-Fe-Cu Alloys Containing Sn with Pertinent Mechanical Properties

Zadorozhnyy

Ketov

Wada

et al. 2019

Metals

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Rising demand for bone implants has led to the focus on future alternatives of alloys with better biocompatibility and mechanical strength. Thus, this research is dedicated to the synthesis and investigation of new compositions for low-alloyed Ti-based compounds, which conjoin relatively acceptable mechanical properties and low elastic moduli. In this regard, the structural and mechanical properties of α + β Ti-Fe-Cu-Sn alloys are described in the present paper. The alloys were fabricated by arc-melting and tilt-casting techniques which followed subsequent thermo-mechanical treatment aided by dual-axial forging and rolling procedures. The effect of the concentrations of the alloying elements, and other parameters, such as regimes of rolling and dual-axial forging operation, on the microstructure and mechanical properties were thoroughly investigated. The Ti94Fe1Cu1Sn4 alloy with the most promising mechanical properties was subjected to thermo-mechanical treatment. After a single rolling procedure at 750 °C, the alloy exhibited tensile strength and tensile plasticity of 1300 MPa and 6%, respectively, with an elastic modulus of 70 GPa. Such good tensile mechanical properties are explained by the optimal volume fraction balance between α and β phases and the texture alignment obtained, providing superior alternatives in comparison to pure α- titanium alloys.

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Section: Introductionsupporting

confidence: 77%